Underdrain unit with air/water backwash for granular filtration

Details Underdrain unit with air/water backwash for granular filtration Underdrain unit with air/water backwash for granular filtration

1980-08-01

1982-05-25

Cintins, Ivars C.

Liquid purification or separation

Processes

Separating

210274, 210275, 210289, 210293, B01D 2324

Patent

active

043315429

ABSTRACT:
A self-supporting underdrain unit to be placed upon the substantially horizontal floor of a filter tank to provide a liquid filtration system is disclosed. The self-supporting underdrain unit provides separately controllable fluid and exhaust gas header systems for backwashing. The exhaust gas and backwashing fluid are mixed in a turbulent mixing zone to provide superior backwashing and cleansing action.

REFERENCES:
patent: 1069737 (1913-08-01), Stevenson
patent: 1871122 (1932-08-01), Kretzschmar
patent: 2767852 (1956-10-01), Ellila
patent: 3613888 (1971-10-01), Harris
patent: 3831761 (1974-08-01), Chantereau
patent: 3956134 (1976-05-01), Sturgill
patent: 4064050 (1977-12-01), Heaney et al.
patent: 4118322 (1978-10-01), San Roman

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