Treatment of municipal waste sludges

Details Treatment of municipal waste sludges Treatment of municipal waste sludges

C - Chemistry, Metallurgy

02

F

362/49

C02F 11/12 (2006.01) C02F 1/52 (2006.01)

Patent

CA 1056520

ABSTRACT OF THE DISCLOSURE A highly concentrated municipal waste sludge is recovered in a process which involves adding alum and a flocculating agent under alkaline conditions to a dilute waste sludge, adding calcium oxide or hydroxide and filtering the resultant mixture under pressure.

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