PREVENTION OF STARCH DEGRADATION IN PULP, PAPER OR BOARD MAKING PROCESSES

The invention relates to biocidal systems comprising zinc ions and an oxidizing or non-oxidizing biocide, their use, and methods for preventing or decreasing starch degradation in starch-containing process waters from pulp, paper or board production processes. La présente invention concerne des syst...

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Hauptverfasser:	KOLARI, MARKO, EKMAN, JAAKKO, IKAVALKO, SATU
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMISTRY FISHING FORESTRY HUMAN NECESSITIES HUNTING IMPREGNATING OR COATING OF PAPER METALLURGY PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TRAPPING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The invention relates to biocidal systems comprising zinc ions and an oxidizing or non-oxidizing biocide, their use, and methods for preventing or decreasing starch degradation in starch-containing process waters from pulp, paper or board production processes. La présente invention concerne des systèmes biocides comprenant des ions zinc et un biocide oxydant ou non, leur utilisation, et des procédés permettant d'éviter ou de réduire la dégradation de l'amidon dans des eaux de traitement contenant de l'amidon provenant de procédés de fabrication de pâte à papier, de papier ou de carton.