SLIME CONTROL METHOD IN WATER SYSTEM

PROBLEM TO BE SOLVED: To suppress generation of slime in a wide pH range including a high pH region and also to peel and remove the slime. SOLUTION: This slime control method consists of being allowed to work a reaction mixture containing hypobromous acid and/or its water soluble salt and an N-monoc...

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Bibliographic Details
Main Authors YASUDA KOJI, ITO KENICHI, NAKAI TAKUYA, TOGO NAOKO
Format Patent
LanguageEnglish
Published 13.02.2001
Edition7
Subjects
APPARATUS THEREFOR
CHEMISTRY
IMPREGNATING OR COATING OF PAPER
METALLURGY
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
PULP COMPOSITIONS
REGENERATION OF PULPING LIQUORS
TEXTILES
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PROBLEM TO BE SOLVED: To suppress generation of slime in a wide pH range including a high pH region and also to peel and remove the slime. SOLUTION: This slime control method consists of being allowed to work a reaction mixture containing hypobromous acid and/or its water soluble salt and an N-monochloro-5,5-dialkyl-substituted hydantoin which are obtained by reacting hypochlorous acid and/or its water soluble salt, bromide releasing bromide ions in water and a 5,5-diazoalkyl-substituted hydantoin, in water. Also, another slime control method consists of forming hypobromous acid and/or its water soluble salt, and an N-monochloro-5,5-dialkyl-substituted hydantoin, in a water system, by that hypochlorous acid and/or its water soluble salt, bromide for releasing bromide ions in water and 5,5-dialkyl-substituted hydantoin are added to a water system and mixed.
Bibliography:Application Number: JP19990218647