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2 116 973

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C1

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IPC

(21) (22)

Application

93057280/25, 1993-12-24

(22)

Actual filing date

1993-12-24

(45)

Published

1998-08-10

(72)

Inventor

Khanin A.B.Glebov N.A.Ivanov A.D.Budykina T.A.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Kozhi

METHOD OF REMOVING SUSPENDED PARTICLES FROM MINERALIZED FAT- CONTAINING WASTE WATERS Russian patent published in 1998 - IPC

Abstract RU 2116973 C1

FIELD: waste water treatment. SUBSTANCE: invention relates to treating leather production waste waters either through forced flotation or by electroflotation and can be used for waste waters remaining after skin washing and soak operations. Invention is distinguished by carrying out flotation process at 75-85 C with preliminarily added aluminum-containing flocculant, e.g. aluminum sulfate. Method ensures improved cleaning of waste water containing not only fat and suspended substances but also large amounts of common salt used as skin preservative. EFFECT: improved cleaning quality. 1 tbl

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RU 2 116 973 C1

Authors

Khanin A.B.

Glebov N.A.

Ivanov A.D.

Budykina T.A.

Dates

1998-08-10—Published

1993-12-24—Filed

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