Liquid purification or separation – Filter – Movable medium
Patent
1995-11-28
1999-01-26
Popovics, Robert J.
Liquid purification or separation
Filter
Movable medium
210400, 210401, 100111, 100116, 100118, 100152, 100215, B01D 3329, B30B 924
Patent
active
058634290
ABSTRACT:
In a method and apparatus for removing water from sludge the sludge is introduced into an intermediate chamber from which it is fed into at least one sludge chamber having a filter surface. A hydrostatic pressure is built up in the sludge chamber to remove the water. The sludge chamber is then opened and the filter surface moved out of the sludge chamber to remove the filter cake. The hydrostatic pressure is generated by the sludge being transferred out of the intermediate container, after the continuous feed of sludge thereto has been cut off, by positive displacement of the volume of sludge from the intermediate container into the sludge chamber. The feed of sludge into the sludge chamber may occur simultaneously at a plurality of points from a corresponding number of intermediate containers.
REFERENCES:
patent: 3796316 (1974-03-01), Matz
patent: 4387633 (1983-06-01), Ballantyne
patent: 4396130 (1983-08-01), Robinson
patent: 4660608 (1987-04-01), Arai
patent: 4906369 (1990-03-01), Bahr
patent: 5051194 (1991-09-01), Bahr
patent: 5236583 (1993-08-01), Wang
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