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对美国垃圾填埋场温室气体报告计划甲排放模型的调查

Benjamin M Stark¹, Kuo Tian¹, Max J Krause²

¹George Mason University, 4400 University Drive, Fairfax, VA 22030, USA.

Waste management (New York, N.Y.)

|June 12, 2024

概括

美国城市固体废物 (MSW) 垃圾填埋场的甲排放量大幅下降,但这是由于运营商倾向于低估甲生成的计算方法. 使用第一级衰变 (FOD) 模型将揭示更高的排放量.

科学领域:

环境科学环境科学
气候变化研究气候变化研究
废物管理废物管理

背景情况:

根据联合国气候变化框架公约,美国报告了城市固体废物 (MSW) 垃圾填埋场的年度甲排放.
尽管废物处理量增加,但报告的MSW垃圾填埋场甲排放量自2010年以来下降了20%.

研究的目的:

调查美国MSW垃圾填埋场甲排放量报告下降的原因.
分析垃圾填埋场运营商使用的不同甲排放计算方法之间的差异.

主要方法:

对具有气体收集和控制系统 (GCCS) 的垃圾填埋场运营商提交的数据进行分析.
两种排放计算方法的比较:第一级衰变 (FOD) 和收集效率假设 (CEA).
从2010年到2022年对甲产生,收集和氧化数据的评估.

主要成果:

据FOD模型显示,2010-2022年间产生的甲总量增加了19%,与CEA方法计算的8.9%的下降形成鲜明对比.
在同一时期,测量的甲收集量增加了7.5%.
运营商对CEA方法的偏好有助于降低国家排放估计,潜在地低估了实际排放的1.3-1.7倍.

结论:

建模方法 (FOD与CEA) 的差异,收集效率和甲氧化导致国家甲排放估计的差异很大.
目前的报告实践,特别是CEA方法的频繁使用,可能导致美国MSW垃圾填埋场甲排放量被低估.
排放计算模型的准确评估受到固有的不确定性和缺乏对点源和分散排放的连续测量方法的阻碍.

关键词:

排放量排放量排放量排放量温室气体的温室气体是什么库存库存库存库存垃圾填埋场是一个垃圾填埋场.甲甲是一种城市固体废物城市固体废物

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