Zero Liquid Discharge System

Fully integrated ZLD packages for total elimination of liquid effluent discharge
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Industrial Products : Water and Waste Solutions

Zero Liquid Discharge (ZLD) systems are high-recovery treatment solutions designed to eliminate liquid effluent by converting wastewater into reusable water and dry, disposable solids.

These systems combine pre-treatment, multi-effect evaporation, forced circulation crystallisation, and drying technologies to eliminate all liquid discharge. Customised for industries under strict regulatory frameworks or in water-scarce regions, ZLD helps achieve environmental excellence and long-term water security while enabling cost recovery through water reuse.

Our products
Physico Chemical Treatment
Biological Treatment (Anaerobic & Aerobic)
Special Media Filter
Advance Oxidation
ZLD Products
Product
Oil Removing System
Industrial Project Range
Standard Product Range

Physico Chemical Treatment

Physical and chemical methods for water purification and treatment processes

Salient Features

  • Effective removal of colloidal and suspended particles using coagulants and flocculants
  • Enhanced solid-liquid separation through floc formation and improved settling properties
  • Tube settlers to increase settling capacity in rectangular clarifiers
  • Dissolved Air Flotation (DAF) systems for removal of suspended solids and oil
  • Clarifiers for efficient sedimentation and separation of solid particulates
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Anaerobic Treatment

Transforming organic waste into renewable energy

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Aerobic Treatment

Efficient oxygen-driven treatment for cleaner wastewater

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Special Media Filter

Specialised media filtration for colour, odour, and complex organics removal

Salient Features

  • Removal of specific and complex organic constituents
  • Colour and odour removal
  • Reuse of media for multiple cycles
  • Enhance membrane life by reducing fouling, cleaning frequency and operating costs
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Advance Oxidation

Powerful oxidation technology for persistent pollutant removal

Salient Features

  • Effective in degrading a wide range of organic pollutants
  • Potential for complete mineralisation of pollutants
  • Can treat pollutants that are resistant to conventional methods
  • Can reduce toxicity and improve biodegradability
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Agitated Thin Film Dryer (ATFD)

An Agitated Thin Film Dryer (ATFD) is a specialised thermal evaporation system designed to concentrate solids, viscous, or heat-sensitive liquids

Salient Features

  • Handles high-viscosity and heat-sensitive materials
  • Produces dry solids or powder from liquid/slurry feed
  • Operates under vacuum or atmospheric conditions
  • Commonly used in zero liquid discharge (ZLD) systems, pharma, chemicals, and effluent treatment
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Stripper

A stripper is a mass transfer device used in water and wastewater treatment to remove volatile contaminants, such as ammonia, carbon dioxide, or hydrogen sulphide, by transferring them from the liquid phase to the gas phase using air or steam

Salient Features

  • Removes volatile gases (e.g., NH₃, CO₂, H₂S) from water
  • Uses counter-current air or steam flow for efficient stripping
  • Typically packed or tray-based tower design
  • Operates under ambient or elevated temperatures
  • Used in processes like de-gassing, and removal of ammonia, volatile compounds
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SteMNovas+

An efficient thermal solution for zero liquid discharge and high-recovery wastewater treatment.

Salient Features

  • 40% less steam requirement
  • Higher uptime of equipment
  • Compact design
  • Zero make-up water requirement for MEE cooling tower
  • Minimum cleaning-in-plant needed
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VapoNovae+

An energy-efficient solution for sustainable effluent concentration and zero liquid discharge

Salient Features

  • 40% energy savings
  • 40% lesser footprint
  • Lower operating cost
  • Reduced CO₂ emissions
  • Eco-friendly
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Electrodialysis Reversal (EDR)

The Electrodialysis Reversal (EDR) technology uses electric current to move dissolved salts

Salient Features

  • Removes dissolved salts and ions using ion-exchange membranes
  • Periodic polarity reversal reduces scaling and extends membrane life
  • Operates at lower pressures than RO
  • Energy-efficient for low to moderate TDS water (typically <5,000 ppm)
  • Produces high recovery rates with minimal chemical cleaning
  • Suitable for brackish water, municipal reuse, and industrial applications
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Advanced Reverse Osmosis (ARO)

Maximising water and salt recovery with advanced RO technology

Salient Features

  • Higher recovery rates (up to 85–90%) compared to conventional RO
  • Incorporates energy recovery devices (ERDs) for reduced power usage
  • Uses speciality membranes for higher salt recovery
  • Can be integrated with existing desalination or wastewater recovery plants
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Oil Removing System

