Dissolved Air Flotat...

Dissolved Air Flotation (DAF) Systems

Dissolved Air Flotation (DAF) systems provide an efficient and reliable solution for the removal of Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), Fats, Oils & Grease (FOG/O&G), and other suspended contaminants from industrial wastewater. Designed for high separation efficiency and compact installation. Our DAF systems help industries achieve superior water quality while meeting stringent environmental regulations.

By combining advanced air dissolution technology with optimized flotation and sludge removal mechanisms, our systems deliver consistent performance across a wide range of wastewater treatment applications.

Dissolved Air Flotation Works

The DAF process uses microscopic air bubbles to separate suspended contaminants from wastewater through flotation.

Air Dissolution

A portion of the treated water is recycled and pressurized with air inside a saturation system, creating an air-saturated recycle stream.

Mixing

The pressurized recycle stream is introduced into the incoming wastewater within a contact chamber. As pressure is released, millions of fine microbubbles are generated.

Flotation

These microbubbles attach to suspended solids, fats, oils, grease, and other contaminants, reducing their density and lifting them to the water surface.

Sludge Removal

The floated contaminants form a sludge blanket that is continuously removed by an efficient surface skimmer and transferred to a sludge hopper for further treatment or disposal, while clarified water exits the system.

Key Features & Advantages

High removal efficiency for TSS, BOD, COD, FOG, and suspended solids
Compact design requiring minimal installation space
High-performance air saturation system for consistent microbubble generation
Counter-current sludge scraping for improved sludge separation
Sludge thickening design to reduce sludge volume
Fewer moving parts for lower maintenance and improved reliability
Corrosion-resistant construction
Optional skid-mounted package for quick installation
Can be integrated with chemical dosing, polymer preparation, filtration, and sludge dewatering systems
Optional conversion to Dissolved Gas Flotation (DGF) for refinery and offshore applications

E Series DAF Available Models with Specifications

Model	Max Flowrate		L	W	H	Surface Area
Model	BPD	m3/h	m	m	m	m²
E-405	4,457	29.5	2.5	1.6	2.8	18.8
E-505	7,954	52.7	2.9	1.9	3.3	3.6
E-510	15,840	104.9	4.4	1.9	3.3	67.1
E-515	23,829	157.8	6.1	1.9	3.3	100.8
E-520	31,714	210.1	7.8	1.9	3.3	134.2
E-815	39,600	262.3	6.3	2.8	3.3	167.6
E-820	52,800	349.7	7.9	2.8	3.3	223.4
E-825	65,966	436.9	9.6	2.8	3.3	279.3
E-1025	79,302	525.3	9.9	3.4	3.3	335.7
E-1030	95,108	630	11.6	3.4	3.3	402.7
E-1035	1,10,982	735.1	13.2	3.4	3.3	469.9
E-1040	1,26,857	840.3	14.9	3.4	3.3	537

Model	Max Flowrate	Recirculation Flowrate	Air Injection
Model	m3/h	m3/h	m3/h
E-405	29.5	6 - 8.9	0.6 - 1.1
E-505	52.7	11 - 15.8	1.1 - 1.9
E-510	104.9	21 - 31.5	2.1 - 3.8
E-515	157.8	32 - 47.4	3.2 - 5.7
E-520	210.1	42 - 63	4.2 - 7.6
E-815	262.3	52 - 78.7	5.2 - 9.4
E-820	349.7	70 - 104.9	7 - 12.6
E-825	436.9	87 - 131.1	10.5 - 18.9
E-1025	525.3	105 - 157.6	10.5 - 18.9
E-1030	630	126 - 189	12.6 - 22.7
E-1035	735.1	147 - 220.5	14.7 - 26.5
E-1040	840.3	168 - 252.1	16.8 - 30.2

Benefits

Excellent clarification performance with high contaminant removal efficiency
Reduced operating and maintenance costs
Faster separation with higher hydraulic loading capacity
Smaller footprint compared to conventional clarification systems
Improved sludge handling and reduced sludge carryover
Easy integration with complete wastewater treatment plants
Reliable operation across varying wastewater characteristics

Applications

Our Dissolved Air Flotation systems are ideal for treating wastewater from:

Food & Beverage Processing
Dairy & Milk Processing
Meat, Poultry & Seafood Industries
Edible Oil & Vegetable Processing
Pulp & Paper Mills
Chemical & Pharmaceutical Industries
Textile Processing
Oil Refineries & Petrochemical Plants
Municipal Wastewater Treatment
General Industrial Wastewater Treatment

Why Choose Alantech DAF Systems?

Our DAF systems are engineered to deliver maximum treatment efficiency with minimal operational complexity. Combining proven flotation technology, robust construction, and customizable configurations, they provide a dependable solution for industries seeking efficient primary wastewater treatment while reducing environmental impact and operating costs.

Whether as a standalone clarification unit or part of a complete wastewater treatment system, our DAF solutions are designed to meet your specific process requirements and deliver long-term performance.

Need a Customized Wastewater Treatment Solution?

Our engineering team can evaluate your wastewater characteristics and recommend the most suitable Dissolved Air Flotation system for your application. Contact us today to discuss your requirements and receive a customized proposal