垃圾填埋场覆盖土CH_4氧化影响因素的研究进展

温室气体CH4是导致气候变化、引起全球变暖的因素之一。垃圾填埋场是CH4重要的人为释放源,而填埋场覆盖土CH4氧化能有效削减CH4排放。本文对近年来国内外在影响覆盖土CH4氧化的主要因素方面取得的研究成果进行了总结,提出影响覆盖土CH4氧化的主要因素有：土壤含水率、土壤pH、土壤温度、土壤碳氮含量、土壤粒径、气象条件、CH4及O2浓度、重金属及覆盖土材料。最后,对其后的研究方向进行了展望,指出通过优选覆盖土材料以及控制环境状态,可以有效提高覆盖土CH4氧化速率,减小垃圾填埋场CH4释放。

Research on Main Factors for CH4 Oxidation in Landfill Cover Soil

CH4,as a serious greenhouse gas,is one of the reasons for climate change and global warming.Munici-pal solid waste（MSW） landfill is a significant source of anthropogenic CH4,but the use of landfill cover soil（LCS）is seen as a key technology for the mitigation of CH4 emissions from landfill.In this paper,research progress aboutthe main factors affecting CH4 oxidation in LCS were reviewed,and the major factors influencing CH4 oxidation po-tential in LCS included soil water content,soil pH,soil temperature,soil carbon and nitrogen content,soil particle,weather condition,CH4 and O2concentrations,metal content and landfill final cover material.Finally,the future re-search directions of MOP in LCS were discussed,and through optimizing cover material and controlling environ-ment condition,MOP can be effectively improved and mitigation of CH4 emissions from MSW landfills can be de-creased.