OPTIMIZE methane fermentation of cattle manure with increased content of SOLID Substances

Abstract

The restructuring of farming in Bulgaria include the organization of relatively small farms for conventional and organic
farming, which receives fertilizer increased dry matter content. The studies provide information on the content of dry and organic matter in fertilizer produced by farm 12 dairy cows conventionally. In view of using compost as a soil improver in feed
production is applied a mathematical model to identify the optimum parameters of anaerobic digestion of fertilizer judged
by two criteria: maximum degradation rate of the substrate (environmental) and the maximum degree of efficiency using
fermentor /economic/. On the basis of laboratory test results in the installation of biogas plants are set optimal parameters of
the technology (environmental): temperature, pH, content of dry and organic matter, time of stay.