Results of Research on Technological Process of Sewage Sludge Treatment in Bioreactor

This paper analyzes the design of an experimental biogas plant for organic waste treatment. In the experimental studies, sewage sludge was used as organic waste. Based on the experimental research program, the volume of biogas produced in the plant under mesophilic mode of anaerobic digestion was determined during the period of experiments. During the experiments, the periodic mesophilic and thermophilic mode of anaerobic digestion of sewage sludge in the bioreactor was maintained, the paper presents the results of experiments in the mesophilic mode of anaerobic digestion. In the process of digestion of sewage sludge, in mesophilic mode, the presence of biogas was determined using a gas analyzer «Hobbit-T». During the operation of the experimental bioreactor the significant factors affecting the process of biogas production in the plant were investigated. The article considered the principle of operation and design of the biogas plant. Experimental studies of anaerobic digestion of sewage sludge in the bioreactor under mesophilic mode with regard to the optimization criterion of the technological process were considered. Preparation of the biogas plant for the operational mode and further operation at the sewage treatment facilities of water channels of the Udmurt Republic is carried out. The algorithm of experimental research is presented, the mesophilic mode of anaerobic digestion and the results of experiments are considered. The use of energy-efficient technology of anaerobic digestion of sewage sludge using an experimental biogas plant allows to obtain biogas from organic wastes, as well as to reveal the influence of the process activator on the operation of the experimental bioreactor for sewage sludge treatment. The biogas produced in the bioreactor will partially provide heat energy for sewage treatment facilities of the Udmurt Republic during emergency power outages. The sewage sludge processed in the biogas plant can be used as soil when applied in «green» technologies.