垃圾填埋场覆层甲烷生物减排技术综述

垃圾填埋场服役期间会因微生物降解有机物释放大量甲烷，即使有气体收集装置，仍有甲烷逃逸到大气中。甲烷气体是造成温室效应的重要气体之一。甲烷氧化菌是以甲烷为唯一碳源的微生物，具有其优良的甲烷氧化效能。在中小型填埋场、老旧填埋场及开启集气装置已不再经济的大型填埋场，可在填埋场覆层中掺入甲烷氧化菌，对甲烷进行生物氧化，减少垃圾填埋场的甲烷释放量，从而减少温室效应，达到环保的目的。文章回顾了近些年国内外对甲烷氧化菌及其甲烷氧化效能的相关研究，对甲烷氧化菌的分类及其甲烷氧化机理，影响甲烷氧化菌氧化效能的因素以及甲烷氧化菌在垃圾填埋场中的应用等研究成果进行了总结，并对其今后的研究和应用提出了展望。

Research Progress of Methane Bio-mitigation Technology in Landfill Cover

During the service life of landfills, large amounts of methane will be released due to the degradation of organic matter by microorganisms. Even with the gas collection devices, methane still escapes into the atmosphere. Methane gas is one of the important gases that cause the greenhouse effect. Methane-oxidizing bacteria is a microorganism that takes methane as the only carbon source, and has an excellent methane oxidation efficiency. In small and medium-sized landfills, old landfills and largelandfills where it is no longer economical to turn on gas collecting devices, the landfill final cover soil can be mixed with methaneoxidizing bacteria to oxidize methane gas and reduce the release of methane from landfill, so as to reduce the greenhouse effect and achieve the purpose of environmental protection The relevant research on methane oxidation efficiency of methane oxidizing bacteria at home and abroad was reviewed. The classification of methane-oxidizing bacteria and its mechanism of methane oxidation, the factors that affect the oxidation efficiency of methane-oxidizing bacteria and the application of methane-oxidizing bacteria in landfill sites are summarized, and the future research and application area of methane-oxidizing bacteria is outlined.