GB811191A - An improved process for the prevention of the formation of slime in the manufacture of chemical or mechanical pulp and paper - Google Patents

An improved process for the prevention of the formation of slime in the manufacture of chemical or mechanical pulp and paper

Info

Publication number
GB811191A
GB811191A GB2177/57A GB217757A GB811191A GB 811191 A GB811191 A GB 811191A GB 2177/57 A GB2177/57 A GB 2177/57A GB 217757 A GB217757 A GB 217757A GB 811191 A GB811191 A GB 811191A
Authority
GB
United Kingdom
Prior art keywords
circulating water
slime
paper
manufacture
chemical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2177/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OSAKEYHTIO KESKUSLABORATORIO C
Original Assignee
OSAKEYHTIO KESKUSLABORATORIO C
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by OSAKEYHTIO KESKUSLABORATORIO C filed Critical OSAKEYHTIO KESKUSLABORATORIO C
Publication of GB811191A publication Critical patent/GB811191A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment

Abstract

811,191. Slime prevention. OSAKEYHTIO KESKUSLABORATORIO CENTRALLABORATORIUM A.B. Jan. 21, 1957 [Jan. 20, 1956],No. 2177/57. Class 96. Formation of slime, during the manufacture of chemical or mechanical pulp and paper, is prevented by adding intermittently to the circulating water a compound which, in aqueous solution, is completely or partially dissociated into bisulphite ions. The pH value of the circulating water may be maintained between 4 and 6 by adding sulphuric or formic acid, aluminium sulphate, sodium hydroxide, soda or lime. Sulphurous acid and sodium bisulphite are suitable compounds for use with neutral or alkaline circulating water; sodium sulphite is suitable for acidic water. The compound may be used at a concentration corresponding to 200 or 450 m.g. of sodium bisulphite per litre of circulating water, addition being made over a period of 30 or 15 minutes, respectively, at intervals of one day.
GB2177/57A 1956-01-20 1957-01-21 An improved process for the prevention of the formation of slime in the manufacture of chemical or mechanical pulp and paper Expired GB811191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE811191X 1956-01-20

Publications (1)

Publication Number Publication Date
GB811191A true GB811191A (en) 1959-04-02

Family

ID=20345420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2177/57A Expired GB811191A (en) 1956-01-20 1957-01-21 An improved process for the prevention of the formation of slime in the manufacture of chemical or mechanical pulp and paper

Country Status (1)

Country Link
GB (1) GB811191A (en)

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