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Application

96116787/02, 1996-08-15

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Actual filing date

1996-08-15

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Published

1998-02-10

(72)

Inventor

Voropanova L.A.Kuznetsov O.K.Pozhiganova G.V.Meshkova T.E.

(73)

Holder

Severo-Kavkazskij Gosudarstvennyj Tekhnologicheskij Universitet

METHOD FOR PRECIPITATION OF IONS OF HEAVY METALS FROM INDUSTRIAL SEWAGE WATERS Russian patent published in 1998 - IPC

Abstract RU 2104316 C1

FIELD: treatment of industrial and household sewage waters fro removal of heavy metals ions. SUBSTANCE: initial solution is subjected to neutralization to pH value within 4.0 $$$ pH $$$ 12.0. Simultaneously introduced singly is bentonite clay in amount not more 5.0 g/cu.dm. Clarified aqueous phase is separated by decanting, and precipitate is multiply subjected to contact with next portions of initial solution up to ratio of L:S $$$ 2:1 with subsequent decanting of clarified aqueous phase. EFFECT: higher efficiency. 3 cl, 1 dwg, 7 tbl

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RU 2 104 316 C1

Authors

Voropanova L.A.

Kuznetsov O.K.

Pozhiganova G.V.

Meshkova T.E.

Dates

1998-02-10—Published

1996-08-15—Filed

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