The objective of this study was to compare methane production and characteristics of digested material in anaerobic digestion concepts according to the Animal By-Products Regulation (ABP-Regulation) of the EC (hygienisation of biowaste for 1 hour at 70 °C, particle size <12 mm) and Finnish national regulations (treatment temperature 55 °C, feeding interval 24 h, hydraulic retention time (HRT) 20 d, particle size <40 mm) and with small variations in treatment methods for treating manure and biowaste. Moreover, the survival of three different salmonella bacteria in these processes was studied. Hygienisation of biowaste prior to digestion at 35 °C enhanced methane production by 14–18% compared to similar treatment without hygienisation. The differences in treatment temperature, HRT and hygienisation of biowaste prior to digestion did not significantly affect the characteristics of digested material. The concepts according to the ABP-Regulation and Finnish national regulations were effective in destroying salmonella bacteria to an undetectable level.
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Research Article|
April 01 2006
Co-digestion of manure and biowaste according to the EC Animal By-Products Regulation and Finnish national regulations
T. Paavola;
*Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland,
E-mail: teija.paavola@jyu.fi; jukka.rintala@jyu.fi
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E. Syväsalo;
E. Syväsalo
**Agrifood Research Finland, Soils and Environment, FI-31600 Jokioinen, Finland
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J. Rintala
J. Rintala
*Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland,
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Water Sci Technol (2006) 53 (8): 223–231.
Citation
T. Paavola, E. Syväsalo, J. Rintala; Co-digestion of manure and biowaste according to the EC Animal By-Products Regulation and Finnish national regulations. Water Sci Technol 1 April 2006; 53 (8): 223–231. doi: https://doi.org/10.2166/wst.2006.253
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