Method of improving the SVI of mixed liquor in aeration tank

Details Method of improving the SVI of mixed liquor in aeration tank Method of improving the SVI of mixed liquor in aeration tank

1982-04-28

1984-06-05

Castel, Benoit

Liquid purification or separation

Processes

Treatment by living organism

210622, 210625, 210631, C02F 312

Patent

active

044526997

ABSTRACT:
In the treatment of wastewater by the activated sludge process, mixed liquor in the aeration tank or settled sludge is drawn from the system and concentrated. The concentrated sludge is returned to the aeration tank either immediately or after being mixed with separated water and settled sludge to thereby reduce the SVI of the mixed liquor in the aeration tank.

REFERENCES:
patent: 3787316 (1974-01-01), Brink et al.
patent: 3959124 (1976-05-01), Tchobanoglous
patent: 4082671 (1978-04-01), Kelly
patent: 4267050 (1981-05-01), Conway et al.
patent: 4341632 (1982-07-01), Gregor et al.

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