Home Help Centre - FAQs

Help Centre - Frequently Asked Questions

  • What does KORGEN do and when was the company started?
  • Where does KORGEN sell?
  • What are the products sold by KORGEN?
  • What are the services offered by Korgen?
  • How does KORGEN sell and service its products?
  • What are the advantages of buying from KORGEN?
  • Do I need to have a Registered User Account to use KORGEN website?
  • Do I need a password to use KORGEN website functionalities?
  • How do I buy products from KORGEN?
  • How do I book an Enquiry or Demo?
  • How do I place orders online with KORGEN?
  • How to register service requests with KORGEN?
  • How do I unsubscribe from the newsletters KORGEN sends to my email id?
  • What should I do if I don’t receive mails relating to my transactions with KORGEN?
  • What should I do if I am not able to use the features / functionalities on your site?
  • What supports does KORGEN provide before, during and after I place an order?
  • Whom should I contact for installation, after-sales service requirements and supply of spares?
  • Who provides trainings for the products supplied?
  • How do I get the final offer price from KORGEN?
  • Can I place orders for multiple products on the site?
  • Will there be any hidden charges when I place an order with you online?
  • Can I place my orders offline?
  • When will I receive my invoice for the ordered products?
  • How do I know that my order has been successfully placed and confirmed?
  • Can I order a product that is ‘Out of Stock’?
  • Why KORGEN canceled my order?
  • How do I track the status of my orders?
  • My transaction failed but the money was deducted from my account. What should I do?
  • What are the various payment options offered by KORGEN?
  • Cash Payments Are Not Accepted
  • How safe is it to use my credit card / debit card / bank details on KORGEN?
  • What are the payment options available against delivery of the ordered products?
  • Do I have the option to make part-payments?
  • How safe are my personal details shared with Korgen?
  • Is EMI option available for all the products sold by KORGEN?
  • What are your delivery charges?
  • What is the estimated delivery time when we place orders with KORGEN?
  • What is the process involved in the delivery of my ordered products?
  • When can I cancel an order?
  • How do I cancel my order?
  • What is Korgen’s Returns Policy?
  • In case I return the ordered products, should I also return the free gifts, if any, received along with the product?
  • How much time will it take to refund my payment in case of product returns?
  • What are the modes of refund?
  • How do I get in touch with KORGEN Customer Care?
  • I want to become a Business Associate with KORGEN. Whom should I get in touch with?
  • Why do I need a water purifier?
  • Is boiling water still a foolproof method?
  • What are the contaminants found in water today?
  • What are health issues caused by drinking impure water?
  • What are the metrics to check the content of these contaminants?
  • What are the major types of water purifiers available today?
  • How do I choose the right purifier?
  • Where do I test my water?
  • Can I test my water using portable kits?
  • Do water purifiers work without electricity?
  • Do water purifiers require regular maintenance?
  • Can I install a water purifier in open places (without shelter)?
  • What is the average life of RO Membranes?
  • How much time the purified water will remain pure?
  • What is the power consumption of home water purifiers that use electricity?
  • Can I use RO purifiers if the TDS is less than 500 ppm?
  • What are the uses of reject water from RO purifiers?
  • Is bottled water and other packaged drinking water (cans) safe for consumption?
  • What is the permissible quality of drinking water in terms of dissolved solids (TDS)?
  • What is water treatment?
  • Is water treatment different from water purification?
  • What are the general uses of water treatment?
  • What are the various types of contaminants found in water today?
  • What are the units of measurement used for contaminants in water?
  • How do I choose the right water treatment process/plant?
  • Does Korgen offer water testing services?
  • Do water treatment plants require regular servicing?
  • What are the operational difficulties in using a water treatment plant?
  • Where do I install my Water Treatment Plant and do these plants require shelter?
  • How do I remove colour and chlorine smell from my water?
  • My water is cloudy and turbid. What treatment is required to make it clear?
  • What is the process of softening hard water?
  • My water is smelling rust and appear in brown colour. What should I do?
  • Do you supply high volume plants for drinking water purification?
  • How do I disinfect my water?
  • We need distilled water for our industrial purposes?
  • What treatment plants are required to filter and reuse swimming pool water?
  • Does Korgen supply industrial grade water treatment plants?
  • What kind of automation options does Korgen provide?
  • What is sewage treatment?
  • What are the sources of sewage / wastewater?
  • What are the constituents / contaminants found in sewage?
  • What is the purpose of sewage treatment?
  • How treated sewage is reused?
  • What are the biological processes used in sewage treatment?
  • What are the biological processes used in sewage treatment?
  • What are the biological processes used in sewage treatment?
  • How to arrive at the right plant size for sewage treatment?
  • What does BOD and COD refer to?
  • What is the BOD / COD levels in raw sewage and what will be the reduction after treatment?
  • Like water analysis, can we do a sewage analysis before going in for treatment?
  • How many stages are there in sewage treatment?
  • What are the different methods by which growth of microorganisms is achieved?
  • Which is the best technology for treatment of sewage?
  • Do sewage treatment plants generate foul smell?
  • Where to install a sewage treatment plant and do these plants require shelter?
  • What are the difficulties sewage treatment plants face at the time of commissioning?
  • Do sewage treatment plants require regular servicing?
  • Do we need dedicated operators for sewage treatment plants?
  • What kind of automation options does KORGEN provide for STPs?
  • What is air purification?
  • What is the need for an air purifier?
  • What are the types of pollutants and impurities found in indoor air?
  • How does an air purifier work?
  • Who should use air purifiers?
  • Can air purifiers cure respiratory and other ailments caused by air pollution?
  • How much area can a portable air purifier cover?
  • Do air purifiers need electricity to work?
  • How to choose the right purifier?
  • At what frequency air purifiers need servicing?
  • What is the maintenance / running cost of an air purifier?
  • How loud are these air purifiers?
  • Can we use air purifiers continuously?
  • How do we assess the effectiveness of air purifiers?
  • Where and how should an air purifier be kept for maximum effectiveness?
  • Can I keep my windows open in a room where an air purifier is running?
  • What is a water pressure booster pump?
  • What are the causes of drop in water pressure?
  • How does a pressure booster pump work?
  • How to choose the right water pressure booster pump?
  • Do we need to have a pressure tank along with the booster pump?
  • Can we install pressure booster systems outdoor?
  • Can I change the pressure settings in a Pressure Booster Pump?
  • Why should I use solar power?
  • How do solar panels work?
  • Do solar panels produce power during rainy season and after sunset?
  • What can affect the quantum of solar energy received by the panels?
  • Is roof orientation a key factor?
  • Does a solar power system generate the same power output throughout the day?
  • Is solar power cheaper than grid power?
  • Can I install solar panels on my roof?
  • What are the other options to install solar panels?
  • Can I completely stop using grid power once I go in for solar panels?
  • What is the approximate life of solar power systems?
  • What are the types of Solar Power Systems?
  • What is an On-Grid Solar Power System?
  • What is net metering?
  • Do solar energy systems work during a blackout or shutdown?
  • Do solar energy systems work during a blackout or shutdown?
  • What are the major components used in a Solar Power System?
  • How do I choose the right solar module?
  • Can I add battery backup to an on-grid solar system?
  • What is the approximate price of your Rooftop Module?
  • Can I upgrade my solar system at a later date when my energy requirements increase?
  • What is the cost of installing a Solar Energy System?
  • Do I need to have a new switchboard and meter if I install a solar system?
  • What are the key advantages of using your Solar Power System?
  • What is the warranty offered for your Solar Power Systems?
  • What would be the annual maintenance and service costs for a Solar Power System?
  • How do I check the working efficiency of my Solar System?
  • What is the role of an inverter in solar power systems?
  • How important is the quality of the mounting structures for solar panels?
  • What are the precautions to be taken while installing a solar power system?
  • At what angle the solar panels need to be placed for maximum output?
  • How frequently the solar panels need to be cleaned?
  • How to go about the government approvals and subsidies for residential rooftop solar plants?
  • What is the normal payback period for a Solar Power System?
  • How much area is required to set up a grid connected rooftop solar system?

FAQs - General

About Korgen

Started in 2013, KORGEN is an ISO 9001:2015 certified environmental engineering company providing integrated solutions in product categories such as water purification, water treatment, sewage treatment, air purification, solar energy and pressure boosting pumps. Learn more

Our operations are presently confined to Chennai, Tamil Nadu and select cities across South India. While standard residential products are sold only in Chennai, we undertake WTP and STP projects across South India.

We plan to gradually expand our operations and establish a strong pan-India footprint by FY 2023-24.

KORGEN sells the following products to both consumers (B2C) and businesses (B2B). While the pre-engineered products are sourced from reputed brands, custom-built products are designed, sourced and assembled/manufactured by KORGEN. All KORGEN products use high-quality components and equipment from renowned global and national companies.

