Waste water filtration and sludge removal system

Details Waste water filtration and sludge removal system Waste water filtration and sludge removal system

1978-05-08

1980-02-26

Hart, Charles N.

Liquid purification or separation

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

Responsive to fluid flow

210271, 210290, B01D 2324

Patent

active

041905342

ABSTRACT:
A waste water filtration and sludge removal system for filtering and removing sludge materials suspended in water resulting from steel pickling and cleaning operations and the like. The system includes a trough-like filtering tank having weep holes along the lower edge draining into an inclined channel for capturing filtered water for reuse, and also includes a multiple layer filter bed containing an upper layer of fine jagged surfaced particles for capturing filtered sludge. The sludge layer deposited on the surface of the upper filter layer is periodically moved by means of an adjustable screed blade toward an elevated discharge station for removal from the tank without significantly disturbing the filter bed. The screed blade may be automatically raised out of contact with the sludge layer when operated in the reverse direction.

REFERENCES:
patent: 2207136 (1940-07-01), Veatch
patent: 2396769 (1946-03-01), Asch
patent: 3771655 (1973-11-01), Hudson
patent: 4075109 (1978-02-01), Blalock
patent: 4081365 (1978-03-01), White et al.
Montgomery, Gail E., "The Effect of Chemical Sludge Physical Properties on Sand Bed Dewatering and Drying", Thesis document presented at the University of Missouri, Dec. 1973.

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