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2 038 306

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Application

93031275/26, 1993-06-10

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Actual filing date

1993-06-10

(45)

Published

1995-06-27

(72)

Inventor

Volkov S.V.Zelenskaja L.A.Kadytis-Groznaja I.V.Karsakova T.V.Kopylova N.V.Laskin B.M.Chikmareva O.V.Sharikov Ju.V.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Institut Prikladnoj Khimii"

METHOD OF PREPARING COAGULATING AGENT ON THE BASIS OF ALUMINIUM MIXED BASED SALTS Russian patent published in 1995 - IPC

Abstract RU 2038306 C1

FIELD: water treatment. SUBSTANCE: coagulating agent is prepared by treatment of aluminium hydroxide with a mixture of hydrochloric and sulfuric acids in the presence of hydrofluoric acid or its salts at the following ratio of components, mole: (Cl-+SO24

-)/Al2O3 2-5; SO24
-/Cl- 0.16-0.21; F-/Cl- 0.05-0.07. Used aqueous solution of hydrochloric and sulfuric acids has the following ratio, mole: (HCl+H2SO4)/H2O 0.07-0.1. Process is carried out at heating and stirring following by separation of coagulating agent solution from nonreacted aluminium hydroxide. Method ensures to utilize waste and secondary products of organic synthesis without decrease of coagulating agent quality. EFFECT: improved method of coagulating agent preparing. 1 tbl

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RU 2 038 306 C1

Authors

Volkov S.V.

Zelenskaja L.A.

Kadytis-Groznaja I.V.

Karsakova T.V.

Kopylova N.V.

Laskin B.M.

Chikmareva O.V.

Sharikov Ju.V.

Dates

1995-06-27—Published

1993-06-10—Filed

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