Pre-engineered Products
  • Home Water purifiers (RO & UV)
  • Domestic Water Filters & Softeners
  • Pressure Boosters
  • Modular Water Treatment Plants
  • Air Purifiers
  • Solar Inverters | Rooftop Units
Custom-Built Treatment Plants
  • Pressure Sand Filters
  • Multimedia Filters
  • Activated Carbon Filters
  • Iron Removers
  • Softening Plants
  • Reverse Osmosis Plants
  • DM / MB Plants
  • Chemical Dosing Systems
  • UV Disinfection Units
  • Pressure Booster Pumps
  • Ultrafiltration Plants
  • Micron Cartridge Filters
  • Swimming Pool Filters
  • Sewage Treatment Plants
  • Sullage Treatment Plants
  • Kitchen Effluent Treatment Plants
  • Commercial Air Purifiers
  • Solar Energy Products

KORGEN offers the following supports and services. Some are offered free of cost and others at very reasonable rates.

Free Services
  • Product Presentations | Demos
  • Need Analysis & Recommendations
  • Water Testing on select parameters
  • Holiday Service
Paid Services
  • Annual Service Contracts
  • Annual Maintenance Contracts
  • O&M Contracts | On-call Services
  • Lab Analysis of Water | Wastewater
  • Supply of spares and consumables
  • Refurbishment and Modernization
Product and Project-based Supports
  • Delivery and Installation
  • Design and Project Execution
  • Standard Warranty
  • Special Extended Warranty

For products of some of the third-party brands, these services are provided by the respective brands themselves.

We sell and service products through a combination of our own direct employees and associates. Both our employees and associates are well-trained, experienced in their respective fields and thoroughly screened by KORGEN prior to their induction.

At KORGEN, you can rest assured in terms of choosing the right solutions, stringent product quality and prompt after-sales service. It doesn’t stop there. Please visit us @ www.korgentech.com to know more about the advantages of dealing with us.

Usage and Subscription

Not at all. In fact, we have no concept of Registered Users.

With respect to pre-sales interactions, whether you want to book an enquiry-demo, test your water or place an order, all you need is just your mobile phone. For every interaction, we send an OTP to your mobile number to authenticate your interaction with us. And it’s done.

With regard to post-sales interactions, you only require the Customer ID issued by us to track your order status, book service requests, escalate unresolved issues and renew your service contracts. Of course, in some cases, an OTP-based authentication is carried out to avoid possible misuse.

No, as stated in the previous question, we authenticate transactions using OTPs sent to the user’s mobile number or through the Customer ID issued by us. We believe in making things easier for our customers.

It’s easy and simple. And we closely guide you at every stage of the process to help you make the right choices.

The first step is to book an enquiry with us, either online or over phone. Our specialist executives will take it forward from there. ie., meeting you in person at a place of your choice, assessing your requirements, carrying out site analysis and finally recommending products that exactly meet your needs.

With respect to placing orders, you can place it online and offline as well. Same for payments too.

  • Type the products that you are looking for using the Search Bar (last element in the Main Menu)
  • A search grid will appear showing the appropriate products based on your input
  • Click on the ‘Book an Enquiry or ‘Book an Demo’ link available there and your selection will be saved
  • You can continue to book enquiries or demos for multiple products
  • Once you finish the selection/s, click on the ‘Bookings’ icon provided on top of the Main Menu
  • The Booking cart will open. Click on the ‘Proceed to Confirm button
  • Fill in your details and submit
  • Enter the OTP sent to your mobile number in the given slot to authenticate yourself
  • On receipt of your submission, you will receive an auto-acknowledgement by mail and an SMS alert confirming your submission
  • Use the search bar to find the product of your choice
  • Click on your chosen product appearing on the search grid and go to the Product Page (or)
  • You can straight away click on the ‘Buy Now button placed under your chosen product
  • Now you will be taken to the cart
  • Enter the final price offered by the concerned Executive or our Associate along with his or her code and submit
  • Enter the OTP sent to the executives or associate’s mobile number (This is done to validate the final price offered by them) and place your order.
  • Check and confirm the order details in the next step (Final Order Summary)
  • Redeem your promo codes, if any.
  • Now choose your payment mode and make the payment
  • On receipt of your submission, you will receive an auto-acknowledgement by mail and an SMS alert confirming your submission
  • In case the final offer price is published in the website, then you can straightaway place your order without the OTP-based authentication process
  • You can choose to pay online using your credit/debit cards or internet banking You can also pay us by A/c payee cheque or direct NEFT Transfer Cash payments are now allowed and Korgen takes no responsibility for any cash payments made. Please go through our Terms of sale for details

Registering services requests with KORGEN can be done both online and offline.

Online - Visit our Service Request Registration Page, enter your Customer ID and your entire product/s details will appear. Choose the product you want to be serviced, enter specific details and submit. On receipt of your submission, you will receive an auto-acknowledgement by mail and an SMS alert confirming your submission

Offline - Call our customer care team @ +91 7299066660, share your Customer ID and requirements.

Good. Let us first see what our newsletters bring to you.

  • In-depth information and valuable tips regarding the importance of various products you have shown interest in.
  • Blog links that talk about environmental issues and its impact on earth and us.
  • Articles that explain how we can contribute to environmental conservation through small viable measures
  • In case of new product launches or promotions, just one info mail to intimate you about the same

Most importantly, we don’t like to fill your inbox with too many mails. Our emailing frequency could be maximum twice a month.

But if you still prefer to unsubscribe from our mailing list, we make it easy for you. Just click on the Unsubscribe’ link provided at the footer of our mails you receive and you are done with that.

It may be possible that sometimes mails from KORGEN may land in the spam folder of your email. Please check your spam folder and incase you find our mails there, mark them as ‘Not Spam and, as an additional measure, add our email id to your address book.

In case you don’t find our mails in your spam box, please do call us @ +91 7299066660 or mail to [email protected] so that we can sort it out for you.

That would be a surprise to us. We take every care to make sure our customers do not face any trouble while using our website.

This could be possibly a compatibility issue with the browser or device you use. Korgen website works well with the latest versions of all browsers and devices. Just updating your browser version should resolve it.

If the problem persists, please do call us @ +91 7299066660 or mail to [email protected] and we will quickly resolve it for you.

Pre and Post Sales Supports

A full range of services indeed, to make sure you sail through the whole process comfortably. This include the following:

  • In-person product presentations and demos
  • Water Testing (in-house and lab test)
  • Need Analysis and Product Recommendations
  • Free Site Visits and Site Assessments
  • Delivery and installation of products
  • Design, supply and execution of the projects
  • Standard and extend warranties
  • Supply of spares and consumables
  • After-sales Service
  • Flexible Service Contracts
  • Upgrades and modernization of existing products/plants

Please visit our Services Page for more information on this.

With respect to installation and after-sales service supports, for all KORGEN products, we install and commission the products, supply the required spares, consumables and also service the products on an on-call basis or under a service contract, at your option.

In case of third-party products (other brands), the service and spares will be directly provided by the respective brands or their service franchisees. In case the service responsibility is entrusted to us by any of the brands, then KORGEN Service Team will attend to your service requests.

Registering all your service requests can always be done through us (online or offline) as your single point of contact.

Need service for your products? Book your service request here.

Do you provide training for any of your products?

A: All Pumps can provide training to all products upon request.

Order-related queries

As explained in the previous sections, you need to just book an enquiry with us. Our specialist executives will meet you at your home or office and help you choose the right product/s that meet your needs and also offer the best possible prices for the same. Then you can place your order online.

Yes. You can place orders for multiple products online.

No. We ensure that our pricing is completely transparent in all aspects. Besides, this question does not arise since the final offer price is decided mutually between you and Korgen before you place your order.

Secondly, all other related charges will also be clearly mentioned in the product page, cart and the invoice we send you once you complete the order placement.

You can make the payment offline. However, all orders need to be placed through our website for proper streamlining and execution of these orders. Online orders also help in automatically capturing the warranty details and other scheduled supports we provide our customers without any manual intervention.

In case of extraordinary circumstances, such as long power outage and other exigencies, we may accept orders offline as a special case, at our sole discretion.

Immediately. The moment you place your order on our site, a system-generated electronic invoice will be sent to you. In case you have made the payment online, then the payment acknowledgement will also be included in your invoice.

At the time of delivery of the product, physical copies of the delivery challan will be handed over along with other product related documents. ie., User Manual, Warranty Card Etc.

We will soon be enabling our site to send the electronic copies of the product documents instead of physical copies.

Once your order is successfully placed, an acknowledgement will be displayed on the website. The electronic invoice with complete details of your order will also be mailed to your email id along with an SMS alert to your mobile number used while placing the order.

You can know the status of your order by using our Track your order page.

No. You cannot place order products that are marked as ‘Out of Stock’. When a product is marked ‘out of stock’, the Buy button will be automatically disabled.

This rarely happens with us. While our team puts its best efforts to ensure that the order placed by you is honoured and executed to your satisfaction, sometimes we may be forced to cancel order/s due to reasons that include, but not limited to, the following.

  • Due to a sudden stockout situation
  • Your location is not serviced by us
  • Wrong pricing offered by our employee or associate
  • Fraud behavior or faulty processes identified
  • At the sole discretion of KORGEN without assigning any reason

In the event of such cancellations, KORGEN shall keep you informed about the same and will refund the payment made by you as per our standard cancellation policy. Please go through our Terms of Sale for more details on this.

Please visit our Track your order page. Enter your order number, complete the OTP authentication and the status will be displayed online.

Sincere apologies. This should not have happened in the first place.

