Wastewater flotation

Details Wastewater flotation Wastewater flotation

C - Chemistry, Metallurgy

02

F

362/62, 204/89

C02F 1/00 (2006.01)

Patent

CA 1091830

WASTEWATER FLOTATION Abstract of the Disclosure: A flow of wastewater is adjusted to near zero streaming potential by injecting a combination of a mineral acid and a multivalent metal coagulant into the wastewater. The potential is measured in streaming detector units. The thus adjusted flow enters a coagulation cell for contacting the flow with dense quantities of small bubbles to form an initial floc. The flow then passes to a basin where a combined floc is separated and skimmed along the surface of the basin to a location generally above the entrance to the basin. A supplemental supply of bubbles preferably is maintained below the surface of the skimmings at this location in order to decrease the water content of the skimmings.

293867

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