Purification treatment of a liquid waste

Details Purification treatment of a liquid waste Purification treatment of a liquid waste

1980-02-01

1981-12-01

Wyse, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210621, C02F 306

Patent

active

043035280

ABSTRACT:
In purification of a liquid waste, the liquid waste material is introduced into a sedimentation tank, and the relatively heavy material settles within the tank and is converted into a sludge through anaerobic activity. The supernatant foul liquid waste from the sedimentation tank is introduced into a submerged bioaeration-beds tank, and the supernatant foul liquid waste descends to successively flow between a plurality of irrigated sheets positioned in superimposed spaced relation within the bioaeration-beds tank. The liquid waste from the bottom of the bioaeration-beds tank is returned to the upper region thereof by an oxygen-containing medium, and the returned liquid waste and the supernatant foul liquid waste descend together and successively flow between the irrigated sheets, whereby the downwardly flowing foul liquid waste is purified by the activity of aerobic micro-organisms in biomembranes formed on both sides of the irrigated sheets, the purified liquid being recovered from the bioaeration-beds tank.

REFERENCES:
patent: 2188162 (1940-01-01), Schulhoff
patent: 3210053 (1965-10-01), Boester
patent: 3371033 (1968-02-01), Simmons et al.
patent: 3486795 (1969-09-01), Bye-Jorgensen et al.
patent: 3732160 (1973-05-01), Klock
patent: 4126544 (1978-11-01), Baensch et al.
patent: 4137171 (1979-01-01), Yokata

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