Please write to us at [email protected] and we will resolve it immediately

Payment Options and Security

KORGEN offers a bouquet of secure and convenient payment options as detailed here below.

Online Payments
  • Credit Cards - Visa, Master, Maestro, American Express issued in India
  • Debit Cards - Visa, Master, Maestro, Rupay, ITZ Cash card issued in India
  • Internet Banking with around 50 major banks in India
  • Select Online Wallets
  • Easy EMI options from a few major banks
Offline Payments
  • A/c Payee Cheques in favour of M/s.Korgen Tech Systems
  • Demand Drafts and Bankers’ Cheque in favour of M/s.KORGEN Tech Systems
  • NEFT and RTGS Transfers to our Bank Account

Please write to us at [email protected] and we will resolve it immediately

Know more about payments here

KORGEN does not accept cash payments and takes no responsibility for any cash payment made unless you receive a specific approval from our Accounts through our official email. Please go through our Terms of Sale for more details

Absolutely safe.

Please note that KORGEN does not ask for your financial information on our website. The moment you choose the online payment option, you will be automatically redirected to high secure ‘Payment Gateways’ operated by reputed Payment Service Providers with whom we have partnered.

Here you will be entering your confidential bank-card details in a highly secure PCI-DSS compliant page that uses advanced encryption technology as per the guidelines laid down by RBI. Thereafter, your transactions are processed through secure bank servers that are PCI DSS-II compliant.

The whole process offers the highest level of security for online payments. Please rest assured.

Absolutely safe.

You can pay by way of account payee cheques, DD or BC or NEFT / RTGS transfers in favour of M/s.KORGEN Tech Systems.

Yes. You can make part payments if that is mutually agreed at the time of order placement. While for standard consumer products the payment is fully collected in advance, for most of the custom-built products and projects, stage payments are accepted. Learn more

However, such part payments cannot be made online and you need to choose offline payment options.

Please rest assured. We are fully committed to protecting your personal information. Your personal information enables us to keep you posted on developments and transactions that are of relevance to you.

We follow stringent processes in the storage and disclosure of information which you have shared with us and KORGEN will not share or sell your personal information to anyone. Please go through our Privacy Policy for more details.

Firstly, EMI option is available only for standard consumer (pre-engineered) products sold by KORGEN. This include branded water purifiers, pressure booster pumps, domestic filters and water treatment plants.

Custom-built products and projects are not eligible for EMI facility.

However, the final consent for providing the EMI option comes from the respective banks and KORGEN has not role in those decisions.

Delivery and Fulfillment

Delivery charges or local cartage, as may be applicable, will vary from product to product. Our executives will share these details with you before you place your order.

This entirely depends on the product/s you order. Most of the consumer products (pre-engineered) are stocked products and the delivery can be completed anywhere between 1-6 days excluding public holidays and Sundays.

For custom-built products and large projects, the estimated delivery time is mutually arrived at after discussions. The time duration can vary based on the size of the projects, schedules stipulated by the customer and other related factors.

However, deliveries may be delayed due to unexcepted stockouts, project sizes, equipment unavailability and also due to factors beyond our control (read ‘Force Majeure’). Please go through our‘Terms of Sale’ for more details.

Once you place the order successfully, you will receive an on-screen acknowledgement and the system-generated order acknowledgement / e-invoice will be mailed to the email id you have used while placing your order.

On receipt of your order, our dispatch team will get in touch with you to know your convenient date and time for delivery and thereafter will deliver the ordered products along with the requisite product documents.

For custom-built products and projects, the delivery is done at one go or in stages as per the mutually agreed time frames.

Order Cancellations, Returns and Refunds

For standard products, you can cancel the order, prior to processing of the order and delivery of the ordered products or even at the time of delivery, against certain charges. Order cancellations are not accepted after delivery of the products. For custom-built products and projects, order cancellations are not allowed.

For more details on order cancellations, click here.

Please get in touch with our customer care team on our helpline (+91 7299066660) or mail to [email protected]

Please visit our ‘Terms of Sale’ that has complete details about this.

Yes. The free gift also needs to be returned along with the ordered product/s.

If you are eligible for a refund as determined by us, then the refund process will take a maximum of fifteen (15) working days. Please visit our ‘Terms of Sale’ for complete details.

This depends on what payment mode you originally chose to make the payment to Korgen. If you have made the payment by way of net banking or debit card, the refund will be done by direct NEFT transfer to your bank account. If you have used your credit card/wallets to make the payment, we will re-credit your account.

Depending on the situation, we may also use other modes to effect the refund, at our absolute discretion. However, cash refund is not an option. Please visit our ‘Terms of Sale’ for complete details.

Get in touch

Please feel free to call us at +91-7299066660 on any working days between 10 am and 6 pm and our customer care executives will address your queires.

Alternatively, you can also submit your queries online

We are glad to know about your interest. Please submit your details on our ‘Associate Registration page and our team will get in touch with you.

Water Purification

Today’s water is not found in its pristine form and has many types of physical, chemical and biological impurities due to various factors such as growing population, depleting ground water levels, excessive usage of chemicals, industrial activities, improper disposal of waste water etc.

Unlike the past, the traditional ways of purifying the water are no longer adequate due to the presence of above referred new-age contaminants. Therefore, water purifiers have today become indispensable to make the water safe for consumption.

However, choosing the right water purifier must be primarily based on the specific characteristics of the source water and this needs expert support. Get in touch with us to know more.

That entirely depends on your water characteristics.

Is your water physically and chemically potable? This means, the water is not turbid, clear looking, no heavy metals and the mineral (TDS) content is less than the permissible limits. Added to this is the assumption, that there is no sewage mix in your water.

In that case, boiling is still a safe way to disinfect your water though it slightly impacts the taste by removing dissolved oxygen from water.

There are very advanced UV-based water purifiers that are as effective as boiling but more convenient to use and in addition, also removes physical impurities and organic impurities from water. Book a Free Demo with us to know more.

Contaminants present in water can vary based on the source (Eg., Surface water, Ground water, Process Water etc) and are generally classified into four major groups. A few of them are listed here below and this is not an exhaustive list.

Physical Contaminants

Turbidity, Suspended Solids, Sediments, Silt, Sand

Chemical Contaminants

Inorganic Dissolved Solids (TDS-Minerals) - Sodium, Calcium, Magnesium, Potassium, Carbonates, Bicarbonates, Sulphates, Chlorides, Fluorides, Phosphorous Heavy Metals - Iron, Manganese, Lead, Mercury, Aluminum, Cadmium, Arsenic, Chromium, Selenium, Copper etc Chemicals (OC & IOC) - Pesticides, Herbicides, Drug residues, Human and Animal Waste, Oil, Nitrites, Nitrates, Ammonia, Chlorine, Chloramines, Surfactants, Phenolic Compounds, Hydrocarbon Residues, Volatile Organic Compounds, Household Chemicals, Microplastics, dissolved gases

Biological Contaminants

Bacteria, Viruses, Protozoa, Fungi, Cysts, Algae, Parasites such as Cryptosporidium, Giardia,

Radiological Contaminants

Radium, Uranium, Thorium, Radon, Cesium, Plutonium

From short term disinfections to long term chronic disorders and diseases, impure water can cause innumerable health issues. The nature of such health issues depends on the contaminants ingested and how long the impure water has been consumed.

In fact, it is estimated that 85% of all human diseases are caused due to water contaminations. Starting from simple to severe infections, fever and diarrhea due to biological contaminations, consumption of chemically impure water can lead to long-term chronic illnesses such as constipation, kidney impairment, digestive disorders, gastrointestinal reflux, cardiovascular diseases, intestinal catarrh, mental retardation, poisoning, blood pressure, fluorosis and even cancer.

There are various units of measurement to check the content of contaminants present in water. A few of the generally used measurement units are

  • PPM (parts per million)
  • PPB (parts per billion)
  • Mg/l (milligram per litre)
  • NTU (Nephelometric Turbidity Unit)
  • OD (oxygen demand)
  • CFU (colony forming units per milliliter)
  • Bq/litre (active concentrations)

Following are the most commonly used water purifiers (POU) in India today. All these water purifiers use different methods, single and multiple stages to remove the targeted contaminants from water.

  • Water Filters with just micron filter cartridges
  • Water Purifiers with iodine, bromine or chlorine-based disinfection technology
  • Ultraviolet (UV) rays-based Water Purifiers
  • Ultrafilter Membrane-based Water Purifiers
  • Reverse Osmosis Membrane-based Water Purifiers

First check your source water characteristics through a thorough lab analysis. The quality of your source water determines the type of purification required. The general thumb rules are here.

  • Physical Contaminants - Simple Water Filter will be sufficient
  • Physical and Biological Contaminants - Electric : UV-based water purifiers Non-Electric: UF and Iodine/chlorine based
  • Physical, Chemical and Biological Contaminants - RO Membrane-based Water Purifier

There are water purifiers that combine the above technologies to deliver distinctly superior results in terms of water purity and quality consistency.

Besides, the quantum of your water consumption per day will determine the size of the water purifier you require.

It is advisable to take expert support in choosing the right product. Get in touch with us.

There are many accredited government and private laboratories across India. Just google it and you will get the details. Call these laboratories and ask them for the procedures for taking water samples.

