Biologische Vorbehandlung von zu deponierenden Abfaellen. Stabilisierung von Restmuell durch mechanisch-biologische Behandlung und Auswirkungen auf die Deponierung Endbericht

Requirements with regard to process regulation and treatment time were investigated at the mechanical-biological waste treatment plant (MBT) of Quarzbichl. Both aerobic and anaerobic treatment phases respectively their combination were taken into account. The aim of the treatment was to obtain a stabilized product which can be landfilled in an environmentally friendly way. To characterize the landfill behaviour adequate testing methods were developed and appropriate threshold values were derived: - Respiration activity over 96 hours #<=# 5 mg O_2/g dm - Dissolved organic carbon in eluate #<=# 300 mg/l. Based on extensive sieving and sorting analyses basic data were elaborated about untreated waste and the output of different mechanical treatment techniques. They supply information on the potential of valuable fractions and on the requirements for waste separation into a coarse fraction with high energy content and a fine-size fraction to be treated biologically. With a comprehensive life cycle assessment it could be proved that MBT is at least equivalent to waste incineration (with respect to the environmental impact). (Compared with the legislative regulations MBT is considerably environmentally friendlier than incineration.). (orig.)SIGLEAvailable from TIB Hannover: F00B129 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman