Liquid purification or separation – Flow – fluid pressure or material level – responsive – Filter cleaning
Patent
1988-08-29
1989-12-05
Fisher, Richard V.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Filter cleaning
210138, 210274, 210277, 210289, 210279, B01D 2908
Patent
active
048850837
ABSTRACT:
A single chamber filter module containing a buoyant bed of filter particles through which the fluid to be filtered is passed in an upward direction through the bed so that the solids become trapped within the bed. The filtrate is withdrawn from the upper end of the module. Periodically, the filter bed is rehabbed by dispersing the bed, washing the entrapped solids from the particles and discharging the solids from the lower end of the module.
REFERENCES:
patent: 2855364 (1958-10-01), Roberts
patent: 4115266 (1978-09-01), Oshima
patent: 4246118 (1981-01-01), Tada et al.
patent: 4276181 (1981-06-01), Cordier et al.
Fisher Richard V.
Upton Christopher
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