Generally, for physical and chemical analysis of water, all you need to do is take a clean 1 litre bottle (used only for storing water and not any other liquids/beverages), double clean and rinse it nicely, fill the bottle with your source water and submit in the lab.

In case you want to check the biological parameters too, then labs prescribe their own methods. Generally, you may have to collect sterilized containers from the respective labs, fill your source water and handover the same back to them.

It may take around 4-10 days to get your results.

At Korgen, we offer doorstep services in Chennai to collect your water samples and get it tested with our empaneled laboratories. Interested? Test your water now.

Yes. Using portable test kits will give you a broad idea about your water quality for select parameters, though the results may not be always accurate.

Test kits are commonly used to check parameters such as pH level, TDS Content, Hardness Level, Iron Content etc.

At Korgen, though our executives use such kits for free to give you an instant idea about your water quality, we always recommend a thorough lab analysis of your water before you make a final choice. Test your water today.

That depends on the type of technology used in the product

  • Gravity-driven chemical-based water purifiers do not need electricity.
  • UF membrane-based water purifier also do not need electricity since it can work in normal tap pressure
  • Ultraviolet (UV) Lamp-based water purifiers will need electricity for the UV lamp to work
  • Reverse Osmosis-based water purifiers will need electricity since they use high pressure pumps. However, they also come with storage tanks and hence purified water can be drawn out even if there is no electricity.

Yes. Invariably all the water purifiers will require service and maintenance in terms of consumable refilling, spare replacements, cleaning and general servicing. Some are DIY types and some will require expert assistance.

The frequency and costs of maintenance will vary and depend on the product/technology used. However, it’s worth spending.

Not recommended at all. Water purifiers should not be kept or installed without proper shelter.

That depends on many variable factors including the type and quality of the membrane, quality of prefilters, feed water characteristics, usage, cleaning procedures, maintenance of the RO purifier.

Assuming all these parameters are as per manufacturers’ recommendations, a tap water RO membrane used in Home RO purifiers may deliver optimal results up to 18 months. This may sometimes get cut short at 12 months or extend up to 24 months.

Since brackish water membranes and sea water membranes, used in large Reverse Osmosis Plants, come with elaborate pre-treatment modules, cleaning apparatus and safety instrumentation, the membrane life can be anywhere between 2-3 years, sometimes longer.

As far as UV purifiers are concerned, the question of storage does not arise since the purification is instantly done as and when required

With respect to chemical-based purifiers, as long as the chemical residues remain in water, it is safe for drinking. Maximum storage time could be around 24 hours.

With respect to Home RO water purifiers, 24 hours may be the maximum time you can keep the water stored inside the device. In case the purified water is taken out of the inbuilt storage tank, then the purity level will depend on how the water is stored thereafter.

Note: Some RO purifiers provide anti-microbial protection inside their storage tanks and this prevents biological recontamination thus extending the shelf life of purified water.

The power consumption of a UV purifier and RO purifier varies. While a UV purifier consumes hardly 8-12 watts, it is around 25-30 watts for RO purifiers. In both the cases, the total monthly payout is miniscule. And the benefits are disproportionate.

Not at all recommended. RO membranes reject close to 90% to 98% of the dissolved solids present in water. That will leave the product (purified) water with a TDS content of less than 50 ppm wher in the hard salts (Ca,Mg) content could be less than 15 ppm.

Consumption of water with very low TDS / hardness can adversely impact health on account of severe mineral deficiencies in the long term.

Ideally, drinking water with TDS between 75 ppm to 300 ppm is optimal and good for health.

Note: If the RO purifier that you plan to buy or use has a blending or remineralization process coupled with a disinfection stage, then it may be safe to use.

Home RO purifiers

Home RO purifiers use tap water membranes that purify water with a TDS of up to 2000 ppm and the recovery percentage for these devices is generally around 15-20%. Therefore, the salt concentration in the reject water will only be slightly higher than the feed water and good enough to use for general household utility purposes. Eg., Watering plants, washing vessels, flushing toilets, recharging rain water harvesting pits etc

Large RO Plants

Large RO plants use brackish water (<8000 ppm) or sea water membranes (> 8000 ppm) based on the TDS content in the source water. The recovery percentage for these RO plants could start from 25% and can go up to 75% of the feed water volume depending on the number of membranes, arrays and other factors.

Due to higher permeate recovery, the salt concentration in the reject water from these RO plants could be medium to very high thus making it unsuitable for any utility purposes.

Disposal of RO reject include discharge to the sewer systems or storm water drains or nearby water bodies or solar ponds, watering trees and crops that either feed on saline water or are salt-tolerant (Eg., Coconut Trees), thermal evaporation etc

Generally, yes. All bottled water and packaged drinking water manufacturers use advanced technology to purify water. These companies are monitored by the respective regulatory authorities.

However, issues may arise if there are compromises on the quality of the treatment machinery, technology, storage and distribution processes that may result in improper or insufficient purification of water or recontaminations. Some unruly companies resort to such unethical practices and often get caught by the law. Possibilities of improper purification processes, substandard components and recontamination possibilities are virtually nil when you use water purifiers of credible brands.

Secondly, the cost factor. The cost of buying drinking water is higher than the cost of generating drinking water instantly at your own place.

  • WHO Standards - Optimal TDS is 300 ppm
  • BIS Standards - Desirable Limit - 500 ppm
  • (IS 10500) Tolerable Limit- 2000 ppm (in the absence of any other source)
  • WHO - World Health Organization, Geneva, Switzerland
  • BIS - Bureau of Indian Standards
Water Treatment

Water treatment is essentially a basket of multiple processes that modify, alter and improve the quality of water to make it suitable for specific end uses. Water treatment is extensively used for residential, commercial and industrial segments for various purposes.

Water treatment and filtration processes can significantly vary depending on the source water characteristics, contaminants present and the desired quality of the output water.

Though in the industry parlance, there is distinct difference in meaning between the terms ‘Water Treatment’ and ‘Water Purification’, these two terms are often interchangeably used in the market to convey the same meaning.

Water treatment is a more comprehensive term that covers all types of treatment processes that modify, alter and improve water quality in various ways. Whereas, water purification is a subsect of water treatment and specifically focuses on purification of water for drinking and consumption.

Water treatment processes are designed for a multitude of purposes. The requirements of water treatment for residential, commercial and industrial segments may be similar in some counts and vary in some others.

For more details on this, please visit our Segments section.

Contaminants present in water can vary based on the source (Eg., Surface water, Ground water, Process Water etc) and are generally classified into four major groups. A few of them are listed here below and this is not an exhaustive list.

Physical Contaminants

Turbidity, Suspended Solids, Sediments, Silt, Sand, Colloidal Silica

Chemical Contaminants

Inorganic Dissolved Solids (TDS-Minerals) - Sodium, Calcium, Magnesium, Potassium, Carbonates, Bicarbonates, Sulphates, Chlorides, Fluorides, Phosphorous Heavy Metals - Iron, Manganese, Lead, Mercury, Aluminum, Cadmium, Arsenic, Chromium, Selenium, Copper etc

Chemicals (OC & IOC) - Pesticides, Herbicides, Drug residues, Human and Animal Waste, Oil, Nitrites, Nitrates, Ammonia, Chlorine, Chloramines, Surfactants, Phenolic Compounds, Hydrocarbon Residues, Volatile Organic Compounds, Household Chemicals, Microplastics, dissolved gases

Biological Contaminants

Bacteria, Viruses, Protozoa, Fungi, Cysts, Algae, Parasites such as Cryptosporidium, Giardia,

Radiological Contaminants

Radium, Uranium, Thorium, Radon, Cesium, Plutonium

There are various methods to check and quantify the level of contaminants present in water. A few of the generally used metrics are here below

  • PPM (parts per million)
  • PPB (parts per billion)
  • Mg/l (milligram per litre)
  • NTU (Nephelometric Turbidity Unit)
  • OD (oxygen demand)
  • CFU (colony forming units per milliliter)
  • Bq/litre (active concentrations)

The major parameters to be checked while choosing the right water treatment plants are here below.

  • Characteristics of the source water (Detailed water analysis)
  • Desired output quality and applications of the treated water
  • Volume of water to be treated per hour and per day
  • Site Conditions
  • Features and technical support required by the client

Once we zero in on the right technology and process, the design basis for the treatment plant will differ based on other additional parameters. Choosing the right water treatment plant is clearly a professional exercise that requires expert guidance. Get in touch with us.

Yes. We have partnered with accredited laboratories in Chennai to offer various types of comprehensive water and wastewater analysis packages, that cover physical, chemical, biological and radiological parameters, at very competitive rates. The Water Analysis Packages are recommended based on your water source and the desired end use of treated water. Following are the commonly used water analysis types.

  • Raw Water Analysis (Full and Part)
  • Treated Water Analysis (Target Parameters)
  • Construction Water Analysis
  • Industrial Process Water Analysis
  • Sewage and Kitchen effluent Analysis
  • Industrial Effluent Analysis

At Korgen we provide doorstep services to collect water samples and deliver the analysis reports. Generally, it takes around 4-10 days to get the analysis reports from the lab.

