Sewage treatment system and method

Details Sewage treatment system and method Sewage treatment system and method

1994-01-03

1995-10-03

Wyse, Thomas

Liquid purification or separation

Processes

Treatment by living organism

210622, 210138, 210196, 210201, C02F 306

Patent

active

054549493

ABSTRACT:
The invention is directed to a sewage treatment system comprising a tank in which biological treatment by microorganisms occur in mixed liquor and a circulating loop for removing mixed liquor from the tank and returning oxygen enriched aerated mixed liquor to the tank. The mixed liquor is removed and returned to the tank through a pair spaced apart submerged filters. One alternative construction is to use a pressure tank in the circulation loop to increase the percentage of dissolved oxygen in the aerated mixed liquor.

REFERENCES:
patent: 4009099 (1977-02-01), Jeris
patent: 4818404 (1989-04-01), McDowell
patent: 4954257 (1990-09-01), Vogelpohl et al.
patent: 5080793 (1992-01-01), Urlings
patent: 5228997 (1993-07-01), Martin et al.

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