Dissolved Air Flotation (DAF)Â is the process of removing suspended solids, oils and other contaminants via the use of air bubble flotation. Air is dissolved into water, mixed with the....
Dissolved Air Flotation (DAF) is the process of removing suspended solids, oils and other contaminants via the use of air bubble flotation. Air is dissolved into water, mixed with the wastestream and released from solution while in intimate contact with the contaminants. Air bubbles form, attach to the solids, increase their buoyancy and float the solids to the water’s surface. A percentage of the clean effluent is recycled and super-saturated with air, mixed with the wastewater influent and injected into the DAF separation chamber.
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DAF sizing takes into consideration many criteria for sizing:
      Flow rate       Water temperature       Waste characteristics       Chemical pre-treatment       Solids loading (LBS/HR/Ft2)       Hydraulic loading (GPM/FT2)       Air to solids ratio (LBS of air/LBS of Solids)
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