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Gewählte Publikation:

Resch, C; Grasmug, M; Smeets, W; Braun, R; Kirchmayr, R; .
(2006): Optimised anaerobic treatment of house-sorted biodegradable waste and slaughterhouse waste in a high loaded half technical scale digester.
Water Sci Technol. 2006; 53(8):213-221 FullText FullText_BOKU

Abstract:
Anaerobic co-digestion of organic wastes from households, slaughterhouses and meat processing industries was optimised in a half technical scale plant. The plant was operated for 130 days using two different substrates under organic loading rates of 10 and 12 kgCOD.m(-3).d(-1). Since the substrates were rich in fat and protein components (TKN: 12 g.kg(-1)) the treatment was challenging. The process was monitored on-line and in the laboratory. It was demonstrated that an intensive and stable co-digestion of partly hydrolysed organic waste and protein rich slaughterhouse waste can be achieved in the balance of inconsistent pH and buffering NH4-N. In the first experimental period the reduction of the substrate COD was almost complete in an overall stable process (COD reduction > 82%). In the second period methane productivity increased, but certain intermediate products accumulated constantly. Process design options for a second digestion phase for advanced degradation were investigated. Potential causes for slow and reduced propionic and valeric acid degradation were assessed. Recommendations for full-scale process implementation can be made from the experimental results reported. The highly loaded and stable co-digestion of these substrates may be a good technical and economic treatment alternative.
Autor*innen der BOKU Wien:
Braun Rudolf
Kirchmayr Roland
BOKU Gendermonitor:

Find related publications in this database (using NML MeSH Indexing)
Abattoirs*;Bacteria, Anaerobic/metabolism*;Biodegradation, Environmental;Fermentation;Garbage*;Hydrogen-Ion Concentration;Kinetics;Methane/biosynthesis;Organic Chemicals/metabolism;Proteins/metabolism;Refuse Disposal/methods*;Waste Management/methods*;

Find related publications in this database (Keywords)
anaerobic digestion
half technical scale
high nitrogen concentrations
slaughterhouse wastes


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