Sludge transfer systems and methods

Details Sludge transfer systems and methods Sludge transfer systems and methods

1990-11-29

1991-10-29

Jones, W. Gary

Liquid purification or separation

Processes

Separating

2101981, 210205, 210220, 2102212, 2102211, 261 77, 137205, 137572, 137575, B01D 4702

Patent

active

050613782

ABSTRACT:
Known water or wastewater treatment methods, wherein a layer of fluid sludge is formed during operation of the method in a first chamber beneath a body of liquid partially filling the first chamber to an upper liquid level, fluid sludge from the first chamber is processed in a second chamber and a stream of fluid sludge is conveyed by a conduit from the first chamber as influent to the second chamber, are improved by creating upward flow of fluid sludge through a vertical stackpipe by introducing large bubbles within the stackpipe with its inlet end immersed in the layer of fluid sludge, discharging fluid sludge through an elongated, longitudinal side opening in the top portion of the stackpipe into a collector zone at least a portion of which is at a vertical height above the upper liquid level, controlling the rate of the discharge of fluid sludge by vertical adjustment of the position of the side opening relative to the upper liquid level in the first chamber and flowing fluid sludge from the collector zone into the conduit for conveyance as the influent to the second chamber. Apparatus to accomplish the new methods is disclosed.

REFERENCES:
patent: 3396102 (1968-08-01), Forrest
patent: 4582599 (1986-04-01), Repin et al.
patent: 4710290 (1987-12-01), Briltz
patent: 4931175 (1990-06-01), Krofta

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