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2 155 720

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IPC

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Application

2000102328/12, 2000-02-02

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Start date

2000-02-02

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Actual filing date

2000-02-02

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Published

2000-09-10

(72)

Inventor

Lapin V.V.Kudajnetov P.Kh.Volkov V.A.Kapanchan A.T.Evlakhova R.A.Samozhenkov V.M.Levin V.P.Khramov V.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut Bumagi"Zakrytoe Aktsionernoe Obshchestvo

METHOD OF TREATING WASTE WATER FROM PRODUCTION OF FIBROUS INTERMEDIATE PRODUCTS FOR PAPER AND CARDBOARD MANUFACTURE Russian patent published in 2000 - IPC

Abstract RU 2155720 C1

FIELD: paper-and-pulp industry. SUBSTANCE: invention, in particular, relates to production of defibering, refiner, thermomechanical, and chemical-thermomechanical pulp. To waste water are added coagulator aluminum chloride hydroxide (aluminum oxide-to-chlorine ratio 0.71-0.92), then clump from flotation traps of intrashop purification of excess cardboard production return water, and then remaining amount of coagulator. 30- 180 s after the second addition of coagulator, waste water is supplemented by polyacrylamide flocculant, in particular anionic polyacrylamide with molecular weight (9-15) 106. EFFECT: increased degree of purification. 2 cl, 3 ex

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RU 2 155 720 C1

Authors

Lapin V.V.

Kudajnetov P.Kh.

Volkov V.A.

Kapanchan A.T.

Evlakhova R.A.

Samozhenkov V.M.

Levin V.P.

Khramov V.A.

Dates

2000-09-10—Published

2000-02-02—Filed

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