Air-driven contact filter

Details Air-driven contact filter Air-driven contact filter

C - Chemistry, Metallurgy

02

F

362/21

C02F 3/08 (2006.01)

Patent

CA 1300285

A B S T R A C T An air-driven contact filter for biological cleaning of waste water has spiral wound channels with an axis placed below the surface of the water. Air is blown into the center and water is displaced so that the channels will rotate.

537933

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