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2 091 331

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IPC

(21) (22)

Application

94021720/25, 1994-06-08

(22)

Actual filing date

1994-06-08

(45)

Published

1997-09-27

(72)

Inventor

Varezhkin Ju.M.Mikhajlova A.N.Stetsik N.Ja.Kosareva M.S.

(73)

Holder

Gosudarstvennyj Nauchno-Issledovatel'Skij Institut Khimii I Tekhnologii Ehlementoorganicheskikh Soedinenij

METHOD OF SEWAGE BIOCHEMICAL TREATMENT Russian patent published in 1997 - IPC

Abstract RU 2091331 C1

FIELD: sewage treatment. SUBSTANCE: method involves the use of an aqueous solution of 1,3-bis-[dimethyl-(t-butylamino)-silyl]-2,2,4,4- -tetramethylcyclodisilazane at final concentration in treatment equipments 0.015-0.050 mg/l. Method ensures to improve quality of sewage from organic impurities by 1.7-2.1-fold, retain constant aeration period and decrease aeration by 1.44-1.71-fold at previous purification degree. EFFECT: enhanced effectiveness of treatment. 4 tbl

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RU 2 091 331 C1

Authors

Varezhkin Ju.M.

Mikhajlova A.N.

Stetsik N.Ja.

Kosareva M.S.

Dates

1997-09-27—Published

1994-06-08—Filed