System for filtering suspended solids from a liquid

Details System for filtering suspended solids from a liquid System for filtering suspended solids from a liquid

1987-07-06

1988-10-25

Cintins, Ivars

Liquid purification or separation

Processes

Separating

210792, 210795, 210269, 210274, 210277, B01D 2310, B01D 3700

Patent

active

047802197

ABSTRACT:
A filtration system and method for the removal of suspended solids from a contaminated liquid in which the contaminated liquid is pumped into the top of a vessel and allowed to flow through a bed of polyethylene particles which acts as a filtering medium. Periodically the flow of liquid through the polyethylene filter bed is stopped and a backwash cycle in which the contaminated liquid is pumped in a reverse flow direction through the filter bed is initiated. By thoroughly agitating the filter bed and polyethylene particles, contaminants are loosened and removed from the polyethylene particles and placed back into the liquid. The highly concentrated contaminated liquid is removed from the vessel for further processing. The filter bed is reset and the filtering cycle is again initiated.

REFERENCES:
patent: 3424674 (1969-01-01), Webber
patent: 3471025 (1969-10-01), Dobson
patent: 3698554 (1972-10-01), Mail
patent: 4162216 (1979-07-01), Nyer
patent: 4328105 (1982-05-01), Arbuckle

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