Controlled velocity settling tank

Details Controlled velocity settling tank Controlled velocity settling tank

1992-08-10

1994-03-29

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210767, 210 87, 210319, 2105322, 210208, 210537, B01D 2100

Patent

active

052981762

ABSTRACT:
A settling tank for settling inorganic matter such as sand, grit and plastic from a fluid stream such as a waste water stream entering a waste water treatment facility. A set of mechanical mixers directing energy into the fluid stream so as to cause spiraling flow parallel to a substantially horizontal axis. The mixer shaft is rotated by a motorized drive, the speed of which is adjustable to account for variations in fluid flow rate so that an optimal balance is achieved between the settling of inorganic solids and continuing suspension and resuspension of organic solids for subsequent treatment.

REFERENCES:
patent: 1737624 (1929-12-01), Thomson
patent: 2179246 (1939-11-01), Applebaum
patent: 3705099 (1972-12-01), Hunter
patent: 3984331 (1976-10-01), Paige
patent: 4176064 (1979-11-01), Black

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