Device for purifying sewage

Details Device for purifying sewage Device for purifying sewage

1975-03-11

1976-09-14

Adee, John

Liquid purification or separation

With gas-liquid surface contact means

With separator

210220, 210274, C02C 104

Patent

active

039805611

ABSTRACT:
A device for purifying sewage by employing a bed of aerobes or activated sludge characterized by the use of a movable air supply means which is moved across the bottom portion of the bed to apply a concentrated supply of air to a limited portion of the bed to effect air washing of the bed and also applies the air washing to the entire bed in a predetermined period of time.

REFERENCES:
patent: 630988 (1899-08-01), Reisert
patent: 810846 (1906-01-01), Cunningham
patent: 1727601 (1929-09-01), Imhoff
patent: 2008507 (1935-07-01), Laughlin
patent: 2204093 (1940-06-01), Mallory
patent: 2340842 (1944-02-01), Rerbold et al.
patent: 2439764 (1948-04-01), Walker
patent: 3010581 (1961-11-01), Knapp et al.
patent: 3567629 (1971-03-01), Arkas et al.

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