Free Inhouse Testing

At Korgen, we use portable water testing kits to offer free inhouse analysis of your water on select key parameters just to give you an instant idea about your water quality. Eg., pH, TDS, Hardness and Iron.

However, we always recommend a thorough lab analysis of your water before you make the final choice.

Want to test your water? Book now

Very much. All types of water treatment plants require service and maintenance. This includes periodical replacement of consumables such as filter media, carbon granules, resins, membranes, cartridge filters etc. Spare replacements, cleaning and routine general servicing are also essential to ensure optimal and consistent delivery of plant performance in addition to its longevity.

Very few water treatment plants are of DIY types and the rest require expert handling. The maintenance expenses and frequency of services will vary and depend on the technology, treatment processes and size of the plant.

At Korgen, we provide intense training session to your personnel (in case you have your own staff) for operating the plant and carry out regular maintenance procedures. For trouble shooting, supply of spares and consumables and major service requirements or overhauling exercises, our expert team will directly get involved.

On the other hand, if you do not have your own personnel to handle the plant, we offer a plethora of competitively priced service packages to ensure that the treatment plant work at optimal efficiency at all times. Please visit our Service Section to know more.

Given today’s advanced technologies and features, operating a water treatment plant has become simpler than ever before.

Of course, there are operational procedures to be followed at specified intervals that may vary from product to product. But these are very simple processes that can be carried out by anyone without much training.

Water treatment plants come in manual, semi-automatic and fully automatic versions. And you can choose the version based on your preferences and priorities.

For large treatment plants, Korgen offers operation and maintenance (O&M) contracts that will relieve you of all the operational and maintenance difficulties. Learn more

Water treatment plants can be installed on the ground, under the ground, terrace or on elevated platforms depending on the type/size of the plants and user preference

Though some water treatment plants may not require shelter or may require it in part for critical components, we always recommend properly constructed shelters for all our water treatment plants to protect it from the vagaries of nature. Eg., Rain and excessive sun light

We will need more details about your water characteristics and the source of contaminants before recommending a specific product. However, as a general thumb rule, colour, odour, residual chlorine and select organic contaminants can be effectively removed through a correctly configured Activated Carbon Filter. Korgen offers a wide range of pre-engineered and custom-built Activated Carbon Filters to match your needs. Learn more about this.

A full water analysis report will give us a fair idea as to what are the contaminants that are causing cloudiness. With respect to turbidity and other physical impurities, a rightly sized Pressure Sand Filter or Multimedia Filter should do fine. Korgen offers a wide range of pre-engineered and custom-built PSF and MMF to meet your needs. Learn more about this

Hard water is a result of excessive calcium (Ca) and Magnesium (Mg) present in water. Generally, if the Hardness content in water is more than 300 ppm, it is considered excessive. And the desirable hardness content in softened water is around 75-100 ppm. There are majorly only the following types of treatment processes to address water hardness.

1. Ion Exchange Technology 2. Sequestering Process

In ion exchange process the hard salts are replaced with soft salts using the conventional resin process. In sequestering technology, hard salts are not removed from water but are made chemically inert by encapsulating them with polyphosphate media. Learn more

Specific odour such as foul smell, rusty smell can be attributed to various factors. A detailed water testing can help in identifying the source and decide on the treatment method.

However, rusty smell combined with brownish coloured water, in all probability, could be due to presence of dissolved and suspended iron along with other physical impurities.

A correctly configured aeration tank and Iron Removal Plant can solve this. Learn more

Yes. We can design, build, supply and erect customized water purification and treatment plants of any size based on your requirements. After the warranty period, we also offer various types of after-sales service packages at very competitive rates.

Please get in touch with us or Book an Enquiry and our trained executives will share more details with you.

There are many time-tested technologies used for disinfecting water. Eg. Chemical dosing (generally chlorine), Ultraviolet rays, Ozonation etc. On the filtration side, Ultrafiltration Membranes are used to remove pathogenic microorganisms from water.

Products based on these technologies can be configured as a point-of-use (POU) system or a point-of-entry system based on your requirements.

Choice of technology depends on various key factors. Please get in touch with us for more details.

We can offer you DM/MB combo plants to make sure that your process water is completely demineralized. In addition, based on your conductivity requirements, we also offer fine polishing units.

Assuming the water used in the swimming pool adheres to general compliance parameters, you will need the following treatment processes to recycle and reuse the swimming pool water

  • Chemical Dosing (or) Ozonation (or) UV Rays
  • Pressure Sand Filter (Coarse)
  • Pressure Sand Filter (Fine)
  • Activated Carbon Filter

The size of the treatment plants depends on the total water holding capacity of the pool, average quantity of water maintained in the swimming pool and your desired treatment cycle.

Very much. We can design, engineer, supply and erect customized water treatment plants for all types of industrial and commercial requirements. Once the warranty period gets over, we also offer flexible after-sales service packages at very competitive prices.

All the components and equipment used in our treatment plants are manufactured under stringent quality control norms or sourced from reputed global and national brands and tested to international standards.

Please get in touch with us or Book an Enquiry and our trained executives will share more details with you.

At Korgen, we can offer you manual, semi-automatic and fully automated water treatment plants using various modes of advanced electronics. We use PLCs (Programmable Logic Controllers) with digital display, DCS (Distributed Control Systems), SCADA (Supervisory Control and Data Acquisition Modes), RMCS (Remote Monitoring and Communicating Systems) to automate the plant operations and monitor its functioning.

Our automation systems are very user-friendly with flexible control options.The extent of automation is determined based on plant viability and client preferences.

Automation significantly reduces the operational burden and minimizes the possibilities of human errors.

Sewage Treatment

Sewage treatment is a process by which physical, biological and select chemical contaminants are removed from wastewater generated by households, municipalities, commercial establishments and industries. The sludge generated during the treatment process undergoes further treatment before disposal.

The term sewage includes toilet wastewater, kitchen wastewater and sullage (bathroom wastewater).

Note: The wastewater generated from bathing, washing clothes and kitchen activities is known as sullage or grey water. The wastewater generated from toilets is termed as black water or sewage. However, in common parlance, especially in the treatment context, both these wastewaters are combinedly referred to as Sewage.

Main sources are the sewage / wastewater generated in toilets, bathrooms, kitchens and water-using appliances such as washing machines, dishwashers etc.

This wastewater could come from households, offices, hotels, educational institutions, restaurants, other commercial establishments, stormwater, vehicle wash centres and factories.

Though largely homogenous, the constituents found in sewage generally depends on its sources. Typically, sewage will have the following contaminants.

  • Physical constituents such as trash, tree limbs, leaves, egg shells, bone chips, sand, mud, gravel, seeds, rags, sticks, plastics, sanitary pads, tampons, vegetable-fruit wastes, debris
  • Suspended solids
  • Colloidal matter
  • Oil and fat
  • Biodegradable organic matter
  • Pathogenic microorganisms
  • Nutrients Eg., Nitrites, Nitrates, Phosphorous
  • Detergents, soaps, cleaning chemicals and other toxic chemical compounds
  • Heavy Metals

Given the enormous volume of sewage generated in our country, discharge of untreated raw sewage can severely contaminate the soil, ground water, fresh water bodies such as lakes, dams, rivers and the surrounding ecosystem. One key objective of sewage treatment is to make sure that such dangerous contaminations are prevented. Properly designed sewage treatment plants effectively reduce BOD, COD and remove the dangerous contaminants found in wastewater to levels less than the standards stipulated by regulatory authorities for discharge.

Another objective of sewage treatment is to recycle and reuse the treated sewage for select secondary and tertiary applications. It is estimated that fresh water requirement can be substantially reduced by almost 50- 60% through recycling and reusing treated sewage.

Some useful byproducts of sewage treatment are organic fertilizers and biogas (methane) generation (only if anaerobic treatment process is used).

Treated sewage is generally reused in the following ways.

  • Gardening, water fountains, toilet flushing and vehicle washing
  • For construction activities
  • Cooling tower makeup
  • Agriculture and landscape irrigation
  • Recharging ground water aquifers
  • Other industrial processes

Note: Treated sewage from STPs that use membrane-based tertiary treatment modules can be used for higher purposes even.

Sewage treatment is carried out using controlled biological processes that encourage rapid growth and proliferation of microorganisms to consume and digest the organic matter. Fundamentally, there are only two types of biological processes namely:

  • Aerobic Process - In this process, proliferation of certain kind of microorganisms occurs in an oxygenated environment. These bacterial species that thrive in the presence of oxygen digest the organic matter present in sewage and leave out water and carbon dioxide.
  • Anaerobic Process - In this process, microbial multiplication occurs in the complete absence of air. These bacterial species that only thrive in an anaerobic or anoxic environment digest the organic matter present in sewage and leave out biogas that is around 70% methane and 30% carbon dioxide with residual fractions of other gases.

All sewage treatment technologies deploy either one of these biological processes in their treatment scheme, but in unique ways. Korgen uses only the aerobic biological process in its STPs.

Following are the time-tested and proven sewage treatment technologies that are used in sewage treatment.

  • Activated Sludge Process (ASP)
  • Fluidized Bio Bed Reactor (FBBR)
  • Submerged Aerobic Fixed Film Reactor (SAFF)
  • Sequential Batch Reactor (SBR)
  • Membrane Bio Reactor (MBR)

The choice of technology depends on various factors as explained in our design basis and the client preferences.

