Method for dewatering the sludge layer of an industrial process

Details Method for dewatering the sludge layer of an industrial process Method for dewatering the sludge layer of an industrial process

1982-01-08

1983-08-16

Castel, Benoit

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210731, 210803, 210901, 208 11LE, C02F 154, C08L 302

Patent

active

043990380

ABSTRACT:
In order to compress the sludge layer of an industrial process tailings pond, in a naturally occurring fines-containing body of water, beyond the density which it will naturally reach after treatment by the addition of a specific hydrolyzed starch additive, sand is distibuted over the sludge layer as a water permeable surcharge which, by weight, further compacts the sludge to obtain additional dewatering. The hydrolyzed starch additive is selected from a specific family and provides improved shear strength and permeability characteristics to the sludge layer such that it can support the sand surcharge.

REFERENCES:
patent: 3082173 (1963-03-01), Horvitz
patent: 3414512 (1968-12-01), Johnson
patent: 3931006 (1976-01-01), Baillie et al.
patent: 3953318 (1976-04-01), Baillie et al.
patent: 3962079 (1979-06-01), Hunt et al.
patent: 4008146 (1977-02-01), Bain et al.
patent: 4018664 (1977-04-01), Bain et al.
patent: 4289540 (1981-09-01), Yong et al.

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