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0.75kw PH Agitator and 5.5kw Dissolved Pump Power for Grease Wastewater Treatment
DAF System Introduction
Dissolved Air Flotation is a water treatment process that clarifies
wastewaters (or other waters) by the removal of suspended matter
such as oil or solids.
The removal is achieved by dissolving air in the water or
wastewater under pressure and then releasing the air atmospheric
pressure in a flotation tank basin.
The released air forms tiny bubbles which adhere to the suspended
matter causing the suspended matter to float to the surface of the
water where it may then be removed by a skimming device.
DAF System Work Process
The wastewater enter RT1 (coagulation reaction tank) and RT2
(flocculation reaction tank) from the equalization tank through the
lift pump, and coagulates with PAC floculates with (PAM)
respectively form the flocs.
Then the wastewater and dissolved water enter the reaction zone of
the DAF tank, and the microbubbles and flocs in the dissolved water
are mixed and adhered to form solid particles ,which the density
less than water, and float up to the surface of the DAF tank .
Under the action of buoyancy, scum is scraped to the slag tank. The
clean water is collected down to the collect tank through the water
collecting pipe, and most of the outer water is discharged (or into
the next process), and a small part of the water is recirculated to
form the dissolved water.
DAF System Features
1. Micro bubbles generating
2. Subsurface capture
3. Automatic slagging controlled by liquid level
4. Non-clogging releasing with high efficiency.
Application of DAF System
Municipal Sewage
Slaughter House
Metallurgical Industry Wastewater
Spraying Sewage
Printing & Dyeing Sewage
Metal-Processing Sewage
Mining Stone Wastewater
Electronic Sewage
How to select right model?
Wastewater type ( dairy wastewater , car washing wastewater
,slaughter house wastewater, food wastewater , river water …..)
SS content (ppm or mg/L)
Oil & Grease &Fat & FOG content (ppm or mg/L )
PH (6~9 is preferred . Otherwise consider PH adjust tank before DAF
tank , also have to consider the material of the DAF because of
Corrosive substance )
BOD (ppm or mg/L)
COD (ppm or mg/L)
DAF System for References