Home Water Treatment-Overview

Book an Enquiry


Request A Water Test

Choose an analysis package and our executives will collect the watersample/s right from your doorstep.

Water Treatment Plants and Filtration Systems

Raw Water treatment is a process that modifies and improves the quality of water to make it suitable for specific uses. viz., Residential, commercial and industrial uses. Water treatment and filtration processes can significantly vary based on the raw water characteristics and the quality requirements of the output water.

Raw water treatment plants alter the properties of water by removing contaminants or reducing their concentration so that the treated water becomes fit for the intended end-use. Water treatment and filtration systems are designed, based on the source and characteristics of the water, for removal or reduction of specific constituents / contaminants present in the water and deliver the guaranteed output quality as per WHO (World Health Organization) standards or the local standards or the specific standards as required by the customers / client organizations.

Types of Water Treatment Methodologies

Constituents Treatment Processes
Turbidity, Odour, Colour and Suspended Particles Coagulation-Flocculation, Sedimentation, Filtration
Dissolved Inorganics – Dissolved Solids.
Eg.Ca, Mg, Na, Cl, Iron
Aeration-Filtration, Softening, Hyper Filtration
(Membranes), Demineralization, Distillation
Dissolved Organic Compounds Eg. VOCs, Pesticides Adsorption, Membrane Filtration
Microorganisms (Eg. Bacteria, Virus, Protozoa etc) Sedimentation, Membrane Filtration, Disinfection

Types of Water Treatment Plants and Equipment

Water treatment equipment can be broadly classified as Point-of-Entry (POE) and Point-of-Use (POU) plants. The point-of-entry systems are installed near the water source (eg., well, bore well, sump, overhead tank) and are generally bigger in size and treats the water at source. Point-of-use systems are compact units that are installed inside the premises to treat water coming from specific taps in kitchens, bathrooms and other utility areas.

The selection of plant depends on various factors including water characteristics, site conditions and customer requirements.

Purpose of Raw Water Treatment

The primary purpose of water treatment is to make the water suitable for general utility purposes, consumption, other commercial and industrial uses.

At a residential / community level, water is treated to reduce or remove sediments, turbidity, excessive color, odour, unpleasant taste, dissolved solids-minerals, organics, chemicals and pathogenic microorganisms etc. in addition to making it suitable for construction purpose.

In the commercial segment, apart from the above mentioned uses, water is also treated for landscaping, cafeterias, recreations, HVAC systems, medical and pharmaceutical purposes. Industrial Water Treatment mainly comprises boiler water treatment, cooling water treatment, water treatment for core manufacturing processes and tertiary treatment of sewage and industrial wastewater. Learn more.

Process Automation

While in terms of efficacy, a manual water treatment system is as good as an automated one if operated and maintained properly, critical process automation significantly optimizes product performance, reduces the operational burden and minimizes the possibility of human errors in addition to capturing critical data. Long-established automation choices such as PLC, ADCS, SCADA, HMI, RCM and the latest cloud-supported tools can be helpful in fully automating and monitoring the treatment process.

How KORGEN fits in?

As one of the leading water treatment companies with full-fledged operations in Chennai,Tamil Nadu and key cities across South India, KORGEN is a vertically integrated and professionally managed organization led by a dynamic team of qualified technocrats and industry veterans.

With a combined experience of over five decades, in designing, manufacturing, erecting and commissioning water treatment plants and filtration systems, we are known for our formula-driven designs, cutting-edge technologies, wide array of top-notch products, seamless project execution capabilities and efficient after sales service.

Apart from standard product modules sourced from reputed national and international brands, we also design, manufacture and supply a wide range of manual, semi-automatic and fully automatic water treatment systems and filtration plants customized for a wide spectrum of applications and segments on turnkey basis. Our systems are designed to be cost-effective and we use high quality material and components for durability, consistent performance and lower maintenance costs on account of maximized operational efficiencies. We also provide reliable, flexible and best-in-class solutions with scalable and modular architectures to fully automate the plant operations.

