DISPOSAL OF ORGANIC AGRICULTURAL WASTE WITH BIOFERTILIZERS AND BIOGAS PRODUCTION

This scientific article presents the possibilities of improving innovative energy-saving solutions in the agricultural sector, and also studies the issues of energy consumption management and energy efficiency. The article presents the results of experimental studies of a mobile biogas plant operating in the thermophilic fermentation mode (at a temperature of 55°C) of organic waste, obtaining biogas and organic fertilizers. Experimental data showed that the composition of the obtained biogas includes: 67.8% methane (CH4), 28% carbon dioxide (CO2), 3% hydrogen (H2), 1% nitrogen (N2), 0.1% water (H2O) and hydrogen sulfide (H2S) at a level of 0.03%. During the 16-day study, the efficiency of processing organic waste from various types of livestock farming was assessed, resulting in the following volumes of biogas: 10 m³ from pig manure, 7 m3 from chicken manure, 5 m³ from horse manure and 8 m³ from cattle manure. The results of a comprehensive analysis of the obtained high-quality organic fertilizer for agrochemical, microbiological, sanitary-parasitological and sanitary-entomological indicators were carried out in a certified laboratory of Federal State Budgetary Institution “Tatar Interregional Veterinary Laboratory”. After processing organic waste in a biogas plant, the nitrogen content in the substrate increased by 3.5 times compared to the original material. The pH value of the obtained fertilizer was 7, which indicates a neutral pH. The phosphorus content reached 2.3%, and potassium - 1.3%. These data highlight the potential of using organic waste as a source of renewable energy, which can contribute to sustainable agricultural development and reduce the negative impact on the environment.