Deep submergence rotating biological contactor apparatus

Details Deep submergence rotating biological contactor apparatus Deep submergence rotating biological contactor apparatus

C - Chemistry, Metallurgy

02

F

362/21

C02F 3/18 (2006.01) C02F 3/08 (2006.01)

Patent

CA 1273720

ABSTRACT A wastewater treatment apparatus is disclosed in which a rotating biological contactor rotatably mounted on a horizontal shaft is deeply submerged in a wastewater tank, so that a substantial portion of attached biomass does not come into contact with the ambient air. A plurality of gas conduits are disposed in said tank beneath the rotating contactor and are positioned to provide rotational energy to said contactor, to serve as the principal source of oxygen for the submerged biomass and to regulate the rotational velocity of the biological contactor so that the oxygen containing air bubbles are caused to rise into the central region of media rather than being swept along and confined to the outer radius of the media as it rotates.

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