Method of dewatering aqueous waste sludge

Details Method of dewatering aqueous waste sludge Method of dewatering aqueous waste sludge

C - Chemistry, Metallurgy

02

F

362/49

C02F 1/56 (2006.01)

Patent

CA 1116765

METHOD OF DEWATERING AQUEOUS, WASTE SLUDGE Abstract of the Disclosure A method of dewatering proteinaceous aqueous waste sludge having a high fat content from food cannery waste water wherein the solids concentration of the sludge is increased from about 10% to about 40% by weight is disclosed. The method comprises adjusting the pH of the sludge to the isoelectric point of the proteinaceous material present in the sludge, adding an organic polymer and separating the solids by high gravity centrifugation so that a concentration of about 20 to about 40% by weight is obtained. The process is particularly suitable for concentrating the solids of sludge derived from fish waste water.

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