Institute of Environmental Technology and Energy Economics, Hamburg University of Technology, Harburger Schlossstr. 36, D-21079 Hamburg, Germany.
Waste Manag. 2010 Apr;30(4):702-6. doi: 10.1016/j.wasman.2009.11.014.
Landfills are some of the major anthropogenic sources of methane emissions worldwide. The installation and operation of gas extraction systems for many landfills in Europe and the US, often including technical installations for energy recovery, significantly reduced these emissions during the last decades. Residual landfill gas, however, is still continuously produced after the energy recovery became economically unattractive, thus resulting in ongoing methane emissions for many years. By landfill in situ aeration these methane emissions can be widely avoided both, during the aeration process as well as in the subsequent aftercare period. Based on model calculations and online monitoring data the amount of avoided CO(2-eq). can be determined. For an in situ aerated landfill in northern Germany, acting as a case study, 83-95% (depending on the kind and quality of top cover) of the greenhouse gas emission potential could be reduced under strictly controlled conditions. Recently the United Nations Framework Convention on Climate Change (UNFCCC) has approved a new methodology on the "Avoidance of landfill gas emissions by in situ aeration of landfills" (UNFCCC, 2009). Based on this methodology landfill aeration projects might be considered for generation of Certified Emission Reductions (CERs) in the course of CDM projects. This paper contributes towards an evaluation of the potential of landfill aeration for methane emissions reduction.
垃圾填埋场是全球范围内甲烷排放的主要人为来源之一。在过去几十年中，欧洲和美国的许多垃圾填埋场都安装和运行了气体提取系统，其中通常包括能源回收的技术设施，这大大减少了这些排放。然而，在能源回收变得无利可图之后，仍然会持续产生残余的垃圾填埋气，从而导致多年来持续的甲烷排放。通过原位填埋气曝气，可以在曝气过程中和随后的后期管理期间广泛避免这些甲烷排放。基于模型计算和在线监测数据，可以确定避免的 CO2-eq 的量。对于德国北部的一个作为案例研究的原位曝气垃圾填埋场，在严格控制的条件下，温室气体排放潜力的 83-95%（取决于覆盖层的类型和质量）可以得到减少。最近，联合国气候变化框架公约（UNFCCC）批准了一项关于“通过原位填埋气曝气避免垃圾填埋气排放”的新方法（UNFCCC，2009）。基于该方法，垃圾填埋气曝气项目可能被视为清洁发展机制（CDM）项目中产生核证减排量（CER）的一种方式。本文有助于评估垃圾填埋气曝气减少甲烷排放的潜力。
