Apparatus and method for treatment of liquids

Details Apparatus and method for treatment of liquids Apparatus and method for treatment of liquids

1979-05-31

1981-03-17

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

2101953, 210601, 261 29, C02F 322

Patent

active

042565758

ABSTRACT:
An apparatus and method for treating aqueous waste material having a biochemical oxygen demand comprises a method utilizing a vessel in which a volume of waste material establishes itself into an upper zone of clarified waste material and a lower zone of liquid containing bacterial sludge. Liquid from the lower zone is mixed with incoming sewage and the resulting mixture is fed first to an oxygenation chamber and then to a stilling chamber located in the upper zone of the vessel. Baffle means is located within the vessel for deflecting and reducing the momentum of the aqueous waste material as it leaves the stilling box and falls to the lower zone.

REFERENCES:
patent: 3804255 (1974-04-01), Speece
patent: 3807565 (1974-04-01), Langston et al.
patent: 4000227 (1976-12-01), Garrett
patent: 4043771 (1977-08-01), Anand
patent: 4054524 (1977-10-01), Mackrle et al.

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