Premium Dissolved Air Flotation (DAF) Systems for Wastewater Treatment

India's Trusted DAF System Manufacturer for Industrial Wastewater Challenges

High oil and grease levels. Rising BOD/TSS in treated effluent. Compliance notices from the pollution control board. If any of these sound familiar, the issue usually isn't your treatment plant as a whole — it's a missing or underperforming primary separation stage.

At Trity Environ Solutions, we manufacture high-efficiency Dissolved Air Flotation (DAF) systems specifically engineered for Indian industrial conditions. Whether you're processing food effluent, refinery wastewater, or municipal sewage, our DAF units remove suspended solids, fats, oils, and greases at the front end — so the rest of your treatment chain doesn't have to carry that load. ISO 9001:2015 certified, India-manufactured, and supported by a dedicated service team across the country.

What Is a Dissolved Air Flotation System?

A Dissolved Air Flotation system is a water treatment process that removes suspended solids, oils, fats, and other light-density contaminants from wastewater by using microscopic air bubbles — not filters, not gravity settling alone. Here's the core idea: when millions of tiny air bubbles attach to suspended particles in the water, they reduce the effective density of those particles and carry them to the surface as a floating sludge layer (called "float"), which is then skimmed off continuously.

What makes DAF particularly effective is its speed and its ability to handle contaminants that conventional clarifiers struggle with — especially emulsified oils, light solids, and biological floc. In most applications, a well-designed DAF system for wastewater treatment achieves over 90–95% removal of TSS, FOG (fats, oils, and greases), and BOD in the primary treatment stage.

Unlike slow-settling clarifiers, a DAF unit processes large volumes in a compact footprint, making it the preferred choice for space-constrained industrial plants.

Key Features of Our DAF Systems

• Micro-bubble saturation system — generates uniform 20–80 micron bubbles at controlled pressure for maximum particle adhesion and float formation
• Auto surface skimmer mechanism — continuously removes the float layer without interrupting flow, ensuring stable effluent quality around the clock
• Coagulation and flocculation dosing integration — inline chemical dosing provision for coagulant and polymer to enhance separation of fine and emulsified particles
• Stainless steel / mild steel construction — material selection based on effluent chemistry; SS 304/316 for corrosive or food-grade applications
• Adjustable recycle ratio — operator-controlled pressurised recycle flow for fine-tuning separation performance across varying feed loads
• Compact rectangular or circular tank design — available in both configurations to suit plant layout and hydraulic requirements
• Variable capacity range — systems designed from 5 m³/hr to 500+ m³/hr; custom sizing for large industrial and municipal applications
• Low sludge volume output — float sludge is significantly drier than conventional clarifier sludge, reducing downstream sludge handling costs
• Simple, low-maintenance operation — minimal moving parts, automated controls, and easy access for routine inspection and cleaning

Benefits That Go Straight to Your Bottom Line

Dramatically better effluent quality

Our DAF systems consistently achieve 90–95% reduction in TSS and FOG, and significant BOD reduction helping your facility produce cleaner discharge before it even reaches the biological treatment stage. That means less load on your effluent treatment plant, better performance overall, and far fewer compliance headaches.

Lower operational costs downstream

When you remove the bulk of solids and oils at the primary stage, your biological treatment units, filtration systems, and chemical dosing requirements all reduce proportionally. Over a year of operations, that's a measurable cost saving.

Faster compliance, fewer penalties

Industries dealing with PCB show-cause notices or failed effluent quality audits typically have a primary treatment gap. Installing the right oil and grease removal system upfront is often the single most impactful correction a plant can make.

Compact design, flexible installation

DAF units require significantly less civil area than equivalent-capacity sedimentation tanks. For brownfield expansions or space-constrained plants, this is a practical advantage most engineers appreciate quickly.

Reduced sludge handling effort

The float produced by a DAF system contains much less water than gravity sludge, which means lower volumes to handle, lower transport costs, and easier downstream dewatering.

