INVESTIGATION OF JOINT UTILIZATION OF MEAT PROCESSING WASTE AND RICE HUSK BY ANAEROBIC DIGESTION

The main position of the Environmental Protection Policy strategy and environment for sustainable development of the country provide a comprehensive solution to the problems of sustainable development of the economy and improvement of the environment. Current rate of development of grain-processing and meat-processing industries makes the issue of effective and cost-effective ways of waste disposal more actionable. According to the conceptual principles of the re-processing of raw waste recycling waste meat processing industry, which includes waste water, which are formed directly in the production of meat and cattle manure requires special attention. Biotechnological methods of processing are considered promising direction of recycling food production wastes. One of such methods is anaerobic digestion, which is continuous multi-component process of organic materials transformation to finished products – biogas containing methane, water vapor and carbon dioxide, which is provided by a microbial communities activity. The aim of this study was to investigate the joint utilization of rice husk, manure and meat processing manufacture sewage by anaerobic digestion in a laboratory anaerobic batch UASB bioreactor (Upflow Anaerobic Sludge Blanket reactor) for 10 days. During the study, resulting in anaerobic reactions were identified parameters of influence of the substrate composition on the efficiency of decomposition of organic matter, biogas and methane yield. A series of experiments anaerobic fermentation of substrates was carried out with different weight ratio of manure, waste water and rice husk at mesophilic temperature conditions (36 ± 1°C). To determine the optimal weight proportions of components in mixed waste as a substrate for fermentation in an anaerobic bioreactor, we assessed the degree of organic matter degradation in manure, rice husks and waste waters and estimated negative impact of volatile fatty acids in the course of anaerobic reactions. After benchmarking fermentation mono-substrates and mixtures, it was proved the effectiveness of the use of mixed substrates for methane and to increase the degree of biodegradability of organic substances waste.