Method and device for purifying water

Details Method and device for purifying water Method and device for purifying water

1994-02-16

1995-12-26

Hruskoci, Peter A.

Liquid purification or separation

Processes

Treatment by living organism

210618, 210636, 210747, 210150, 210170, 2102421, C02F 306, B01D 3505

Patent

active

054784735

ABSTRACT:
A body of water is purified by filtering its water both physically and biologically through a filter layer preferably consisting of a floating filter layer, and by contacting aerobic bacterial flocks, which are formed in the filter layer in time, with the mud in the river bottom typically placed in an anaerobic condition so that denitrification of the river water by denitrifying bacteria may be promoted. Thus, the present invention assists the natural biological purification process, and can improve The transparency of the water, reduce BOD and COD, promote denitrification to a sufficient extent to make the water liveable for fish, and trap low concentration toxic chemical substances such as insecticides and herbicides into the bacterial flocks.

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patent: 5006251 (1991-04-01), Takeishi et al.
patent: 5080782 (1992-01-01), Caplan et al.
patent: 5122287 (1992-06-01), Hsiung
patent: 5228998 (1993-07-01), DiClemente et al.
patent: 5314619 (1994-05-01), Runyon

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