Sewage treatment plants are sized based on the quantum of wastewater generated in the given premises. In that, the tank structures and divisions are determined by other key factors such as average daily flows, peak hourly flows and instantaneous peak flows. Hydraulic Retention Time (HRT) is also an important factor.

Volume of wastewater generated is arrived at by the number of people using the said premises in various ways like inhabitants, guests, workers, their activities within the premises and their average water usage (PE).

Sizing of STPs is a professional exercise and needs expert guidance. Get in touch with us for more details.

BOD stands for biological or biochemical oxygen demand which is the amount of dissolved oxygen required by the microorganisms to proliferate and break down organic matter present in a given quantity of water at certain temperature over a specific period of time. BOD value is commonly expressed in milligrams per litre.

COD stands for chemical oxygen demand which is the amount of oxygen required to chemically oxidize all organic and inorganic matter present in the wastewater.

COD values always tend to be greater than BOD values since COD captures both biodegradable and non-biodegradable matters, whereas BOD is only about biodegradable ones.

On an average, influent BOD in normal sewage can be anywhere between 300 mg/l to 450 mg/l depending on the source of generation. As per regulatory standards, the BOD must be reduced to 25 mg/l before discharging the treated effluent.

With respect to COD, average influent COD in sewage can be between 600 mg/l to 900 mg/l. As per regulatory standards, the COD level must be brought down to less than 75 mg/l before discharge.

Advanced treatments can further bring down these levels up to 5 mg/l and 15 mg/l respectively.

Yes. We have partnered with accredited laboratories for precise analysis of BOD and COD levels in sewage.

Get in touch with us for more details.

The number of stages in sewage treatment may vary based on the technology adopted. In some technologies, a few stages may be skipped and in few other technologies, stages get combined.

Number of stages in sewage treatment is broadly classified as pre-treatment, primary treatment, secondary treatment, tertiary treatment and sludge management. The following are the sub-stages that raw sewage generally goes through for complete treatment.

  • Screening
  • Comminution
  • Sedimentation
  • Oil and Grease Removal
  • Equalization
  • Aeration
  • Settling
  • Disinfection
  • Filtration
  • Fine Polishing

Note: Removal, disposal or reuse of bio-sludge happens as a parallel process. Learn more

There are basically two methods by which microorganisms are allowed to grow and proliferate. ie., Suspended Growth and Attached Growth.

In suspended growth method, microorganisms grow and proliferate in suspension within the sewage stream. In the attached growth method, microorganisms attach themselves to an inert carrier medium. These media are generally made of UV-stabilized wear-resistant plastics in different shapes to augment the surface area for better and faster growth of microorganisms.

Learn more about sewage treatment technologies that use these growth modes

Every technology has its own advantages and limitations

The choice of technology is purely based on many important variables that include sewage characteristics, sewage volume, site conditions, intended application of the treated effluent, space availability, budget constraints and client preferences.

Get in touch with us to know how to choose the most appropriate sewage treatment technology for your site.

Yes. While a very mild odour in close vicinity of the sewage treatment plant is normal, strong stench is an indicator that corrections are required and this stench could be on account of many plant and non-plant factors.

Plant factors include inadequate sealing of raw sewage collection, sub-optimized aeration process, improper clarifier operations, anaerobic activation in the sludge holding tank, faulty operations and maintenance activities etc.

Non-plant factors include weather conditions, temperature inversions, wind velocity and direction.

However, the good news is that odours can be significantly controlled, minimized and to a good extent be eliminated by correcting / fine tuning the treatment process and also using specialist devices. Eg., Deodorizing Misting Systems, Chemical odour neutralizers, Biofilters, Wet scrubbers

With respect to the sewage collection tank (equalization tank), it is by default constructed underground to facilitate easy collection of sewage by gravity.

For the other tanks required in the process (civil or other MOC), the best option is on the ground. In case of genuine space constraints, then basement space may be considered. But that will entail extra works and equipment.

Electro-mechanical components used in the sewage plant do require a proper shelter. The pumps and blowers are best placed in acoustic enclosures.

Once the STP is successfully erected, the commissioning and process stabilization activities will commence.

The major challenge here will be the initial startup. STPs are generally designed for the total sewage volume expected to be generated from the respective premises. There won’t be any issue if the premises or building is fully occupied but that is mostly not the case. If the sewage generated is less than 30% (minimum load) of the designed volume due to lesser occupancy rate, the process efficiency can take a severe hit.

However, this can be addressed at the design stage itself through modular structures designed to handle lower loads. Modular structures, in addition, can also handle fluctuations in influent flow.

Get in touch with us to know more.

Yes. All sewage treatment plants, regardless of the technology used, need close monitoring of key parameters, service, replacement of consumables and spares. This is critical to ensure optimal and consistent performance of the plant.

The frequency of service and maintenance expenses will vary and depend on the technology adopted, equipment used and size of the plant.

Sewage treatment plants need expert handling and therefore trained operators are certainly required. At Korgen, we provide well-trained plant operators under flexible Operation and Maintenance (O&M) contracts for STPs customized to your requirements at very competitive rates.

On the other hand, if you have your own personnel to manage the plant operations, our team can provide sufficient training for them to carry out the operations. In such cases, our involvement will be limited to trouble shooting, general service, supply of spares and consumables.

Please get in touch with us to know more.

At Korgen, we can offer you manual, part-automated and fully automated sewage treatment plants through various modes of advanced electronics and intelligent control systems.

We use PLCs (Programmable Logic Controllers) with digital display, DCS (Distributed Control Systems), SCADA (Supervisory Control and Data Acquisition Modes), RMCS (Remote Monitoring and Communicating Systems) to automate the plant operations and monitor its functioning.

Our automation systems are user-friendly with flexible control options. The extent of automation is determined based on plant viability and client preferences.

Automation significantly reduces the operational burden, plant downtime and minimizes human interventions and errors.

Air Purification

Air purification refers to the removal of indoor air-borne pollutants and particulate matters using specialist devices to improve the indoor air quality.

The type and size of air purification devices or air purifiers required depend on the nature of pollutants to be removed and area coverage. Given today’s air pollution levels, air purifiers are widely used in homes, offices, commercial establishments and factories.

Today, air pollution is one of the hotly debated environmental concerns across the world and more particularly in India. In most of the Indian cities, air pollution has reached alarming levels and as per a WHO report, many of these cities also figure in the list of world’s most polluted places.

While outdoor air pollution does affect our health, indoor air pollution is much more dangerous. EPA (Environmental Protection Agency) estimates that the level of indoor air pollution is about five to seven times higher than outdoor pollution.

These indoor pollutants are highly dangerous to human health when inhaled as they can cause a number of ailments. While headaches, nose blocks, cough, fatigue and dry eyes are some of the minor ailments caused by inhaling polluted air, continuous exposure to indoor air-borne contaminants can chronically affect our health through infections, wheezing, asthma, other respiratory diseases, cardiac issues, stroke risks, allergies, cancer etc.

Since we spend close to 90% of our time indoors, having an air purifier at home or office or at both the places can significantly reduce the load on our respiratory system by providing fresh and pollution-free air. It has also been found that breathing fresh air also considerably improves the quality of our sleep.

Unknown in the past, today’s new-age air pollutants come from diverse sources such as vehicle emissions, kitchen fumes, industrial exhausts, mining, burning of wastes and landfills, poor disposal of sewage / factory effluent and usage of household chemicals such as detergents, glues, paints, perfumes, repellents etc.

Some of the dangerous pollutants commonly found in indoor air are carbon monoxide, carbon dioxide, particulate matter, pollen, fungi, pet hair, animal dander, mould spores, tobacco smoke, aerosols, volatile organic compounds, sulphur dioxide, lead, mercury, nitrogen oxides, toxic chemicals, ozone and air-borne pathogenic microorganisms.

During winters we keep the windows and doors closed to maintain warmth and in summer seasons, again the windows and doors are kept closed to maximize air conditioning. These practices severely affect the indoor airflow (entry of fresh air and exit of stale air).

In the absence of sufficient cross ventilation and airflow, these pollutants get trapped indoors and recirculated within the premises which makes it all the more dangerous.

Most of the air purifiers use a multi-stage process to purify indoor air. The motor inside the air purifier draws the impure air which in turn passes through a series of filters and the purified air is then let out back into the room. This process continues non-stop until the air purifier is switched off.

High efficiency filters such as HEPA trap minute particulate matter (PMs) as small as 0.3 microns, allergens and other pollutants whereas carbon filters are used to adsorb smoke, kitchen fumes, vehicle emissions, odour and VOCs. The number of filters vary between models and depend on various performance parameters.

Besides filtration, air purifiers also use technologies such as negative ion generation, ozone and UV light to eliminate airborne pathogenic microorganisms (virus, bacteria, fungi), volatile organic compounds, gaseous chemicals etc.

While portable air purifiers are designed to clean rooms of different sizes, the whole house air purifiers are directly connected to the HVAC system.

As explained in our earlier questions, air pollution levels, especially indoors, have reached dangerously alarming levels and therefore everyone living in cities need air purifiers. However, the following are most vulnerable to air pollution.

