flotation separation – UCD^® daf

operating principle :

• Coagulation-flocculation: Addition of a coagulant and passage of the water through a double coagulation compartment, followed by a hydraulic flocculation chamber.
• flotation:
  • Entry of flocculated water into the pressurised water injection zone.
  • Expansion of the pressurised water through a series of nozzles and creation of a cloud of micro-bubbles.
  • Formation of a dense bed of micro-bubbles inside the flotation zone and agglomeration of the flocculated particles.

applications

• Dam, river and eutrophic lake water
• Elimination of low-density particle pollutants (colloids, colour, algae, etc.)
• Water with a high content of organic matter, algae and cyanobacteria
• Clarification of cold water Turbidity of raw water ‹30 NTU (peaks at 200 NTU)
• Pre-treatment for desalination
• Possible utilisation in tertiary phosphorous removal
• Treatment of dirty backwash water

key figures

• Turbidity of clarified water from 1 to 4 NTU according to raw water
• Possibility of sludge extraction from 20 to 40% g/l
• Algae abatement approximately 90%