Description: Das Projekt "Fortschrittliche Wasseraufbereitungsverfahren fuer den Nierenbetrieb von geschlossenen Kreislaeufen in der Papier- undKartonagenindustrie" wird vom Umweltbundesamt gefördert und von Papiertechnische Stiftung München durchgeführt. The European paper industry produces 70 million tons of paper annually and at the same time uses an average of 20 m3/t (1,4 billions m3 of water annually). Paper and board production therefore is one of the most water intensive industrial processes. The reduction of waste water has already led to a recirculation rate of more than 90 percent of the water and some milis even produce paper in a closed cycle. This results in severe quality deterioration and a drop of productivity (machine failures, sume formation, odor etc.) which often force papermakers to reopen their System again. Existing treatment technologies for closed loop operation show significant limitations. The objective of the proposed research work is to develop a suitable treatment technology (kidney technology) for closed cycle operation in order to realize eifluent free paper production. Two different approaches to integrated treatment are to be investigated: Pressurised thermophilic aerobic treatment with integrated biomass separation via membrane or flotation. Thermophilic anaerobic treatment combined with ultrafiltration. The technology to develop 5 to be operated at increased temperatures enabling paper production at 55-60 o C with significant positive effects on productivity (+ 5 percent) and energy consumption (higher 5 Prozent). Due to high biomass concentrations (20-25 g/l), high temperatures and the use of membranes the treatment technology will require less space in installation. Waste production can be reduced sharply in relation to existing technologies (deeper 40 to deeper 90 percent). The specific COD loading rate of the biological stage will be increased (higher + 50 percent) compared to conventional (mesophilic) treatment. The kidney technology should be operated with little energy consumption or should even produce energy. This process will significantly improve the quality of recycled water due to the use of membrane technology. The technology will be developed for systems producing packaging grades from 100 percent waste paper. The results can also be used to develop kidney technologies for higher paper grades and other branches of industry with high organic loads in waste waters (e.g. food etc.) and extensive water use. Lab scale tests for process development and pilot scale tests (in 2 paper mills) will be carried out for both technologies. A detailed mill scale implementation study will be conducted in the participating paper mills. The consortium comprises two research institutes with specific know how on paper production and biological degradation (PTS and CEIT), three suppliers of waste water treatment (Cadagua, Koch and Paques) and two paper mills as end users of kidney technology producing packaging grades (Saica and Oudegem).
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: München ? Kabeljau ? Wasserwiederverwendung ? Biopharmazeutikum ? Aerobe Bedingungen ? Altpapier ? Anaerobe Bedingungen ? Papierindustrie ? Pflanzensamen ? Temperaturabhängigkeit ? Ultrafiltration ? Betriebswasser ? Industrieabwasser ? Papier ? Papierherstellung ? Verfahrenskombination ? Industrie ? Membranfiltration ? Abwasserbehandlung ? Biologischer Abbau ? Schmutzfracht ? Energieeinsparung ? Energieverbrauch ? Filtration ? Flotation ? Geruch ? Abfallaufkommen ? Mühle ? Studie ? Wasseraufbereitung ? Wasserkreislauf ? Wassernutzung ? Abwasser ? Wasser ? Lebensmitteltechnologie ? Biomasse ? Membran ? Umweltfreundliche Technologie ? Produktivität ? Industrielles Verfahren ? Raumnutzung ? Forschungseinrichtung ? Kreislauffuehrung ? Abwasserminderung ?
Region: Bayern
Bounding boxes: 12.53381° .. 12.53381° x 47.795° .. 47.795°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1998-12-01 - 2001-11-30
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