METHOD OF WATER TREATMENT Russian patent published in 1997 - IPC

Abstract RU 2086511 C1

FIELD: sewage treatment. SUBSTANCE: invention relates to sewage treatment containing sodium sulfate and chloride and water preparing. Method involves cooling stage and, additionally, evaporation of sodium chloride. Residual solution is mixed with residual mother liquors from all stages of salts crystallization. Then this solution is kept up to sodium chloride dissolving and fed to the cooling stage followed by isolation of sodium sulfate decahydrate. EFFECT: improved method of treatment, high purity of salts. 3 cl, 1 tbl

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RU 2 086 511 C1

Authors

Jarushina I.S.

Mel'Kov A.D.

Skorov A.K.

Kiseleva L.V.

Dates

1997-08-10—Published

1992-04-09—Filed