Method and apparatus for cleaning effluent

Details Method and apparatus for cleaning effluent Method and apparatus for cleaning effluent

2006-02-14

2006-02-14

Prince, Fred G. (Department: 1724)

Liquid purification or separation

Processes

Treatment by living organism

C210S615000, C210S617000, C210S622000, C210S259000, C210S903000

Reexamination Certificate

active

06998048

ABSTRACT:
The process and apparatus of the present invention provides an anoxic pretreatment tank, a granular fixed film denitrification reactor and a membrane bioreactor. Raw waste flows into the anoxic pretreatment tank, through a denitrification filter and then to a membrane bioreactor for nitrification and micro filtering. Contents of the membrane bioreactor are periodically recycled to the anoxic tank and the denitrification filter for BOD reduction, denitrification and coarse filtration.

REFERENCES:
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patent: 5932099 (1999-08-01), Cote et al.
patent: 5961830 (1999-10-01), Barnett
patent: 6299774 (2001-10-01), Ainsworth et al.
patent: 6692642 (2004-02-01), Josse et al.
patent: 7-171594 (1995-07-01), None
patent: 9-271796 (1997-10-01), None
patent: P2002-18468 (2002-01-01), None

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