The research of biogas exit at different temperatures of the mesophilic regime in the small volume biogas installations

The article provides the results of studies of biogas exit from manure of cattle at various temperatures of mesophilic mode of an anaerobic fermentation. The obtained data are the basis for the choice of the optimal temperature for fermentation in the small volume biogas installation (0,7 m3) applicable for small livestock farms. The paper presents the basic parameters of biogas installations. It gives some data on amount of annually emitted manure of cattle. As the result of the conducted laboratory researches indicators on a biogas exit in liters from installation per day and on a biogas exit in m3 from 1 kg of organic dry substance have been received. As this technology is used in a small biogas installation with capacity of 0.7 m3, so temperature of 32 °C is the most rational based on the ratio of costs of heat power and to a biogas exit.