Method of purifying waste water

Details Method of purifying waste water Method of purifying waste water

1977-08-18

1979-01-16

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 16, 210 38R, 210DIG28, 48197A, C02C 114

Patent

active

041348303

ABSTRACT:
A method of biologically purifying waste water rich in carbohydrates or proteins, wherein the waste water is treated in an anaerobic stage while leading off generated methane gas, sludge-bearing water formed being subjected to sludge separation during formation of a first sludge concentrate which is returned to the anaerobic stage, and that the water thus treated is treated in an aerobic stage, sludge-bearing water formed being subjected to slude separation during formation of a second sludge concentrate, of which at least a portion is returned to the aerobic stage, while possible excess is returned to the anaerobic stage, a portion of the first, and possibly also of the second sludge concentrate being led off for disposal.

REFERENCES:
patent: 3429806 (1969-02-01), Carter et al.
patent: 3520802 (1970-07-01), Pavia
patent: 3579439 (1971-05-01), Meiring et al.
patent: 3723308 (1973-03-01), Breck
patent: 3824185 (1974-07-01), Caldwell et al.
patent: 3838199 (1974-09-01), Coe et al.
Lawrence A. W.; "Application of Process Kinetics to Design of Anaerobic Processes"; found in Anaerobic Biological Treatment Processes; A.C.S. (1971).

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