Liquid treatment apparatus

Details Liquid treatment apparatus Liquid treatment apparatus

B - Operations, Transporting

01

D

182/140

B01D 21/24 (2006.01) B01D 21/00 (2006.01)

Patent

CA 1167391

LIQUID TREATMENT APPARATUS 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.

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