Sludge removal system

Details Sludge removal system Sludge removal system

1974-09-11

1976-04-20

Hart, Charles N.

Liquid purification or separation

Gravitational separator

Mechanical constituent mover

210530, 210533, B01D 1200

Patent

active

039518191

ABSTRACT:
A sludge removal system for use in the removal of settled sludge collected on the bottom surface of a circular clarifier. The system includes a plurality of self-supporting sludge receiving conduits of various lengths extending radially outward from the center of the tank in a common horizontal plane. Each conduit has a sludge pick-up port associated with the outer end thereof. Vertical riser tubes extend upward from the inner ends of the conduits into a sightwell assembly. At the upper end of each riser tube is a flow control valve arrangement to regulate the amount of sludge flow through each conduit. The valve indicates a pipe within a pipe, both pipes having slotted openings cut therefrom, to provide a variable flow orifice the size of which may be controlled by rotating the inner pipe about the stationary outer pipe. The upper edges of the slotted openings extend above the static liquid level in the clarifier.

REFERENCES:
patent: 3166502 (1965-01-01), Kelly
patent: 3298529 (1967-01-01), Longnecker
patent: 3338827 (1967-08-01), Mausolf
patent: 3349030 (1967-10-01), Savage
patent: 3371788 (1968-03-01), Smith
patent: 3494462 (1970-02-01), Baud
patent: 3669271 (1972-06-01), McGivern
patent: 3800955 (1974-04-01), Edgerton et al.

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