Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2006-10-15
2010-10-26
Barry, Chester T (Department: 1797)
Liquid purification or separation
Processes
Treatment by living organism
C210S622000, C210S623000, C210S195100, C210S196000, C210S197000, C210S198100
Reexamination Certificate
active
07820048
ABSTRACT:
A method and system for treating organically contaminated waste water for reuse, by: introducing the waste water into a sedimentation tank to remove a significant portion of the organic contaminants; circulating the waste water from the sedimentation tank to an anoxic mixing chamber for denitrifying the waste water; circulating the waste water from the anoxic mixing chamber to a rotary biological contactor to nitrify the waste water by aeration, and to assimilate organic materials therein by bringing the waste water into contact with a biological medium, to thereby output nitrified waste water; and recirculating a portion of the nitrified waste water outputted from the rotary biological contactor back to the anoxic mixing chamber to enhance the nitrifying and denitrifying of the waste water.
REFERENCES:
patent: 4537678 (1985-08-01), Thissen
patent: 5256570 (1993-10-01), Clyde
patent: 6679993 (2004-01-01), Charuckyj et al.
patent: 2001045253 (2001-06-01), None
patent: WO 2007/039910 (2007-04-01), None
International Preliminary Report on Patentability Dated Jan. 22, 2009 From the International Bureau of WIPO Re.: Application No. PCT/IL2006/001172.
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