Advanced oil-water separation for compliant and efficient wastewater treatment

Salient Features

  • Removes free and dispersed oil effectively
  • Technologies include API separators, DAF (Dissolved Air Flotation), coalescers, and oil skimmers
  • Protects downstream treatment processes and equipment
  • Reduces chemical oxygen demand (COD) and improves water clarity
  • Compact, modular, and easy to maintain
  • Compliant with environmental discharge regulations
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Special Media Filter

Targeted Removal of Complex Organics, Colour, and Odour

Salient Features

  • Removal of specific and complex organic constituents
  • Colour and odour removal
  • Reuse of media for multiple cycles
  • Enhances membrane life by reducing fouling, cleaning frequency and operating costs
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BioSONR

Advanced single-tank solution for simultaneous organic and nitrogen removal

Salient Features

  • Facilitates the growth of organic and nitrogen removal microbial consortia in a single tank reactor
  • Supports compliance with stringent discharge standards
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SBR-Based

Time-sequenced biological treatment with controlled nutrient removal

Salient Features

  • All treatment phases in a single compact tank
  • Time-based control enables precise process management
  • Effective nutrient removal with low sludge generation
  • Handles variable flows without affecting performance
  • Automated operation with PLC/SCADA integration
  • Modular and scalable for phased capacity addition
  • Minimal operator intervention and ease of maintenance
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Membrane Bioreactor (MBR) based

High-quality recycled water in a compact, odour-free system

Salient Features

  • Delivers high-quality, reusable treated water
  • Compact design suitable for space-constrained sites
  • Fully enclosed system ensures odour-free operation
  • Enables remote monitoring and automated control
  • Generates minimal sludge for easy disposal
  • Modular setup allows easy future expansion
  • Optimised for low energy consumption
  • Low sludge generation reduces handling and disposal costs
  • Modular design allows scalable capacity expansion
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MBBR-Based

A flexible, low-footprint solution for efficient and stable biological treatment.

Salient Features

  • Consistent performance under fluctuating loads
  • Compact design with reduced civil footprint
  • Low-maintenance and odour-free operation
  • Fast biological startup and process stability
  • Lower sludge generation and handling costs
  • Modular configuration for easy scalability
  • Energy-efficient with optimised aeration
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Trickling Filter-Based

Energy-efficient fixed-film biological treatment

Salient Features

  • Reliable performance with simple process design
  • Low energy requirement due to passive aeration
  • Minimal maintenance and operator dependency
  • Durable, corrosion-resistant media with long life
  • Effective under consistent organic load conditions
  • Economical for small to mid-sized treatment needs
  • Easily combined with tertiary treatment for reuse standards
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Activated Sludge Process (ASP)

Reliable, large-scale biological wastewater treatment

Salient Features

  • Time-tested process with dependable treatment efficiency
  • Suitable for large volumes and steady inflows
  • Produces high-quality effluent compliant with discharge norms
  • Flexible design adaptable to site-specific requirements
  • Low capital cost per unit of treated water
  • Easy integration with tertiary and reuse systems
  • Simple operation with proven process control strategies
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Port D-Sal

Quick-install containerised systems providing dependable desalination with minimal setup and maintenance

Salient Features

  • 8” FRP membrane housing with 1200 PSIG (80 bar) rating
  • Sea water TFC polyamide RO membranes
  • Duplex 2205 stainless-steel high-pressure piping
  • Schedule 40 PVC low-pressure piping
  • Variable frequency drive (VFD) for high-pressure pump
  • Victaulic cleaning connections
  • High-pressure multistage centrifugal pump in duplex material
  • FRP local control box
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Nanofiltration

Reliable nanofiltration systems with selective ion retention to deliver superior water quality and operational efficiency

Salient Features

  • Retains divalent ions (e.g., Ca²⁺, Mg²⁺, SO₄²⁻) while allowing monovalent ions (e.g., Na⁺, Cl⁻) to pass
  • Removes hardness, organic matter, and pathogens
  • Operates at moderate pressures (4–30 bar)
  • Ideal for water softening, food & beverages, and dye recovery
  • Produces high-quality water with lower salt rejection
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Ultra Pure Water (UPW)

Delivering ultra-pure water for the most critical industrial and laboratory applications with unmatched precision

Salient Features

  • Produces water with <1 µS/cm conductivity or better
  • Multi-stage purification: RO, EDI, UV, and filtration
  • Removes ions, organics, particles, and microbes
  • High reliability and consistent quality
  • Fully automated with monitoring and controls
  • Suitable for semiconductor, pharma, and lab use
  • Compact design with low operational cost
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Ultrafiltration

