Clarifier

Details Clarifier Clarifier

1979-02-26

1980-03-18

Sever, Frank

Liquid purification or separation

With program actuator

Plural treating units or sections sequentially controlled

210525, 210527, B01D 2100

Patent

active

041938712

ABSTRACT:
A longitudinally elongated settling tank with a converging longitudinal hopper bottom along the length thereof has a longitudinally elongated travelling bridge reciprocating continuously or intermittently through a relatively short stroke between the inlet and outlet ends of the tank from which depends a plurality of longitudinally spaced sludge pick-up heads each sucking sludge from a zone in the bottom of the tank during a preset cycle. Liquid fed into one end of the tank forms a settling pond from which clarified liquid flows over longitudinal weirs at the opposite end of the tank. Because of the short stroke of the bridge, the tank can be reinforced with internal framework between the paths of the suction heads permitting use of lighter sheet metal for the tank. A skimmer is automatically lowered into the top of the pond as the bridge advances to sweep oil, scum, and other material floating on the pond into an outlet and is retracted above the pond on the return stroke of the bridge.

REFERENCES:
patent: 3333704 (1967-08-01), McGivern et al.
patent: 3396102 (1968-08-01), Forrest
patent: 3788477 (1974-01-01), Love
"Clarifiers," Bulletin 302, Aqua-Aerobic Systems, Inc.
"Environmental Control Systems & Equipment," Bulletin 1000, FMC Corp.
"Duff-Norton High Duty Cycle Activators," Bulletin 170, Amstar Corp.

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