Countercurrent decantation

Details Countercurrent decantation Countercurrent decantation

1981-07-10

1983-09-06

Sever, Frank

Liquid purification or separation

Processes

Separating

210521, 210534, 210540, B01D 2110

Patent

active

RE0313742

ABSTRACT:
In countercurrent decantation, upwardly flowing liquid is treated with downwardly falling solids in a progressive series of vertically stacked treatment cells. Solids fall through a valve from one cell to the next. The valve is a buoyant sphere which will sink, to open, under a weight of solids, but the valve is sufficiently buoyant to close when there is still enough solid queuing thereon to prevent liquid from passing through it.

REFERENCES:
patent: 1123011 (1914-12-01), Ripley
patent: 1199099 (1916-09-01), Munzer
patent: 1344370 (1920-06-01), Allen
patent: 1434089 (0000-01-01), Christensen
patent: 2230386 (1941-02-01), Pecker
patent: 2850439 (1958-09-01), Bodkin

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