  • Infants, Children and Elderly People
  • Pregnant Women
  • People with respiratory diseases such as asthma and COPD
  • People with heart conditions
  • Foreign nationals who come from other countries where pollution is relatively lesser
  • People who work or spend a lot of time in polluted environs

No. Air purifiers are not meant to act as a treatment or cure for ailments caused by air pollution or for any other medical conditions.

But since it significantly reduces the amount of pollutants present in the air, it can provide relief from the symptoms associated with these ailments. Regular usage of air purifiers may also prevent people from contracting respiratory-related diseases caused by indoor air pollution.

That depends on the brand and model you choose. Key performance indicators of an air purifier are space coverage, CADR, CFM, ACH and noise levels.

At Korgen, we sell portable air purifiers of reputed brands with varying coverage capacity and technologies. Right from small bedrooms, kitchens, living rooms and large office spaces, we can offer you multiple options to choose from.


CADR - Clean Air Delivery Rate

CFM - Cubic Feet Per Minute

ACH - Air Changes per Hour

Yes. Electricity is a basic requirement for air purifiers to function.

Following are the key factors that you need to consider for choosing the most appropriate air purifier model

  • Where do you want to use the air purifier?Eg., Home, office, shop floor
  • How much space you plan to cover?
  • Are you targeting a single room or multiple rooms within that space?
  • Do any of the inmates/users have specific health conditions?
  • Your preferred CADR, CFM and ACH ratings
  • Are you looking at only filtration or also disinfection?

More than servicing, air purifiers will need filter replacements at specific intervals. The periodicity of these replacements will depend on the number of filters used and their quality. User manuals of the respective models/brands will have the details of the replacement frequency. Besides, there are air purifier models that come with life indicators for these filters and therefore it is easy to know when these filters require replacements.

By and large, the usage life of these filters is anywhere between three months to twelve months. Branded HEPA filters typically last from 3-5 years, if vacuum cleaned twice a year.

Secondly, the other important components such as the motors, ion emitters, ozone generators and UV lights do not really require frequent servicing. All these are replaceable items and the life of these components sometimes stretch for years.

Maintenance or running costs of air purifiers are negligible compared to other appliances or equipment. Following are the main cost heads.

  • Power Consumption
  • Good air purifiers use motors that are designed to be energy efficient and uses minimal power. Most of them consume power far lesser than a fan

  • Periodical replacement of filters
  • Mostly washable / cleanable filters with usage life anywhere between six months to eighteen months

  • Replacement cost of other electronic components - Very rare

Most of the air purifiers operate at multiple speed settings and their sound level primarily depends on the operating speed of the fan motor. While at lower fan speeds the sound may be slightly audible, it may generate the sound of a ceiling fan at higher speeds.

The sound levels of branded air purifiers are generally between 10dB to 60 dB and are within the permissible limits stipulated by the regulatory authorities. However, it must be noted that noise is subjective and is perceived based on an individual’s noise tolerance levels that vary from person to person.

Besides, reputed brands also deploy various types of sound-reducing technics to provide quieter operations.

That depends on the model, brand and the manufacturers’ recommendation. However, most of the air purifiers are designed for continuous running. Initially, the maximum speed limit is used to speed up purification and thereafter the speed can be reduced using the settings.

From a technical point of view, there are handy air quality meters to detect and measure indoor pollution levels. You can also check the filters to see the filth it has been removing.

On the other hand, once you start using an air purifier, you will be able to observe a noticeable change in the quality of air in terms of purity and freshness when you breathe. People having respiratory ailments or conditions will be able to feel the air freshness better.

After a few days, you will also find that your room is visibly cleaner with very little dust accumulation on the floors, furniture and other items in your room.

It is best to place the air purifier wherever you spend a majority of your time. For instance, during night time it could be your bedroom and during the day it can be your living room, dining hall, kitchen or office rooms. Since portable air purifiers are ‘plug and use’ types, you can easily move it around.

Besides, you must also make sure that the airflow is not interrupted by giving at least 18-24 inches clearance space around the back and sides of the unit. This helps in free flow of air at the entry and exit vents resulting in better circulation.

Portable air purifiers can only clean rooms that are not separated by walls. If you want to purify multiple rooms separated by walls and doors, then you must consider buying more than one unit.

Caution: Never place an air purifier in a corner or under a shelf since this can severely limit the airflow and thereby the efficacy of the unit.

No harm. It is also good to have a whiff of fresh outside air while the air purifier is running. However, for the first 30-45 minutes, it is advisable to keep the windows closed so that the existing indoor air is fully purified.

It must be noted that fresh entry has to be facilitated inside the room by keeping the windows open for at least 45 minutes to 1 hours per day.

Pressure Booster Pumps

A pressure booster pump is a specialist device used to increase and maintain water pressure and deliver water at desired pressures to your pipes, taps and other water outlets consistently. Booster pumps cannot function independently and are meant to boost the performance of your already installed pump system.

The following are a few of the general reasons for low water pressure.

  • Gravity Pull
  • Distance between water source and deliver destination (Horizontal and Vertical)
  • Size of the distribution pipes
  • Simultaneous use of too many water outlets
  • Use of water treatment plants and other water fixtures
  • Improperly planned plumbing infrastructure
  • Clogging of pipes and plumbing accessories

Pressure booster system consists of a centrifugal pump, pressure switch and a pressure tank. They facilitate the movement of water away from a specific point. These pumps rely on impellers that draw water into the pumps and pressure increases when water passes through the impeller.

In a pressure booster system, when water is drawn from any of the outlets, the pressure tank supplies water at the desired pressure level. When more water is drawn continuously from the pressure tank, the line pressure will drop and at a pre-set minimum pressure, the pump will start up and fill the pressure tank with water. As water consumption stabilizes or drops, the pump will automatically stop (cut-off pressure).

Pressure booster pumps may either have a single impeller or multiple impellers.

Please visit our Key Parts section to learn more about this.

The following key factors are to be considered while buying a pressure booster pump.

  • Average flow rate in LPM (litres per minute)
  • Peak flow rate
  • Water Flow Profile of the premises
  • Desired maximum pressure
  • Total number of water outlets (taps, showers, flush tanks, water-using equipment etc)
  • Total Dynamic Head
  • Static Head | Friction Head | Residual Head | Inlet Head Pressures
  • Number of pumps planned

Strongly recommended.

Pressure tanks protect and prolong the life of the pump by preventing rapid cycling of the motor (frequent starts and stops). Pressure tanks provide water under pressure for delivery between pump cycles.

No. Pressure Boosters are not designed for outdoor installations and need to be protected from rain, excessive heat, freezing temperatures and moisture. Installing them in closed environs maximizes the life of a pressure booster system.

Yes. The system pressure or the cut-in and cut-off pressures can generally be adjusted though it is a professional task best left to experts.

Solar Energy – Frequently Asked Questions

Firstly, you straightaway save a good amount on your electricity bills month after month. By using a renewable energy source, you also reduce your carbon footprint and positively contribute to climate changes and reduction of dangerous air pollutants.

Solar photovoltaic (PV) panels absorb the sunlight throughout the day and convert it into direct current (DC). Since we use alternating current (AC) for all our electricity requirements, this direct current produced by the solar panels is passed through an inverter that converts DC into usable AC.

The panels are mounted on a frame with minimal interference with the waterproofing and structure of the roof. The frame is designed to provide correct elevation for the panels so that the maximum amount of available sunlight is received and converted.

Additional equipment can be provided to capture information such as the total energy production, daily energy production and instantaneous power. This data will fluctuate depending on the time of year, availability of sunlight, cloud cover, wind speed, temperature and will allow you to keep a record of your system’s performance.

You can use this electricity for your home, office, commercial establishments, factories and the excess electricity can be sent to the Government Grid in case net metering facility is available.

Solar panels are completely dependent on sunlight to produce electricity. The amount of electricity generated by solar panels is directly proportional to the intensity of sunlight.

Therefore, if the weather is cloudy or if it is raining, the power produced by solar panels will reduce but it does not stop. At night there will be zero power generation.

However, with 300 sunny days, India is abundantly blessed with this natural resource and is the best place for maximum solar power generation.

The intensity of the sunlight (radiation) generally depends on weather conditions, the time of year, the time of day and the latitude of the generation point. The amount of energy that solar panels can generate depends on the following factors:

  • Intensity of the sunlight
  • Amount of dust and water vapour in the air
  • Cloud cover
  • Weather Conditions
  • Shading of the Solar Panels
  • Quality of the Solar Modules

Very much. Roof orientation is a very important factor in the amount of solar energy the panels can produce. For example, solar panels facing southward direction will generate electricity lesser than the ones facing northward direction. However, east and west installations are good options depending on the installation scenario and site conditions.

As explained in our earlier questions, solar photovoltaic cells produce energy from sunlight and therefore the amount of energy produced depends on the intensity of the sunlight.

Typically, the solar system starts producing energy after sunrise and stops the production after sunset. The energy output increases gradually, peaks around noon and then starts gradually decreasing as the sun starts setting.

Yes. Today, solar power is cheaper than grid power for consumer categories across most states. Besides, solar system is a one-time investment whereas grid tariff keeps increasing periodically. Therefore, by choosing a solar system, you are effectively freezing your energy price for the next 25 years.

