Biological waste treatment system

Details Biological waste treatment system Biological waste treatment system

C - Chemistry, Metallurgy

02

F

362/18

C02F 3/12 (2006.01)

Patent

CA 1046662

SLUDGE RECYCLE SYSTEM Abstract of the Invention An extended aeration system includes a clarifier and an aeration basin adjacent to the clarifier. Waste inlet means supply waste to the aeration basin. Outlet means on the aeration basin supply aerated waste from the aeration basin to the clarifier. Clarified liquid outlet means remove the treated water from the clarifier. Concentrated sludge outlet means on the clarifier are connected to concentrated sludge inlet means on the aeration basin for recirculating concen- trated sludge settling from the aerated waste in the clarifier. A rotary shaft in the aeration basin has an aeration impeller on it adjacent the top of the aeration basin and a turbine on it adjacent the concentrated sludge inlet means for pumping said concentrated sludge from the clarifier to the aeration basin and for mixing the concentrated sludge with waste in the basin.

221613

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