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2 090 515

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IPC

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Application

93039408/25, 1993-08-16

(22)

Actual filing date

1993-08-16

(45)

Published

1997-09-20

(72)

Inventor

Bannikov V.V.L'Vovich F.I.Sova V.V.Frajman D.B.

(73)

Holder

Bannikov Vladimir Vasil'Evich

METHOD OF PROCESSING WASTE WATER FROM CHITOSAN PRODUCTION Russian patent published in 1997 - IPC

Abstract RU 2090515 C1

FIELD: waste water treatment. SUBSTANCE: waste water from decalcination stage is mixed with that from deproteination stage to yield solution containing 1.5-2.5 g/l sodium chloride. Solution is further brought in contact with solid sodium chloride to increase its concentration to 310-350 g/l and then subjected to electrolysis with separator. Produced hydroxide is utilized in chitosan production and chlorine in production of hydrochloric acid and commercial sodium hypochlorite aqueous solution. EFFECT: achieved wasteless chitosan production. 4 cl

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RU 2 090 515 C1

Authors

Bannikov V.V.

L'Vovich F.I.

Sova V.V.

Frajman D.B.

Dates

1997-09-20—Published

1993-08-16—Filed

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