Method for treating liquids

Details Method for treating liquids Method for treating liquids

2008-01-01

2008-01-01

Barry, Chester T. (Department: 1724)

Liquid purification or separation

Processes

Treatment by living organism

C210S620000

Reexamination Certificate

active

07314564

ABSTRACT:
A system for treating wastewater includes a basin to contain wastewater, an aerator provided in the basin to mix the wastewater, and a cover system to cover a surface of the wastewater contained in the basin. The cover system includes a plurality of hollow bodies disposed on the surface of the wastewater. Each hollow body is adapted to float on the wastewater's surface, and has a contiguous outer surface and a sufficient mass so that 30 to 70 percent of the hollow body's outer surface is exposed to atmosphere during use. A method of treating wastewater is further disclosed.

REFERENCES:
patent: 3595537 (1971-07-01), Kaelin
patent: 5750041 (1998-05-01), Hirane
patent: 6110389 (2000-08-01), Horowitz
patent: 6383389 (2002-05-01), Pilgram et al.
patent: 6666965 (2003-12-01), Timmons
patent: WO 03/041837 (2003-05-01), None
EURO-MATIC, “Hollow Plastic Balls for Industrial Applications,” Sep. 10, 2004, (7 pgs), http://www.euro-matic.com/hollow.html.
USFILTER, “Aerator Products Aqua-Lator® High Speed Surface Aerators,” 1999, pp. 2-15.
USFILTER, “Aerator Products Aqua-Lator® DDM Direct Drive Mixers,” 2001, pp. 4.

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