Method of sludge disposal related to the hot water...

C - Chemistry – Metallurgy – 10 – G

Patent

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C10G 1/04 (2006.01)

Patent

CA 1063956

ABSTRACT OF THE DISCLOSURE A method for reducing the sludge content of a retention pond associated with the hot water process for extracting bitumen from tar sands which comprises admixing a sludge stream containing at least 12% solids by weight with a hot water extraction process waste water stream containing at least 20% sand; settling the mixture in a settling zone to form an upper layer comprised of a sand-sludge mixture and dispersing said lower layer over a sand pile zone to provide additional sand layers thereon containing at least a part of the sludge in the interstices of said additional sand layers. -1-

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