Sustainable Mining and Metallurgy

Based on the goal of efficient utilization of biogas from anaerobic fermentation of leachate in domestic waste incineration power plant, the comprehensive advantages of biogas power generation in resource utilization, operation stability and carbon emission reduction were demonstrated by comparing the co-combustion of biogas into furnace and independent power generation path. Through the case of a 1 200 t/ d waste incineration power plant, the biogas production, pretreatment process and power generation system design were discussed, and the energy saving effect and carbon emission reduction benefit of biogas power generation were analyzed. The results show that biogas power generation technology can achieve an average annual greenhouse gas emission reduction of 39 780 t CO2 e. In the absence of government subsidies, the annual power generation income of the project can reach 2. 43 million yuan. Biogas power generation can not only convert organic matter in waste into electrical energy, but also effectively avoid the emission of greenhouse gases such as methane, and has significant economic benefits and social benefit.