一个新型的半经验模型,用于多场景估计城市固体废物填埋场的氧化排放量
Rong Ye1,2, Ke Yin3, Ziyi Yang1,2
1Nanjing Institute of Environment Sciences, Ministry of Ecology & Environment, Nanjing 210042, China.
Environmental science & technology
|December 18, 2025
概括
垃圾填埋场的二氧化 (N2O) 排放量是使用物流原理建模的. 垃圾分类显著减少了90%的N2O,提供了一个可持续的垃圾填埋管理策略.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 大气化学 大气化学
背景情况:
- 垃圾填埋场是氧化 (N2O) 的重要来源,这是一个强大的温室气体.
- 排放主要集中在垃圾填埋场的工作面上.
研究的目的:
- 开发和验证一个半经验模型来模拟垃圾填埋场N2O排放的时间动态.
- 为不同的垃圾填埋场场景估计N2O排放因子,并评估缓解策略.
主要方法:
- 一个基于后勤原则的半经验模型被开发来模拟N2O排放.
- 模型参数使用现场和实验室数据进行校准,与废物组成,操作实践和温度相关联.
- 该模型用于估计历史排放量,并评估废物分类 (WS),通常业务 (BAU) 和增强排放 (EE) 等场景.
主要成果:
- 该模型成功捕获了S形N2O排放模式 (R2 = 0.54).
- 关键参数与废物,操作和温度相关联. 关键参数与废物,操作和温度相关联.
- 代表性的排放因子是0.51 (WS),5.20 (BAU) 和10.97 (EE) 毫克N·kg-1的废物.
- 中国垃圾填埋场 (BAU) 估计的历史N2O排放总量为12.25 Gg N.
- 与BAU相比,废物分类减少了90%的N2O排放.
结论:
- 半经验模型提供了对现场和国家规模的垃圾填埋场N2O排放的可靠估计.
- 垃圾分类是减轻垃圾填埋场N2O排放的有效策略.
- 该模型可以补充目前的温室气体清单指南 (例如,IPCC).
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