• Journal of Animal Environmental Science
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• v.8 no.1
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• pp.1-8
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• 2002

Real sized open type biofilter system was manufactured to control the odor generated from the agitated composting system which composted swine manure and sawdust mixtures. The aim of this research was to develop a biofilter system using matured compost and to evaluate the performance of the biofilter system. Average ammonia reduction rate through the biofilter was 84% during about two month period of composting. The maximum ammonia concentration after filtering was 45ppm lower than allowable value of 50ppm. It was concluded that compost can be used as a biofilter materials.