填埋场覆盖系统对温室气体释放的影响

Impacts of Landfill Cover System on Green-house Biogas Emission

在没有沼气收集系统的前提下,填埋场覆盖土壤系统对减少填埋气体的释放非常重要。本文对填埋场应用的覆盖材料及其对填埋场气体释放的影响进行了综述。介绍了覆盖土壤对甲烷的氧化作用,主要包括甲烷氧化作用机理、影响因素等,同时对填埋气体中痕量气体(如N2O,odor、VOCs)在覆盖土壤中的降解进行了总结。

In the absence of biogas collection systems, cover soil system is highly important for the reduction of landfill gas （LFG） emission from landfills. The cover materials and its impact on the emission of LFG are reviewed in this paper. The roles of cover soil in methane oxidation are introduced, including the mechanisms of methane oxidation in landfill cover soils, the factors influencing the extent of methane. The degradations of trace gases （such as N2O, odor and VOCs） in cover soil are summarized. Further studying effective cover materials are advised to reduce the LFG emission.