Description: Das Projekt "Development of strategies for increase of plant availability of membrane bioreactors in waste paper using paper mills" wird vom Umweltbundesamt gefördert und von Papiertechnische Stiftung München durchgeführt. The objective of the research project is an increased availability of membrane bioreactor systems with submerged ultra filtration membranes. This aim should be gained by identification of organic und inorganic substances, MBR operating conditions and sludge properties causing membrane layers. Knowing the substances efficient cleaners and cleaning strategies should be elaborated and tested in continuous operation on-site. Guideline values should be defined showing the limits for economic operation. Inappropriate criteria will be expressed if waters, substances or operating conditions affecting the plant performance avoiding economic operation. Effluent samples from 10 different paper mills have been examined in laboratory tests using different membrane material, pressure and filtration volume. Filterability seems to depend on the content of soluble ingredients. Filter material, pore size and pressure have less influence. criteria for estimation of filterability have been established based on the flux rate. The developed method for early evaluating filterability of effluents can only be used as a rough estimation. Trials with laboratory MBR plant had been operating on-site in three mills. Operation depends on the quality of the biological treatment process and the water composition. Some water ingredients, e.g. acrylates might cause problematic layers in case of polymerisation. Incomplete biological degradation forces development of EPS. EPS is a basis for biofilm and therefore a serious factor causing biofouling. Sole scaling is the least blocking problem. It can be removed using effective reagents, defined by analytic examination of effluent ingredients and laboratory trials. Fouling and biofouling effects are more serious in treatment. Therefore lifting the overlay in the first step is most important than treatment with the right reagents. Using the effective reagents is important for the second step. In most cases fouling/biofouling layers are more difficult in removing. Early cleaning improves the cleaning success.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Klärschlammkonditionierung ? München ? Biologische Abwasserreinigung ? Acrylat ? Abwasserreinigung ? Abwasserschlamm ? Altpapier ? Papierindustrie ? Ultrafiltration ? Membranbioreaktor ? Pflanzenverfügbarkeit ? Aufbereitungstechnik ? Betriebsdaten ? Biofilm ? Bioreaktor ? Filter ? Materialprüfung ? Membranverfahren ? On-Site-Verfahren ? Papier ? Schlamm ? Organisches Material ? Anorganische Verbindung ? Verfahrensparameter ? Verfahrensoptimierung ? Biofouling ? Membranfiltration ? Laborversuch ? Polymerisation ? Biologischer Abbau ? Wasserqualität ? Wasserinhaltsstoff ? Wirkungsgrad ? Biologische Behandlung ? Stoff ? Messdaten ? Mühle ? Abwasser ? Forschungsprojekt ? Bewertungsverfahren ? Richtwert ? Biomasse ? Membran ? Gewässer ? Abdeckung ? Anlagenbetrieb ? Rechte ? Altstoff ? Eignungsprüfung ? Filtereigenschaft ? Filtermaterial ? Optimieren der Fahrweise ? Altpapierverarbeitung ?
Region: Bayern
Bounding box: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2006-08-01 - 2008-07-31
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