We help our customers choose the right water treatment technology and equipment by carrying out a thorough Water Analysis and Site Evaluation Study. This methodical approach and our deep domain expertise give our systems a near-zero failure rate.

KORGEN is a completely system-driven organization and all our processes are governed by professional systems and ethical standards. This helps us offer superior products, robust preventive maintenance support and timely service to our customers.

For a quick interaction with our water experts, Book an Enquiry now or call us @ 72990 66660.

Pressure Sand Filters And Multimedia Filtration Plants

KORGEN is one of the leading suppliers of a wide range of Pressure Sand Filters and Multimedia Water Filtration Plants in Chennai and select cities in Tamil Nadu.

While we have a wide range of pre-engineered and standard Sand Filters and Multimedia Filters, we also design, manufacture and supply high-volume Filtration Plants custom-built for specific requirements.

Our technical experts analyse the water characteristics such as the level of suspended solids and turbidity in the feed water, other related parameters, evaluates the site conditions and specific customer requirements before deciding on the specifications of the filtration plant. Even our standard modules of Water Filters are selected / recommended based on key parameters of the feed water. The performance consistency and durability of a filtration plant depend on key engineering factors such as Unit Volume, Material of Construction, Filter Media Composition besides complying with the prescribed usage and maintenance procedures.

Starting from water analysis to the selection of the right filtration plant that meets your requirements, KORGEN will closely guide you, at every stage, to take informed buying decisions.

After erecting and commissioning the filtration plants, we also offer various types of after-sales service packages at very competitive rates to make sure that the Water Filtration Plants deliver optimal performance and our customers get the maximum value out of their investment.

KORGEN Pressure Sand Filters and Multimedia Filtration Plants are manufactured / sourced under stringent quality control norms and tested to international quality standards in every aspect.

Special Treatment for High Turbid Water

In addition to Filtration Plants, KORGEN also designs and installs special mechanical devices such as clarifiers that are used as pre-treatment units for treating water with very high levels of turbidity, suspended solids and colloidal particles. Eg. Surface water sources like rivers, streams and sea. These clarifiers help in the settlement of colloidal particles by providing a larger surface area. Accessories like flash mixers, flocculators and chemical feeding systems are offered as part of the system.

Types of Clarifiers

Primary Clarifiers Lamella Plate Vertical Clarifiers
Secondary Clarifiers Horizontal Plate Clarifiers
Solids Contact Clarifiers

Types of Korgen Pressure Sand Filters and Filtration Plants

  • Standard Pressure Sand Filters and Multimedia Filters for homes and individual houses
  • Custom-built high-volume Multimedia Water Filtration Plants for apartments and commercial establishments
  • Industrial Pressure Sand Filtration Plants and Multimedia Filters

Our range of Sand Filtration Plants starts from a compact 750 LPH (Litres Per Hour) model and goes up to 1000m3 LPD (Litres per day) plant.

Based on customer requirements, we supply manual, semi-automatic and fully automatic pressure sand filters and multimedia filtration plants made up of Fibre Reinforced Polymer (FRP) / Composite Vessels, Mild Steel with corrosion-proof Rubber Lining inside and epoxy-coating outside (MSRLEC) and high-grade Stainless Steel (SS).

Advanced and proven internal strainers used in Korgen Water Filtration and Treatment Plants ensure even distribution of the feed water into the media bed and proper collection of treated water thereafter.

Automation of these Water Filtration Systems is achieved using semi and fully automatic multiport valves along with control panels that house process logic controllers. Multiport valves make the water filtration process highly user-friendly due to its single-point operations, controls and seal capability of the valves prevents internal port leaks. In case of higher flowrates, manual valves are used with complete support piping for smooth operations.

