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

0332070 强顿 本研究的主要目的是：1.在实地试验区评估覆盖在填埋场盖表面的生物覆盖物的性能。将建造一个生物覆盖层，由一米混合木屑和成熟堆肥庭院废物覆盖的30厘米砾石层组成，用于气体分散，并在2个年度周期内监测甲烷排放和氧化。评价生物过滤器消除被动喷口甲烷排放和减少非甲烷有机化合物排放的性能。基于性能的设计，这些系统将是本研究的产品。生物覆盖物在美国的潜在应用包括对于商业气体提取来说太小的垃圾填埋场，其中气体生产已经下降到超出商业利益的点，其中根据美国环保署清洁空气法案修正案不需要气体提取，泄漏区域或热点，或者在额外填充和最终气体提取之前将在相当长的一段时间内进行临时覆盖。

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.