CFF-MODULE system removes pollutants from wastewater through chemical coagulation and flocculation in combination with efficient dissolved air flotation for high rate clarification.

CFF-MODULE package is a physical-chemical treatment system. The raw water which may have already undergone chemical flocculation in a flocculator, is injected into a mixed in line where it is placed in contact with air-saturated water that has passed through a pressure-release value, resulting in the formation of small air bubbles that attach to the solid particles. Being of lower specific gravity than the water, the par-ticle/bubble composite is separated out in zone and collected at the surface. The resulting sludge is recovered by a surface skimmer and channeled out through a trough. The water separated from the particles is recovered under a scum baffle before it is collected and drained off in. Pressurized water is obtained by recycle pressuri-zation; part of the treated water is recycled and brought into contact with air in a saturation vessel. Solids form bigger flocks settles on the floor which they are discharged by gravity or by means of a special delivery pump. To keep the CFF-MODULE effluent at a fairly, constant quality sand filtration was added to this unit. Filtration was brought into raise the quality of the final effluent and to keep the quality of this effluent as constant as possible.