C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/12 (2006.01)
Patent
CA 2267690
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.
Dorica Joseph
Elliott Allan R.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Pulp And Paper Research Institute Of Canada
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