Liquid purification or separation – With means to add treating material – Directly applied to separator
Patent
1997-11-14
1999-10-19
Lithgow, Thomas M.
Liquid purification or separation
With means to add treating material
Directly applied to separator
210295, 210298, 210406, 210413, 210523, 210526, 210540, C02F 124, B01D 2118, B01D 2964, B01D 3604
Patent
active
059683538
ABSTRACT:
A rectangular clarifying tank has an inclined beach formed of sheet metal and having 575 holes per square inch, each hole having a diameter of 20 thousandths of an inch. Two side chain drives advance several scrapers along the beach. Each scraper has a rotatable knurled pipe which turns the sludge and aids dewatering through the beach. The sludge removed from the clarifier has a solids content of between eight and twelve percent. Additional dewatering may be accomplished by applying a vacuum to the last one-quarter of the beach. A tray positioned beneath the beach collects water which drains through the beach. The drain water may be returned to the clarifier tank or may be directly treated as clarified water.
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"White Water DAF Clarifier--Tissue Machine Project"no date some text blacked out.
Gero William A.
Herbert Richard P.
Beloit Technologies Inc.
Campbell Raymond W.
Lithgow Thomas M.
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