Process for reducing production of biomass during activated slud

Details Process for reducing production of biomass during activated slud Process for reducing production of biomass during activated slud

1999-03-31

1999-11-02

Wyse, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210625, 210631, 210928, 162 29, C02F 312, C02F 1102

Patent

active

059763752

ABSTRACT:
A process for reducing the production of biomass during activated sludge treatment of pulp and paper mill effluents, involving a conditioning of the recycled activated sludge (RAS) prior to its return into the aeration tank is described. The conditioning is typically performed within the sludge return line and involves RAS exposure to a waste acidic effluent originating from bleach plants of kraft, sulphite mills or other mill sources.

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