Variants of Water Filtration Plants

KORGEN manufactures and supplies a wide range of vertical and horizontal water filtration plants (Stand-alone and in series) based on specific applications and site conditions such as

  • Pressure Sand Filter (PSF)
  • Rapid Water Filtration Units (RWFU)
  • Multimedia (Depth) Filtration Plants (MFP)
  • Dual Media Filters (DMF)
  • Side Stream Filters (SSF)
  • Valve-less Gravity Sand Filters (GSF)

Advantages of Korgen Pressure Sand Filters and Multimedia Filtration Plants

  • Designed based on established formula and time-tested norms that maximize filtration area
  • Unique multimedia combination ensures efficient filtration of physical impurities
  • Customized Units based on the water characteristics and site conditions
  • Effectively removes suspended solids, turbidity and other physical impurities
  • Minimal pressure-drop across the filter bed
  • Delivers consistent performance at optimal efficiency over the long term
  • High quality internals and components ensure long life and durability
  • Lesser power consumption and user-friendly maintenance processes
  • Comes with 1 year all-inclusive warranty and special extended 5-years vessel warranty*
  • Additional accessories to facilitate easier operations and monitor various performance parameters. Eg. Digital Flow Meters, Totalizers, Pressure Gauges, Control Panels, Portable Test Kits etc.
  • Wide range of models (Manual, Semi-automatic, Fully Automatic) that are competitively priced
  • Prompt and efficient after-sales service network
  • * For select standard products. Conditions apply.
Know more about Sand Filters and Multimedia Filtration

Technology and Process Description

Maintenance of Filtration Plants

Product Features and Technical Information

General Applications

Clarifiers for High Turbid Water

Technology and Process Description

Pressure Sand Filters and Multimedia Filters are only slightly different from each other with different media composition used for various types of water filtration purposes. While pressure sand filters are used only to filter excessive physical impurities (Turbidity, Suspended Solids etc) from water, multimedia filters - using depth filtration technology (DFT) - combine the functional advantages of pressure sand filters and activated carbon filters thereby removing odour, colour, residual chlorine and VOCs in addition to physical contaminants

Media Composition

Pressure Sand Filters Multimedia Filters
Graded Quartz Sand Graded Quartz Sand
Sieved Fine White Sand Sieved Fine White Sand
Pebbles | Silex Activated Carbon Granules of high IV
Pebbles | Silex

When water is pumped through the Pressure Sand Filter or Multimedia Filtration plants, the multi-layered media effectively filters excessive turbidity, suspended solids, bad odour, colour, residual chlorine and to a certain extent VOCs (Volatile Organic Compounds) present in the water. Besides, the media composition also enhances the dirt holding capacity of the water filtration plants with minimal pressure drop across the media bed at higher velocities.

In the event of very high level of suspended solids or in high volume filtration plants, measured dosing of coagulants and flocculants are used to enhance the efficiency of the filtration plant.

Correct composition and alignment of the media helps in ensuring even distribution of the filtration load (phased removal of physical contaminants throughout the filter bed) thus allowing much longer ‘Filter Run Times’. It also facilitates easy maintenance of the Filtration Plant resulting in longer life of the media.

Click here to see the Pictorial Illustration

Maintenance of Filtration Plants

Backwash: The accumulated physical and other impurities need to be removed from the media on a periodical basis to ensure that the Filters always deliver optimal performance. The impurities trapped in the media are removed by backwash process in which the direction of the water flow is reversed. In this backwash process, the reversed water flow agitates and loosens the media bed and all the impurities are flushed out through the backwash outlet-valve.

Since the water that is used for backwashing will be having high concentration of physical impurities, the same can be again treated and reused to avoid environmental issues.

Rinse: Once the backwash operation is completed, rinsing should be done to reset the media and make it ready for the next filtration cycle.

These maintenance operations need to be performed at prescribed intervals for optimal performance and longer life of the filtration plants.

Air Scouring is required in high volume water filtration plants to aid and complete the backwashing and rinsing processes.

Click here to see the Pictorial Illustration

Product Features and Technical Information of Filtration Plants

Unless warranted under special conditions, Pressure Sand Filters and Multimedia Filtration Plants generally comprise the following major parts

  • iVessel
  • iiValve
  • iiiMedia

The basic design and dimensions of the Pressure Sand Filters and Multimedia Filtrations Plants are highly formula-driven and should be primarily based on the following factors.

