Dissolved Air Flotation (DAF) is the process used for the treatment of effluents to reduce BOD/COD, suspended solids and grease concentrations to a level acceptable for sewer discharge. It is a process whereby air is used to decrease the density of entrained solids and immiscible liquids thus accelerating the process of gravity separation of the contaminants from the water phase.
The effluent from the waste water treatment plant normally requires chemical preconditioning to ensure the contaminants are in the most suitable form for separation to occur. The nature of the chemical pre-treatment will vary with the effluent type and is required to flocculate and coagulate the suspended solids, grease present and protein in the effluent.
Waste Water Treatment - SWA DAF Units Features
Factory made units from 1m3/h up to 500 m3/h
Larger units constructed on site
Capable of removing insoluble particles and oil/grease from a carrier water phase
More than 20 units made in last two years
Sludge thickening Dissolved Air Flotation units available
Co-current and counter-current DAF units available
Separates neutral density particles
Customised chemical pre-treatment
Recycle system creates microfine flotation air bubbles using SWA’s unique pressure air saturation pipe
Wide range of applications
Full treatment system integration
Pilot Plants available
Compact process requiring less space
Yields higher concentrations of sludge
SWA Water Australia | Industrial Waste Water Treatment Engineers
SWA WATER GROUP specialises in the design, manufacture and construction of industrial waste water treatment plants which include companies in Australia, Thailand, Malaysia and China.
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