Description: Das Projekt "Verbesserung mikrobiologischer Steuerung in geschlossenen Wassersystemen fuer die Papier- und Pappe-Industrie" wird vom Umweltbundesamt gefördert und von Papiertechnische Stiftung München durchgeführt. State of the art: The more a water system is closed the higher the benefit to the environment will be. State of the art is a 3-cycle system which saves in the average 90-95 percent of about 250 m3 water which are needed to produce one ton of paper. On the other hand the frequency of problems related to microorganisms and biofilming increases with the closure rate because of increasing nutrients and an excess of carbon. Currently biocides are being applied to inhibit or destroy microorganisms in the process water of paper machines to prevent slime formation, metal corrosion, bad odors and contamination in the product and to support paper machine operation in closed water systems. Being toxic, they usually impair the metabolic activities of microorganisms. For the same reason they can impose threats to man's health and to the environment. This is why improved microbiological control is needed to cope with these annoying microorganisms, but without negative impacts on human health. The key to environmentally friendly microbial control is the knowledge of microbial behavior and interaction in process waters. The understanding of the role of these microorganisms in deposition phenomena will enable the creation of improved treatments targeted to limiting bacterial sliming and proliferation, and an assessment of their performance. Against this background the project was broken down into six work packages. Because of the complexity of this project the knowledge and know how of research institutes, industry and university are combined to achieve synergy effects. The participating partners are CTP, KCL and PTS, the French, Finnish and German research institutes for the paper and pulp industry, as well as a department of the R and D center of Rhone Poulenc and a department of the Technical University in Compiegne. Objectives: The project aims to control microbial activity in closed water systems without applying hazardous substances. This requires an in-depth knowledge of microbial behavior and interaction in process waters. Therefore the general objectives are to understand the role of microorganisms in deposition phenomena as well as to describe the boundary conditions which lead to annoying slime formation. In addition, stressing physical, chemical and biotechnical treatments should be considered and investigated to cope with annoying microorganisms. Finally, promising technologies and techniques are to be derived in terms of microbiological and slime control and under an economic aspect.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: München ? Wasserwiederverwendung ? Biozid ? Kohlenstoff ? Nährstoff ? Papierindustrie ? Pflanzensamen ? Mikrobiologie ? Blei ? Regeltechnik ? Papier ? Papierherstellung ? Biofilm ? Pappe ? Betriebswasser ? Verfahrensoptimierung ? Chemische Analyse ? Korrosion ? Metall ? Geruch ? Internationale Zusammenarbeit ? Anlagenüberwachung ? Stand der Technik ? Wasserqualität ? Wasserinhaltsstoff ? Mikroorganismen ? Deposition ? Chemisches Verfahren ? Wasser ? Biologische Aktivität ? Menschliche Gesundheit ? Gefahrstoff ? Chemisch-physikalische Behandlung ? Umweltfreundliche Technologie ? Verpackung ? Wirtschaftliche Aspekte ? Chemische Aufbereitung ? Forschungseinrichtung ? Anlagenbetrieb ? Mikrobielle-Aktivitaet ? Schlammbildung ? MICO ?
Region: Bayern
Bounding boxes: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1996-05-01 - 1998-06-30
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