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Dissolves Air Flotation Unit
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REDA Water Group
Elsharqia, Egypt
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A complete DAF system should include:

  1. Compressed air supply
  2. Influent flow equalization tank and mixing
  3. Screening to protect pumps
  4. Feed pumps
  5. Chemical reaction (pH adjustment, coagulation, flocculation)
  6. Polymer make down system
  7. Mix tanks or in-line pipe flocculation sludge pumping
  8. Sludge storage
  9. Pneumatic control panel
  10. Central PLC cotrol panel to run the
  11. Complete system
  12. Additional treatment steps as needed (sludge dewatering, biological, etc.)

Applications OF Dissolves Air Flotation Unit
Dissolved Air Flotation (DAF) isa technology used extensively for wastewater treatment in food plants, oil & gas, mining, pulp & paper, many major industries and municipal wastewater plants. It also has a very good fit for its use in clarification of drinking water treatment, especially for difficult to flocculate, low temperature, coloured waters, and waters subject to algae blooms. DAF works extremely well for waters that have fats, oils, grease, and very fine particles. DAF can be used by itself asa clarifier, but when used with chemicals such as a coagulant and a flocculent, it becomes a physical/ chemical process. 

A properly functioning DAF will remove:
  1. 90-95% of Total Suspended Solids (TSS)
  2. 90-95% of Fats, Oils & Grease (FOG)
  3. 90-95% of insoluble Biochemical
  4. Oxygen Demand (BOD)

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