Filter apparatus and method

Details Filter apparatus and method Filter apparatus and method

1983-10-03

1985-01-29

Cintins, Ivars

Liquid purification or separation

Processes

Separating

210807, 210269, 210289, B01D 2324

Patent

active

044964641

ABSTRACT:
A filter system has a filter media comprised of particles of filter material contained within the lower end of a vessel. Liquid flows into the upper end of the vessel and down through the filter media, thereby removing unwanted contaminants from the liquid. When the accumulated contaminant load in the filter media reaches a selected value, the filter media is cleaned of contaminants by vigorously circulating the media within the vessel. This scrubbing action transfers the contaminants from the filter media into the scrub water, and thereby enables the contaminants to be removed from the vessel by discharging the scrub water therefrom. All activity is stopped to enable the media to gravitate back to the bottom of the vessel. The cleaned filter is returned to operation.

REFERENCES:
patent: 25761 (1965-03-01), Hirs
patent: 2136660 (1938-11-01), Martin
patent: 3557955 (1971-01-01), Hirs
patent: 3557961 (1971-01-01), Stuart
patent: 3737039 (1973-06-01), Hirs
patent: 3757954 (1973-09-01), Toth
patent: 3780861 (1973-12-01), Hirs
patent: 3812969 (1974-05-01), Maroney
patent: 4246102 (1981-01-01), Hjelmner et al.
patent: 4320004 (1982-03-01), Schecter

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