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Dissloved Air Floatation


Dissolved Air Floatation is one of the most effective method to remove suspended solids (TSS), biochemical oxygen demand (BOD5), and oils and greases (O&G) from a wastewater stream. As the name suggests, dissolved air flotation works by injecting pressurized air into a recycle stream, which is made of already-clarified DAF liquid waste. The system then combines and mixes the recycle stream with incoming wastewater in an internal contact chamber.
In that chamber, the dissolved air comes out of the DAF liquid solution in the form of micron-sized bubbles. These bubbles attach to the contaminants in the wastewater and together they rise to the surface and form a floating bed of material. A surface skimmer removes this conglomeration of material and puts it in an internal hopper for further processing.

3D View of the product

Why choose our DAF:

  • Compact design and  small footprint in comparison to other technologies
  • Higher quality effluent discharged to sewer further reducing trade effluent charges
  • Reduced sludge volume with higher dry solids content
  • Can be used for recovery and recycling of non-emulsified oils with no further treatment required