Method and apparatus for purifying an activated sludge-waste wat

Details Method and apparatus for purifying an activated sludge-waste wat Method and apparatus for purifying an activated sludge-waste wat

1981-03-24

1982-06-08

Wyse, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210627, 210745, 210 961, C02F 326

Patent

active

043338380

ABSTRACT:
A method and apparatus is disclosed for purifying the waste water in an avated sludge-waste water mixture. In dependence upon the state of purification of the waste water, the mixture is ventilated in automatically controlled manner by a gas comprising molecular oxygen. The automatic control of ventilation is exercised by the use of a monitoring device which measures the visible depth of the waste water and, depending upon the measured value, starts-up or switches-off the ventilation.

REFERENCES:
patent: 2154132 (1939-04-01), Mallory
patent: 3979290 (1976-09-01), Loffler
patent: 4116832 (1978-09-01), Tardivel

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