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Biogas is a methane-containing gas produced by anaerobic decomposition of an organic substrate. To date, biogas is a potential gaseous fuel - a source of electrical and thermal energy production, with the capabilities of which the whole world is not fully familiar. As an alternative energy source, it has many advantages and is a solution to many economic and environmental problems in the world, which could be a definite important step in improving the position of the Energy System of the world. In this article the construction of mathematical model of biothermal process of waste treatment is considered that gives the possibility to study in full the mechanism of this phenomenon, to determine and describe the relationship between the main parameters of the studied object with the aim of its automation, for example, to optimize technological processes in the microbiological industry. The methods of pig manure processing, which has both energy potential and economic, economic and nature protection potential, are also investigated.  Pig manure processing can be carried out in The following directions: obtaining organic fertilizer; fuel; fodder. For this purpose different methods of manure processing can be used, which can be divided into physical, chemical and biological. The article presents a detailed analysis of methods of pig manure processing, as well as positive aspects of using this method to obtain fuel, fertilizer and fodder from the energy and economic sphere.

ANALYSIS AND RESEARCH OF RESOURCE-SAVING TECHNOLOGIES FOR ANAEROBIC DIGESTION OF BIOMASS