How a DAF System Works — Step by Step

1. Influent Inlet: Wastewater enters the DAF tank after coagulation and flocculation chemical treatment that destabilises suspended particles and promotes micro-floc formation.
2. Pressurised Recycle Saturation: A portion of the clarified effluent is recycled, pressurised to 4–6 bar, and saturated with dissolved air in a dedicated pressure vessel (saturator).
3. Release & Bubble Formation: The saturated recycle stream is released back into the DAF tank at atmospheric pressure. The sudden pressure drop causes dissolved air to come out of solution as millions of microscopic bubbles (20–80 microns).
4. Bubble-Particle Attachment: These micro-bubbles attach to floc particles, suspended solids, and oil droplets in the contact zone, reducing their effective density and causing them to rise rapidly to the surface.
5. Float Skimming: The accumulated float layer containing solids, oils, and fats is continuously removed from the surface by a motor-driven skimmer into a float sludge collection trough.
6. Clarified Effluent Outlet: Treated water exits from the bottom or side of the tank as clarified effluent, ready for the next treatment stage biological treatment, filtration, or discharge depending on your process design.

The entire process is continuous, automated, and designed for unattended operation during normal conditions.

Industries We Serve

Our industrial wastewater treatment equipment is installed across a wide range of sectors in India. DAF systems are particularly critical wherever wastewater carries oils, fats, fibres, or fine suspended solids that resist gravity settling.

Food & Beverage Processing — Edible oil refineries, dairy plants, slaughterhouses, fish processing, and packaged food manufacturers generate high-FOG effluent. DAF is the industry-standard primary treatment for these applications.

Pulp, Paper & Textile — Fibre recovery, dye removal, and suspended solid clarification in effluent from paper mills, dye houses, and printing units.

Oil Refineries & Petrochemicals — Separation of free and emulsified oil from refinery process water and cooling tower blowdown before it enters the biological treatment system.

Pharmaceutical & Chemical Industries — Removal of fine chemical solids, catalyst fines, and organic load from complex industrial effluents.

Municipal Sewage Treatment — As a primary clarifier replacement or supplemental unit in sewage treatment plants handling high-solids or grease-laden inlet streams.

Automotive & Metal Finishing — Oil-water separation and hydroxide floc removal from coolant wastewater, electroplating rinse water, and metal surface treatment effluents.

Why Choose Trity Environ Solutions as Your DAF Manufacturer?

There is a meaningful difference between buying a DAF unit and having the right DAF system designed for your application. Here's what sets us apart:

• We manufacture — we don't just trade. Every DAF system that leaves our Ghaziabad facility is built in-house, tested, and inspected before dispatch. You get full accountability, direct manufacturer pricing, and no middlemen marking up your capital cost.
• Application engineering, not catalogue selection. Our technical team analyses your effluent characteristics flow rate, TSS, FOG, pH, temperature, and downstream treatment requirements before sizing the system. A DAF unit that isn't matched to your feed performs poorly regardless of how well it's built.
• End-to-end treatment capability. Most DAF suppliers stop at the unit. We design, manufacture, and commission complete wastewater treatment systems. Our DAF units integrate seamlessly with our commercial RO plants and downstream treatment infrastructure so you're working with one accountable team across the entire treatment chain.
• ISO 9001:2015 certified quality. Every unit passes dimensional inspection, pressure testing on the saturation system, and mechanical checks before it's approved for dispatch.
• Rapid pan-India support. Installation, commissioning, operator training, and AMC coverage from Delhi-NCR, our service team reaches industrial clients across India without the delays that come with dealing with foreign suppliers or distant OEMs.

Technical Specifications

Detailed engineering drawings, process flow diagrams, and BOQ available on request.

Request a Free Quote — Response Within 48 Hours

If your facility is dealing with high FOG, poor effluent quality, or recurring compliance issues, a well-designed DAF system is likely the most efficient fix available. Our technical team can assess your requirements and recommend the right configuration without the guesswork.

Share your effluent characteristics, flow rate, and treatment goals with us, and we'll come back with a detailed proposal, indicative pricing, and system configuration typically within 48 hours.