Dissolved air flotation

Details Dissolved air flotation Dissolved air flotation

C - Chemistry, Metallurgy

02

F

C02F 1/24 (2006.01) B01D 24/20 (2006.01) B01D 36/00 (2006.01) B03D 1/02 (2006.01) B03D 1/24 (2006.01) C02F 1/52 (2006.01) C02F 9/00 (2006.01)

Patent

CA 2128729

The invention relates to a liquid treatment method and apparatus for removing impurities from a liquid stream, comprising forming a zone of micro gas bubbles from a source (3) across substantially the whole surface area of a treatment vessel (12) which is situated above a filter bed (13), passing liquid to be treated into the vessel (12) above the inlet (3) for the air whereby the liquid passes in countercurrent mode through the air bubbles.

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