Compact, modular UF systems that efficiently remove turbidity, bacteria, and high-molecular contaminants

Salient Features

  • Removes turbidity, bacteria, and some viruses
  • Pore size ~0.01 microns
  • Operates at low pressure
  • Provides consistent filtrate quality
  • Compact and modular system design
  • Often used as pre-treatment for RO systems or direct filtration
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Low Pressure Condensate Polishing Unit

Cost-effective CPCU systems designed to remove impurities and enhance operational reliability in low-pressure setups

Salient Features

  • Removes ionic and particulate contaminants
  • Uses ion exchange resins or filtration media
  • Operates at lower temperatures and pressures
  • Enhances equipment life and performance
  • Simple design with easy maintenance
  • Cost-effective for low-pressure applications
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High-Pressure Condensate Polishing Unit (CPCU)

High-performance CPCU systems ensuring ultra-pure condensate, reduced corrosion, and extended turbine and boiler life

Salient Features

  • Uses mixed-bed ion exchange resins
  • Withstands high temperature and pressure
  • Protects turbines and boilers from scaling/corrosion
  • Equipped with automatic regeneration and monitoring systems
  • Compact and modular design
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RO Plants

Innovative reverse osmosis technology ensuring unmatched water quality, process reliability, and sustainability

Salient Features

  • Removes up to 99% of dissolved salts and contaminants
  • Uses semi-permeable membranes under high pressure
  • Effective against TDS, bacteria, and heavy metals
  • Energy-efficient and scalable design
  • Includes pre-treatment and post-treatment stages
  • Suitable for brackish, tap, and seawater sources
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Specialised Ion Exchange Removal

Customised resin solutions that selectively eliminate impurities like silica and nitrates, ensuring consistent high-purity output

Salient Features

  • Selectively removes specific ions (e.g., silica, nitrates, heavy metals)
  • Uses tailor-made or mixed resins
  • Ensures high-purity water for critical applications
  • Enhances the performance of downstream equipment
  • Regenerable and customisable
  • Ideal for power plants, electronics, and pharmaceutical industries
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Dealkaliser

Compact, reliable dealkalisation systems that minimise blowdown, prevent corrosion, and improve steam quality

Salient Features

  • Removes bicarbonate, carbonate, and sulfate ions
  • Uses anion exchange resin
  • Reduces CO₂ formation and boiler corrosion
  • Lowers boiler blowdown frequency
  • Regenerates with common salt (NaCl)
  • Simple operation and compact design
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Softening Plant

Delivers consistent soft water by removing hardness-causing agents, optimising process performance and reliability

Salient Features

  • Uses cation exchange resin
  • Prevents scaling in boilers, pipelines, and equipment
  • Regenerates with common salt (NaCl)
  • Removes calcium and magnesium ions
  • Easy to operate and maintain
  • Cost-effective for hardness control
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Dimeralisation Plant (DM)

Engineered for high-purity water through advanced ion exchange, delivering consistent quality and operational efficiency

Salient Features

  • Resins with high resistance, longer life, high exchange capacities & lower chemical consumption
  • Low maintenance and easy installation
  • Cost-effective standard models
  • Advanced software used for optimal selection and configuration
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Side Stream Filters

Continuous filtration that enhances system efficiency, protects equipment, and maintains clean water without process interruption

Salient Features

  • Operates independently of main flow (bypass configuration)
  • Removes suspended solids, scale, and biological contaminants
  • Improves efficiency and life of cooling systems and heat exchangers
  • Reduces maintenance, blowdown, and chemical usage
  • Can use media, cartridge, bag, or automatic self-cleaning filters
  • Easy installation and minimal downtime
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Gravity Filter

Natural filtration powered by gravity, delivering continuous, reliable, and cost-effective water purification performance

Salient Features

  • Removes suspended solids and turbidity
  • Typically uses multi-layer media (sand, gravel, anthracite)
  • Simple design with low operational cost
  • Requires periodic backwashing to clean the media
  • Suitable for large-scale, continuous filtration
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Pressurised Filters (DMF & ACF)

Efficient pressurised filters combining dual-media and activated carbon technologies for superior water clarity and quality

Salient Features

  • DMF: Removes turbidity and suspended particles
  • ACF: Removes chlorine, organics, taste, and odour
  • Operates under pressure for high flow rates
  • Compact and enclosed design
  • Easy backwashing and low maintenance
  • Used as pre-treatment in RO, softening, and demineralisation systems
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Clarifiers

Clarifiers are settling tanks used in water and wastewater treatment to separate solid particles from liquids

