Combination above grade automatic stormwater separation filtrati

Details Combination above grade automatic stormwater separation filtrati Combination above grade automatic stormwater separation filtrati

1998-09-21

2000-06-20

Simmons, David A.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Float

210138, 210170, 2103232, B01D 2124, B01D 3500

Patent

active

060774231

ABSTRACT:
A method and system for treating stormwater runoff containing impurities includes collecting the runoff in a basin and allowing the runoff to settle in the basin for a predetermined time before allowing the filtration step to be initiated. The time delay is controlled by a controller sensitive to rain fall, turbidity, or other variables selected by the user. During the filtration step a separator member is positioned floatingly between a filter element and impurities floating on the surface of the unfiltered water.

REFERENCES:
patent: 1457637 (1923-06-01), Sievers
patent: 3722686 (1973-03-01), Arnett et al.
patent: 4268005 (1981-05-01), Raftis et al.
patent: 4504397 (1985-03-01), Matthews
patent: 5433845 (1995-07-01), Greene et al.
patent: 5536420 (1996-07-01), Oyzboyd
patent: 5897773 (1999-04-01), Rhodes

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