Treatment of aqueous drilling mud effluents containing lignosulf

Details Treatment of aqueous drilling mud effluents containing lignosulf Treatment of aqueous drilling mud effluents containing lignosulf

1989-11-27

1992-06-09

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210727, 210735, 210738, 210199, C02F 156

Patent

active

051204495

ABSTRACT:
Method for treating drilling effluents containing ligno-sulfonates wherein, successively, sulfuric acid is injected in order to cause coagulation, a cationic polyelectrolyte is injected to cause a flocculation and solids are separated from the liquid by centrifugation or dewatering compaction.

REFERENCES:
patent: 1951647 (1934-03-01), Cooke
patent: 2190596 (1940-02-01), Dorr
patent: 3023162 (1962-02-01), Fordyce et al.
patent: 3433312 (1969-03-01), Burdyn et al.
patent: 3737037 (1973-06-01), Bone, III
patent: 4330450 (1982-05-01), Lipowski et al.
patent: 4353803 (1982-10-01), Dover, Jr.
patent: 4482459 (1984-11-01), Shiver

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