Inexpensive Biocover and Biofilter Approaches for Effective Reduction of Methane Emissions from Landfills

0332070 Chanton拟议研究的目标是：1.在野外试验区评估覆盖在垃圾填埋场盖子表面的生物覆盖物的性能。将建造一个生物覆盖物，其中包括一层30厘米的砾石，用于气体扩散，上面覆盖一米混合木屑和成熟的堆肥庭院废物，并在两年周期内监测甲烷排放和氧化情况。评估生物过滤器在消除甲烷排放和减少被动通风口的非甲烷有机化合物(NMOC)排放方面的性能。这些系统的基于性能的设计将是这项研究的产物。生物覆盖物在美国的预期应用包括垃圾填埋场，这些垃圾填埋场太小，不适合商业天然气开采，天然气产量已经下降到超过商业利益的程度，根据美国环境保护局清洁空气法修正案，气体提取不是必须的，泄漏地区或热点地区，或者临时覆盖物在额外填充和最终气体提取之前将保留相当长的一段时间。

0332070 Chanton The objectives of the proposed research are to:1. Evaluate the performance of biocovers placed over the surface of landfill caps in field test plots. A biocover consisting of a 30 cm layer of gravel for gas dispersion overlain by a meter of mixed woodchips and mature composted yard waste would be constructed and monitored for methane emission and oxidation over 2 annual cycles.2. Evaluate the performance of biofilters to eliminate methane emissions and attenuate non methane organic compound (NMOC) emissions from passive vents. Performance based designs for these systems would be the product of this research. Prospective applications of biocovers in the U.S. include landfills which are too small for commercial gas extraction, where gas production has declined beyond the point of commercial interest, where gas extraction is not required under U.S. EPA Clean Air Act Amendments, leaky areas or hot spots, or where interim cover will be in place for a substantial period of time before additional filling and eventual gas extraction.