At VAM waste treatment company in Wijster (the Netherlands) a demonstration is in progress of bioreactor technology for treatment of the mechanically separated organic residue (MSOR) of a waste separation plant. In order to explore the long-term behaviour of MSOR in a bioreactor additional laboratory-scale research is initiated, which runs analogously with the bioreactor demonstration. In laboratory-scale test columns the anaerobic degradation processes are enhanced, and full biological stabilization was expected within a year. This paper examines the objectives, experimental set-up and first results from the laboratory-scale research.
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