Development and implementation of a screening method to categorise the greenhouse gas mitigation potential of 91 landfills.
Development and implementation of a screening method to categorise the greenhouse gas mitigation potential of 91 landfills.
复制标题
制定并实施筛选方法，对 91 个垃圾填埋场的温室气体减排潜力进行分类。
DOI：
10.1016/j.wasman.2018.03.005
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发表时间：
2019
期刊：
影响因子：
8.1
通讯作者：
C. Scheutz
中科院分区：
文献类型：
--
作者：
A. Fredenslund;J. Mønster;P. Kjeldsen;C. Scheutz
开发了一种评估甲烷排放的具有成本效益的筛选方法，并将91个较老的丹麦垃圾填埋场按其排放量划分为三类。总体目标是评估这些垃圾填埋场在通过建造生物覆盖物减少甲烷排放方面是否相关。该方法基于顺风向甲烷浓度测量，使用车载空腔衰减谱仪结合逆色散模型来估计整个站点的甲烷排放速率。研究发现，这种方法的准确度不如劳动密集型示踪剂气体扩散法，因此，如果需要很高的准确度，就不能推荐使用这种方法。然而，如果不那么准确的检查就足够了，那么它是有用的。灵敏度分析表明，离散模型过去对输入参数的变化高度敏感。在调查中的91个垃圾填埋场中，当甲烷排放阈值设定为2 kg CH4h−1时，发现25个与生物覆盖建筑相关。
A cost-effective screening method for assessing methane emissions was developed and employed to categorise 91 older Danish landfills into three categories defined by the magnitude of their emissions. The overall aim was to assess whether these landfills were relevant or irrelevant with respect to methane emission mitigation through the construction of biocovers. The method was based on downwind methane concentration measurements, using a van-mounted cavity ring-down spectrometer combined with inverse dispersion modelling to estimate whole-site methane emission rates. This method was found to be less accurate than the more labour-intensive tracer gas dispersion method, and therefore cannot be recommended if a high degree of accuracy is required. However, it is useful if a less accurate examination is sufficient. A sensitivity analysis showed the dispersion model used to be highly sensitive to variations in input parameters. Of the 91 landfills in the survey, 25 were found to be relevant for biocover construction when the methane emission threshold was set at 2 kg CH4h−1.