Activated sludge treatment

Details Activated sludge treatment Activated sludge treatment

C - Chemistry, Metallurgy

02

F

362/15

C02F 3/12 (2006.01) C02F 11/18 (2006.01)

Patent

CA 1066821

ABSTRACT OF THE DISCLOSURE The method of treating an activated sludge to facili- tate dewatering thereof comprising the steps of acidifying the sludge to a pH below about 2.2, heating the acidified sludge to a temperature of from about 150° to 210°F. and maintaining the sludge at said temperature for a period of time sufficient to obtain a settling rate of solids in the first three minutes of at least two-sixteenths inch per minute.

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