Biological wastewater treatment process and reactor

Details Biological wastewater treatment process and reactor Biological wastewater treatment process and reactor

2004-12-16

2008-09-09

Barry, Chester T. (Department: 1797)

Liquid purification or separation

Processes

Treatment by living organism

C210S629000, C210S220000, C210S196000, C210S788000, C210S221100

Reexamination Certificate

active

07422688

ABSTRACT:
An aerated treatment of water is performed using a serially coupled reactor and flotation tank and is performed using so much activated sludge in the water that small bubbles from an aerator are entrained in the activated sludge, leading some of or all the activated sludge to flotate in the flotation tank. A reactor (1) and a flotation tank (36) for performing the process are equipped with at least one aerator (19, 20, 21, 22). A number of preferred processes and designs elaborate on the invention, including how the invention may be incorporated into existing wastewater treatment facilities and exploited there.

REFERENCES:
patent: 4374027 (1983-02-01), Severeid et al.
patent: 5645726 (1997-07-01), Pollock
patent: 6245237 (2001-06-01), Blough et al.
patent: 6984325 (2006-01-01), Venable
patent: 2057415 (1981-04-01), None
patent: 59115777 (1987-07-01), None
patent: 04 040295 (1992-02-01), None
patent: 2002 307088 (2002-10-01), None

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