Apparatus for the treatment of liquids

Details Apparatus for the treatment of liquids Apparatus for the treatment of liquids

1978-02-02

1982-04-13

Castel, Benoit

Liquid purification or separation

Recirculation

From bottom of separator

210207, 210220, C02F 322

Patent

active

043246575

ABSTRACT:
The invention relates to apparatus for the treatment of sewage or other aqueous waste material having a biochemical oxygen demand in a single tank, the treatment involving the oxygenation of the sewage.
With reference to FIG. 1, a volume of sewage in a treatment tank 110 establishes itself naturally into an upper layer 124 of clear liquid and a lower layer of liquid containing bacterial sludge. Liquid containing bacterial sludge from the lower layer 122 is united with incoming sewage from pipeline 120 and the resulting mixture is pumped by pump 114 into an oxygenating chamber 115 in which oxygen is dissolved in the liquid. The resulting oxygenated liquid enters a stilling chamber 112 located in the upper layer 124. Clear liquid is run off from the tank 110 over a weir 128.

REFERENCES:
patent: 3547814 (1970-12-01), McWhirter
patent: 3788476 (1974-01-01), Othmer
patent: 3804255 (1974-04-01), Speece
patent: 3966598 (1976-06-01), Ettelt
patent: 3983031 (1976-09-01), Kirk
patent: 4000227 (1976-12-01), Garrett
patent: 4043771 (1977-08-01), Anand
patent: 4071443 (1978-01-01), Gorski et al.

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