Very much. In fact, rooftops are the ideal place for fixing solar panels. However, many aspects need to be evaluated to determine if your place (home or office or factory) is suitable for installation of solar panels. We need to check the overall structural strength of your building, orientation, space availability, shade factor and a few other key parameters to assess the suitability of your roof. There are also workarounds in case your roof is not suitable for placing the solar panels.

Get in touch with us to know more

Though rooftop (Roof/Tower) installation is the most common way of installing solar power systems, installations can also be done in the following ways based on site conditions and client preferences.

Ground Mounting | Wall Mounting | Pole Mounting | Car Parking Area | Elevated Structures | Open Areas.

This depends on the size and type of solar energy system you choose. You have to opt for a solar system that generates enough electricity to meet your requirements. Secondly, when you opt for a solar energy system without storage, then you will have to use grid power when your solar system is not producing sufficient amount of electricity. Eg., Night times, cloudy weather conditions, snow falls, raining seasons etc

Though it is technically possible to stop using grid power by choosing the right module and backup storage batteries, it may not be a good idea to completely go off from the grid on account of the costs involved in terms of investments and maintenance of storage batteries.

A grid-tied solution with net-metering is a good choice. However, when you add up storage batteries, it gives you even more protection during outages.

Solar PV Panels are time-tested and highly proven products that have been in use for decades and are quite durable, require very little maintenance and can last for more than 30 years.

Reputed brands offer up to 25 years warranty for their panels. Other equipment and components used in the solar modules such as inverters and batteries have a reasonably long life but may need service and spare replacements at periodical intervals.

There are basically three types of solar power systems. They are:

  • Grid-tied or On-Grid Solar Power System
  • Off-Grid Solar Power System
  • Hybrid Solar Power Systems (On-grid with battery backup)

On-Grid Solar Power Systems generates DC Power from the panels and the same is converted into AC power through the inverter. This power generated during the daytime is utilized to power the captive load of the user. In case of excess power, the same is redirected to the Government Grid.

On-Grid Solar Power Systems generate and supply electricity through an inverter directly to the user’s power feed and in case of excess electricity, it redirects the power to the Government Grid. If net metering is enabled by the Government, the user will receive credit for the electricity his solar system has supplied to the mains grid. In case the solar power generated is not sufficient to serve the captive loads, the system will draw power from the grid.

Also known as Solar Grid-Tied System or Grid-tied Solar System, On-Grid Systems do not come with storage batteries and are therefore priced lesser than Off-Grid Systems. Also, these systems depend on the reference voltage provided by the grid for their operations and hence will not work when the grid is down.

Simply put, net metering is a utility billing mechanism that offers credit to residential and business customers who produce excess electricity using their solar panels and send it to the government grid. With net metering, you only pay for the electricity you use over and above what is generated by your solar panels.

However, you will have to check whether net metering facility is being offered by the government in your respective states.

If you are using an on-grid solar panel, then it will automatically shut off in the event of a blackout or shutdown. This is to avoid injuries/fatalities, to emergency responders and utility repair-people, by the solar panels that send power back to the grid.

However, if you want power availability during a blackout, then you need to go in for power backup arrangement using storage batteries (Off-Grid System).

Following are the components generally used in solar power systems.

  • Solar PV Panels
  • Array Mounting Racks
  • Solar Inverter
  • Storage Batteries (optional)
  • Charge Controllers
  • Lightening Arrestors
  • Electrical accessories and wires

The size and type of solar rooftop module depend on the following factors

  • Your present total power consumption
  • Expected future increases in power requirement
  • Weather conditions in your place
  • Power outage patterns in your location
  • Where you want to use the module. ie., home, office, commercial, factory
  • Your budgeted amount for the product

Choosing the right solar power system is a professional exercise that requires expert guidance. Get in touch with us and we can help you arrive at the right product that matches your requirements.

Yes. You can add storage batteries to your on-grid solar system as a backup arrangement. This will cost you extra.

The price of Rooftop modules depends on various factors including your total load requirements, type of solar system you opt for, site conditions and so on.

But rest assured that Korgen can offer you the most competitive prices. Please book an enquiry with us and we will get in touch with you.

Yes. You can always add additional solar panels to the system at any time to increase power generation capacity of the system but your inverter must have the requisite capacity.

Therefore, in case you anticipate increase in your energy requirements in future, you can opt for a higher capacity inverter at the time of installing your initial solar module and then add solar panels whenever you need.

Installation cost entirely depends on the site conditions. We have a base installation rate for standard installations on flat roofs. However, additional costs may accrue for tiled roofs and vertical installations.

If you are choosing an on-grid solar power system, then you will need to have a compatible switchboard and a bi-directional meter.

Without this bi-directional meter, you will not be able to get credit for the excess power you send to the Government Grid.

At Korgen, we supply best-in-class Solar Power Systems manufactured by reputed national and international brands. Following are the key advantages of using our systems.

  • Panels comply with MNRE and IEC Standards
  • 25 years Performance Warranty
  • 5 years Product Warranty
  • Excellent Low-light Performance
  • Resilience to Extreme Weathers (IP65 Protection)
  • PID Resistance Technology
  • Advanced EVA Encapsulation
  • Maximum Power Point Tracking
  • Anti-Islanding Protection
  • Remote Monitoring Facility
  • ISOT Technology to maximize solar energy usage

Depending on the brand and model you choose, we can provide the following warranty protection for solar panels.

Product Warranty - Up to 5 years

Performance Warranty - Up to 25 years

Annual service and maintenance costs are very negligible for solar power systems since there are no moving parts and in the input fuel (sunlight) is free. For optimum performance, the system only requires periodical cleaning of the panels and basic preventive maintenance. But for off-grid systems that come with storage batteries, the maintenance costs are relatively higher on account of periodical battery replacements.

Please get in touch with us to know more.

You can install a data monitoring device (data logger) to compare the actual performance with the estimated performance on a periodical basis.

Inverter plays a key role in a solar power system. It acts as an interface that converts the direct current produced by solar PV panels into stable and usable alternating current (AC).

The type of inverter used depends on the kind of solar power system you opt for. On-Grid solar power systems need high efficiency inverters for performance optimization. Off-Grid solar power systems use a different kind of inverter that can charge batteries both from solar power and grid power. The inbuilt MPPT charge controllers in high-quality inverters extract up to 30% more power from solar panels.

Mounting structures play a key role in the performance of solar systems. A sturdy structure will result in years of smooth operations as it can withstand strong winds and other natural forces. The type and orientation of the structure varies depending on multiple factors associated with the location where the system needs to be deployed.

For example, the structure for rooftop solar installation on a flat roof is completely different from the one used for slanted roofs. Height of the roofs is another major factor that determines the composition and alignment of the structure. It is advisable to have a structure made of galvanised iron since it is not only stronger than normal iron but rust proof.

Installation of a solar power system needs to be carried out with precision in order to maximize power generation. No two solar power systems are the same and therefore the installation process requires careful supervision till the end.

Solar panels must face true south direction for maximum power generation. Tilt angel of solar panels should be around 30% in India but this can vary based on the height of the installation. Solar panels must be properly grouted using anchor bolts or concrete foundation to ensure durability in rough conditions.

Inverters and batteries must be installed as close to the panels as possible in order to minimize DC transmission losses. Also, it needs to be ensured that the maximum permissible voltage is not exceeded when connecting the panels in series. There must be a minimum gap of 5mm between two solar panels to allow for any expansion in materials. The solar panels being interconnected must be of the same type (monocrystalline or polycrystalline) and same power class.

Moreover, there must not be any shade or shadow on the solar panels as this may result in formation of hotspots.

Good installation results in trouble-free long life and there are many minute details to be taken care of such as the quality of input and output wiring, reverse supply of AC voltage on the output, proper earthing, polarity of wiring, routing and casing of the PV cable etc. Therefore, it is very important to get the installation done by professionally trained technicians.

The angles are arrived at based on the latitude of the location where the panels are to be installed. Generally, the angle of tilt in South India will lie between 9 to 12 degrees and 25-30 degrees in North India. However, the angle tilt will decrease as the altitude of installation increases. This is to neutralize the impact of high-speed winds on the installation.

Keeping the solar panels clean is of utmost importance for optimal performance of the panels. Frequency of cleaning depends on the dust accumulation potential of the location where the panels are installed.

Generally, it is advisable to clean the panels at least twice a week but it would be really good if the cleaning can be done on a daily basis by using a strong water spray and then wiping the water off.

This applies only to On-Grid Solar Power Systems and not for Off-Grid Systems. You must ensure that all necessary governmental requirements for getting the bi-directional meter installed are taken care of. This process will require additional time and fees depending on the local electricity utility.

However, in case there are any subsidy scheme offered by the respective governments, additional documentation may be required to avail the subsidy.

Product sold by Korgen are all eligible for such subsidy schemes. Please visit the MNRE website to know more about this.

The return on investment takes place in about 4 to 4.5 years. Then it is all earnings for the rest of the system life.

By using a solar system, you not only generate your own power but also positively support the environment by reducing your carbon footprint.

Approximately around 10 sq.m or 120 sq.ft area is required to set up 1kWp grid connected rooftop solar system.




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