Liquid treatment apparatus

Details Liquid treatment apparatus Liquid treatment apparatus

1981-05-11

1983-03-08

Castel, Benoit

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Plural elements controlled

210101, 210137, 210197, 210208, 210519, 417180, 417189, B01D 2124

Patent

active

043760457

ABSTRACT:
In liquid sedimentation and clarification apparatus recirculation of previously settled solids is automatically controlled. Nozzles in an updraft tube produce a suction or pumping force for recirculating such solids, and a flow passage in alternate nozzles is kept closed at low inlet flow rates for untreated liquid. At higher flow rates the closed flow passages are gradually opened by the increased force of the incoming liquid acting against spring biased or weighted valve closure members.

REFERENCES:
patent: 2381589 (1945-08-01), Hayes
patent: 2987007 (1961-06-01), Conkling
patent: 3397788 (1968-08-01), Duff et al.
patent: 3441045 (1969-04-01), Malone
patent: 3951806 (1976-04-01), Young
patent: 4272369 (1981-06-01), Love
patent: 4303517 (1981-12-01), Love et al.

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