Dissolved Air Flotation Units (DAF Wastewater Systems)

Dissolved Air Flotation (DAF) units are used to remove suspended matter, such as fats, oils, and grease (FOG), total suspended solids (TSS), and insoluble BOD, from wastewater in wastewater treatment systems. bioprocessH2O provides a complete line of bioDAF units along with ancillary equipment for purchase, rental, and piloting. DAF systems work by dissolving air into the wastewater, creating thousands of microbubbles, and aerating the wastewater. This process floats and thickens the suspended material in the wastewater. The solids are then segregated for recovery or disposal. This is an important step for removing solids from wastewater. After this is done, is now ready for further biological treatment and water reuse.

BioprocessH2O provides bioDAF units fabricated of 304 or 316 stainless steel and corrosion-resistant components. Chemical coagulation and chemical feed systems are provided to enhance solids removal based on the design and operating requirements. A DAF can be used by an industrial company to meet specific limits for oil and grease and or suspended solids set by a municipality (to meet a discharge limit). A DAF wastewater system is one of the best ways to remove solids from your wastewater.


Our DAF Technology

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bioDAF Dissolved Air Flotation




  • Process high solid and FOG loadings
  • Process flow rates between 5 GPM and 3,000 GPM
  • Used for pre-treatment and biological solids removal
  • Versatile product for a variety of primary and secondary treatment applications

Process Benefits

  • Simple and unique design
  • Compact footprint
  • Cost-effective
  • Provides thickened sludge to minimize waste volumes
  • Easy to operate and maintain



Our bioDAF systems provide cost effective, easy to operate technology with minimal maintenance for primary and secondary wastewater needs.