Gas backwash of pleated filters

Details Gas backwash of pleated filters Gas backwash of pleated filters

1993-03-16

1995-11-21

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210808, 95279, 95281, B01D 2966

Patent

active

054683971

ABSTRACT:
In critical filtration applications, filter cartridges are employed to replace ion exchange resin precoat filters to minimize the waste produced. The filter cartridges are backwashed with all gas and the liquid in the filter housing provides an active scouring effect as a result of the high levels of turbulence produced. The liquid, with entrained debris from the filter is minimized in volume.

REFERENCES:
patent: 3666097 (1972-05-01), Ryan
patent: 3891551 (1975-06-01), Tiedemann
patent: 4405466 (1983-09-01), Giannelli et al.
patent: 4540490 (1985-09-01), Shibata et al.
patent: 5149449 (1992-09-01), Strid et al.

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