Salient Features

  • Removes suspended solids through sedimentation
  • Can be circular or rectangular in design, used as primary or secondary treatment​
  • Low energy requirement and easy to operate​
  • Enhances efficiency of downstream filtration systems​
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atoM

Modular MBR technology for compact, high-quality sewage treatment and reuse

Salient Features

  • Completely modularised & compact
  • 55% area space reduction
  • 40% lesser height for basement installation (single basement installation)
  • Completely automated operations
  • Consistent high-quality treated water
  • Aesthetically new age design
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SeqtreaT

Intelligent batch treatment for efficient domestic wastewater management

Salient Features

  • Novel decanting mechanism developed by Thermax
  • Compact, easy to operate & scalable
  • Nitrogen & phosphorus removal capability
  • Treated sewage suitable for recycling & reuse
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BioCask

First-of-its-kind unidirectional circular-bed fluidisation pattern

Salient Features

  • Skid-mounted; quick and easy installation
  • Pre-engineered; low cost & fast delivery
  • Achieves < 5 TSS mg/l without coagulant, flocculent
  • Achieves < 5 BOD mg/l without UF membrane
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CuBe

Completely modularised sewage treatment plant

Salient Features

  • Completely modularised
  • Higher nutrient removal
  • Completely automated operations
  • Consistent high-quality treated water
  • 50% installation area reduction
  • Up to 45% lesser height; suitable for single basement installation
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BioFilter Pro

Compact and hybrid side-stream MBR

Salient Features

  • Prefabricated, ready-to-install and simple to operate
  • Ease of operation
  • No aeration required
  • Sludge removal on a fortnightly basis
  • Odourless operations
  • Compact design & aesthetic appealing
  • Low operational & maintenance cost
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FABx

Media-based aerobic treatment technology for high-rate, stable biological performance in a compact design

Salient Features

  • Skid Mounted; Quick and easy installation
  • Pre-engineered; Low cost & fast delivery
  • Achieves < 5 TSS mg/l without coagulant, flocculent
  • Achieves < 5 BOD mg/l without UF membrane
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Automated Softeners

Compact and flexible water softening systems

Salient Features

  • Available in FRP/GRP vessels upto 42” diameter
  • Sleek MS construction with single-valve operation
  • Rugged packed bed design
  • Flexibility resin volumes configurations
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Containerised Plants

Compact, plug-and-play water treatment solutions

Salient Features

  • Pure mobility
  • Quick installation
  • PLC-mounted panel for auto operation
  • Minimal site/civil work
  • Compact and neat installation
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Demineralisation Plant (DM)

Reliable demineralisation solutions for high-purity water

Salient Features

  • High-performance resins offering longer life, superior exchange capacity, and reduced chemical consumption
  • Low maintenance & easy installation
  • Cost-effective standard models
  • Advanced software used for optimal selection and configuration
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Klarimax

Compact solution for effective removal of suspended solids from surface water

Salient Features

  • Lower power consumption
  • Compact design
  • Minimal civil works (only foundation)
  • Standardised design for faster delivery and installation
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PuriSmart

Advanced automatic water filtration and softening system

Salient Features

  • Generates soft water through automated operation
  • Compact, skid-mounted design for easy installation
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Digilite

Compact design with built-in automation and real-time monitoring

Salient Features

  • Compact; skid mounted
  • Programmable
  • Data-logging possible
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E Series RO

Compact and modularised reverse osmosis plant

Salient Features

  • End-to-End Solution with Skid-Mounted Modularised Plant
  • Compact design
  • Plug-and-play
  • Easy maintenance and access
  • Remote monitoring enabled (Optional)
  • Lower water losses filter backwash
  • Ease of operation
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LoFlo RO

Engineered for efficiency, designed for everyday use

Salient Features

  • Compact & modular
  • Easy installation, operation and servicing
  • Online product water quality monitoring
  • Automation options available
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SIRO

Tailored RO excellence, driven by technology

Salient Features

  • Online water quality monitoring
  • Compact & modular
  • Membrane & pump protection system
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eFlo

Compact and modularised ultrafiltration plant

Salient Features

  • Online water quality monitoring
  • Compact & modular
  • Membrane & pump protection system
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Registered Office Address

D-13, MIDC Industrial Area,
R. D. Aga Road, Chinchwad,
Pune 411019, Maharashtra, India

Corporate Office Address

Thermax Limited
Thermax House,
14 Mumbai-Pune Road, Wakdewadi,
Pune 411003, Maharashtra, India

Corporate Identity Number

L29299PN1980PLC022787

Toll Free Number

1800-209-0115

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