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2 093 241

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C1

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IPC

(21) (22)

Application

94045299/25, 1994-12-27

(22)

Actual filing date

1994-12-27

(45)

Published

1997-10-20

(72)

Inventor

Voropanova L.A.Shvydko A.S.Rubanovskaja S.G.Krivchenko Ju.B.

(73)

Holder

Severo-Kavkazskij Gosudarstvennyj Tekhnologicheskij Universitet

METHOD OF REMOVING DISPERSED AND EMULSIFIED OILS FROM WASTE WATER Russian patent published in 1997 - IPC

Abstract RU 2093241 C1

FIELD: waste water treatment. SUBSTANCE: method consists in treating waste water by a reagent and subsequently purifying clarified water phase, in which method, as reagent, low- and/or insoluble calcium compounds are used. They are added to solution being treated in a few portions until emulsion is destroyed and solution clarified. Clarified solution is filtered, subjected to adsorption, and recycled, whereas deposits are calcined to recover calcium compounds to return into waste water treatment stage. According to invention, initial solution is treated at 20-50 C. EFFECT: increased purification degree and reduced cost of treatment due to recycling treating reagent. 2 cl, 1 dwg, 2 tbl

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RU 2 093 241 C1

Authors

Voropanova L.A.

Shvydko A.S.

Rubanovskaja S.G.

Krivchenko Ju.B.

Dates

1997-10-20—Published

1994-12-27—Filed

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