Veolia Water Technologies & Solutions

High Rate DAF* Clarifier

Effectively remove algae and low-density solids for drinking water treatment

Dissolved Air Flotation (DAF) is an excellent solution for clarifying water with high levels of algae and other low-density solids that cannot be removed efficiently by sedimentation.

The High Rate DAF* clarifier combines conventional DAF principles with several enhanced components, including a unique effluent collection system. This and other process improvements allow efficient hydraulics within the DAF flotation zone at superior surface loading rates.

High Rate DAF Features

  • Compact footprint due to high loading rates up to 20 gpm/ft2
  • Flexible layout options, customized to any size plant
  • Retrofit existing sedimentation basins to increase capacity of existing plants
  • Ideal for membrane pretreatment since polymer typically is not required
  • Efficient for cold water clarification
  • Start-up and shut-down within minutes
  • Hydraulic or mechanical sludge removal options
  • Clarified turbidity < 1 NTU, and algae removal greater than 90%
  • Thickened sludge 2-4%

Featured video

High Rate DAF is a high-rate clarifier utilizing dissolved air flotation for low turbidity surface and algae laden waters. The High Rate DAF clarifier's uniquely engineered effluent collection system provides operating rates unequaled by conventional flotation technologies.