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Method of sludge disposal related to the hot water extraction of tar sands

Patent ·
OSTI ID:7311652
;
A method for reducing the sludge content of a retention pond associated with the hot water process for extracting bitumen from tar sands is described. A sludge stream containing at least 12 percent solids by weight is mixed with a hot water extraction process waste water stream containing at least 20 percent sand. The mixture is settled in a settling zone to form an upper layer substantially reduced in mineral matter and a lower layer comprised of a sand-sludge mixture and dispersing the 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 the additional sand layers. 11 claims, 2 figures.
Assignee:
Great Canadian Oil Sands Ltd.
Patent Number(s):
US 4008146
OSTI ID:
7311652
Country of Publication:
United States
Language:
English

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Related Subjects

04 OIL SHALES AND TAR SANDS
040900* -- Oil Shales & Tar Sands-- Waste management
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
LAYERS
LIQUID WASTES
MANAGEMENT
OIL SAND TAILINGS
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PONDS
PROCESSING
SAND
SEPARATION PROCESSES
SLUDGES
SOLID WASTES
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
TAR
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE WATER
WASTES
WATER