Shapovalov Y. Improvement of Chicken Manure Anaerobic Digestion Biotechnology With Reduced Wastewater Production

The dissertation is devoted to the study of approaches to reducing the amount of wastewater formation in the process of chicken manure anaerobic digestion. The possibility of recirculating the sorbent in the reactor to produce ammonia has been proposed and substantiated. Potential approaches for ammonia management have been substantiated. The possibility of ammonia regeneration was investigated and the peculiarities of the process were determined. It is revealed that the degree of decomposition of diammonium phosphate depends on the temperature. It has been proved that dry anaerobic digestion of chicken manure is characterized by low stability due to high concentrations of ammonium Nitrogen and hydrogen sulfide. It is proposed to increase the sorbent area to provide increasing of the efficiency of ammonia sorption. Biogas reactor with huger sorbent area was developed. It differs from the previously proposed reactor by the increasing of the sorption tanks number.