Process for removal of suspended solids from liquid

Details Process for removal of suspended solids from liquid Process for removal of suspended solids from liquid

1977-10-25

1979-07-24

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 80, 210 81, B01D 2324

Patent

active

041622162

ABSTRACT:
A process for removal of solids from a liquid containing suspended solids by flowing the liquid through a filter bed of discontinuous polyurethane particles in a filtration vessel. For renewal of the filter bed, deposited solids are removed from the discontinuous polyurethane particles by adding at least one bed volume of a regeneration liquid to the filter vessel and mechanically mixing the filter bed of polyurethane particles in a total volume of liquid comprising the regeneration liquid and the hold-up liquid in the filter bed resulting from the termination of liquid flow therethrough, thereby forming solids-enriched liquid, and discharging the solids-enriched liquid from the filtration vessel.

REFERENCES:
patent: 402224 (1889-04-01), Blessing
patent: 751061 (1904-02-01), Deshler
patent: 862156 (1907-08-01), Hartsough
patent: 3352778 (1967-11-01), Brink et al.
patent: 3617551 (1971-11-01), Johnston
patent: 3779908 (1973-12-01), Gregory

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