Device for the biological purification of waste water

Liquid purification or separation – Recirculation – From bottom of separator

Patent

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Details

210208, 210219, 210256, C02F 322

Patent

active

042513715

ABSTRACT:
A device for the biological purification of waste water and for the degasification and clarification of a sludge-water mixture resulting from the biological purification includes a reactor container defining a chamber, means for introducing air, waste water and activated sludge into the chamber and means for discharging overflowing sludge-water mixture from the reactor container (activation chamber). A guide element is disposed within the chamber for maintaining a loop-shaped flow therein. A section of the wall of the reactor container is surrounded by a jacket, the lower end of which is joined to the periphery of the wall of the reactor container intermediate its ends and the upper end of which is substantially concentric to and spaced outwardly from the container; the lower portion of the jacket may have an inverted frusto-conical configuration; the jacket defines with the reactor container an annular space around the container, a portion of said space being adapted for settling of sludge out of the sludge-water mixture overflow. An inlet element and a discharge trough are arranged about the reactor container. The overflow from the reactor container discharges into the inlet element and passes via outlet means to the settling portion of said annular space, wherein sludge separates from effluent of the sludge-water mixture. Effluent from the mixture passes into the discharge trough for removal via another outlet means from the apparatus.

REFERENCES:
patent: 3043433 (1962-07-01), Singer
patent: 3439807 (1969-04-01), Danjes
patent: 4100071 (1978-07-01), Beurer et al.

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