  • i.  Suspended Solids and Turbidity in the Feed Water
  • ii. Other related feed water characteristics
  • iii.Hourly Flow Rate (LPH) required
  • iv.Volume of water to be filtered per day
  • v. Site Conditions and end use applications

General Applications of Pressure Sand Filters and Multimedia Filtration Plants

  • i.   Used to reduce turbidity and suspended solids in municipal and corporation supplied water
  • ii.  Used for high-turbid open well and bore well waters
  • iii. Used as pre-treatment units for softeners, DM Units and RO Plants
  • iv. Used in the recycling plants for process water in industries
  • v.  Used for filtration of cooling tower water
  • vi. Used for recirculation of swimming pool water
  • vii.Used as tertiary filtration units for Sewage Treatment and Effluent Treatment Plants

Caution: Output water from these filtration plants can be used for consumption only if the TDS, Hardness and other related parameters are within the prescribed limits. Or else, further treatment may be warranted to make this water potable.

Clarifiers For High Turbid Water

Clarifiers are required when water contains excessive turbidity, suspended solids and colloidal particles. In the treatment scheme, it acts as a pre-treatment to the Filtration Plants and is also a crucial part of Sewage Treatment Plants. Generally, surface water sources such as rivers, streams and seas will have higher concentration of such physical impurities.

Most of the clarifier tanks are of circular or rectangular design. Various types of clarifiers in a variety of sizes are available, as detailed here below, based on specific requirements and site conditions.

Clarifiers operate based on the principle of gravity-driven settling. Clarifiers are designed to reduce the velocity of the influent water and distribute it uniformly in a radial manner in all directions. This provides maximum settling time resulting in the efficient separation of settled particles from water.

The heavier solids and particles settle in the clarifier due to the quiescent conditions provided in the clarification zone. The settled solids are then swept to the centre well provided for collection of sludge with the help of moving scraper blades. The clear water overflows via a launder provided at the top portion.

Generally, the settling process is expedited by the addition of measured dosing of coagulants and flocculation agents. These coagulants neutralize the charges and agglomerates the suspended solids leading to formation of micro-flocs. The polyelectrolytes bring these micro-flocs together and the larger floc settles down easily.

High Rate Solids Contact Clarifiers ensure a higher clarity in water quality and greater tolerance to variations in inlet conditions. Since there are no major moving parts, it is highly maintenance-friendly and is designed to work totally on gravity.

Lamella Clarifier

Lamella clarifier technology is a versatile clarification-cum-separation arrangement in which solids, oil and grease can be removed from the feed water. The design of lamella utilize a series of parallel plates that maintain a laminar, stable flow in between the plates. The plates are provided with a mirror finish to attract and settle the flocculated particles. The particles accumulate on the surface and slide down due to gravity. The sludge accumulates at the bottom cone. Lamella clarifiers are compact and ideal for high suspended solids and chemical-based sludge and occupies only 1/5th of the space required by conventional clarifiers.




Integrated Solutions in water treatment and sewage treatment


water treatment and sewage treatment Technologies


water treatment and sewage treatment design

In-house Design

Customized water treatment and sewage treatment solutions


water treatment and sewage treatment plants Manufacturing in chennai

Good Manufacturing

water treatment and sewage treatment project in chennai

Established Project Execution Credentials

Partnership with best water treatment brands

Partnership with Best-in-Class Technology Companies

Experienced water and sewage treatment company

50+ Years of Combined Experience

After-Sales service for water and sewage treatment plants

Efficient After-Sales Team

Competitive Prices for water and sewage treatment plants

Competitive Pricing

Find out more

Value Adds Offered*

  • Trusted Brands
  • Dedicated Service Helpline
  • Holiday Service
  • Comprehensive Warranty
  • Special Extended Warranty
  • Free Installation
  • Multiple Payment Option
  • Easy EMIs
  • Superfast Delivery

* Offered for select products and models. Conditions Apply

Copyright © 2014-24 KORGEN Tech Systems. All Rights Reserved | KORGEN is a Registered Trademark