成都市长安垃圾填埋场填埋气体产气规律及其应用研究

摘要

通过成都长安垃圾填埋场现场打井抽气试验,对城市生活垃圾填埋气体的产气过程及规律进行研究,结果表明:该填埋场填埋气体主要成分为CH459.5％、CO237.5％,呈现出了较高的甲烷浓度.垃圾分解状态良好,保持了较为稳定的状态.采用IPCC指南推荐公式算出长安垃圾填埋场2010-2033年每年填埋气体产生速率为1 400～4 500m3/h,在2010年后的10 a中,该产气量能保证3 MW的发电量,具有较好的经济效益.%Through landfill gas (LFG) onsite extraction trial in Chengdu Chang'an Waste Landfill Site, the LFG generation process and regularities of municipal domestic waste were studied. The results showed that the main LFG components were CH4 (59. 5%) and CO2 (37. 5%). It showed a high level content of CH4, and good and stable state of waste degradation. According to the IPCC guide, the LFG output was 1 400～4 500 m3/h during 2010 to 2033, and it also can provide enough gas to generate electricity of 3 MW at least in the following 10 years after 2010 with better economic benefits.