Methane emission from active terrace of municipal solid waste landfills
生活垃圾填埋场填埋作业台阶甲烷排放研究

To investigate the methane emission quantity from municipal solid waste landfills during landfilling operation in China, Default Methodology(DM)model, Landfill Gas Emission Model(LandGEM)and static chamber method were used to estimate the rates of methane emission from active terrace of Hangzhou Tianziling municipal solid waste landfill. The results were 3.65×103, 1.52×103 and 1.11×10 3m3·h-1 respectively. The calculated result of LandGEM model was more close to that of the field measurement. Methane produced during the first two years accounted for 50% of the total methane production from the municipal solid waste landfill. However, only 43% of the gas was utilized by the gas collection system, which meant that 29% of the total methane quantity released without control or utilization during the two years of landfilling operation. Therefore, control of methane emission during landfilling operation was important for reducing methane emission from municipal solid waste landfills in China.