中国城市生活垃圾填埋CH_(4)和VOCs等气体排放特征  

Characteristics of CH_(4)and VOCs emissions from municipal solid waste landfills in China

作　　者：邓天乐 马占云[2] 刘舒乐 高庆先[2] 高文康[3] 李华圣 谢立勇[1] DENG Tian-le;MA Zhan-yun;LIU Shu-le;GAO Qing-xian;GAO Wen-kang;LI Hua-sheng;XIE Li-yong(College of Agronomy,Shenyang Agricultural University,Shenyang 110866,China;State Key Laboratory of Environmental Benchmarks and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Institute of Atmospheric Physics,Chinese Academy of Sciences,Atmospheric Sub-center of China Ecosystem Research Network,Beijing 100029,China)

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110866 [2]中国环境科学研究院,环境基准与风险评估国家重点实验室,北京100012 [3]中国科学院大气物理研究所,中国生态系统研究网络大气分中心,北京100029

出　　处：《中国环境科学》2024年第11期6007-6017,共11页China Environmental Science

基　　金：国家重点研发计划项目(2022YFE0135200);中挪关于畜禽养殖和废弃物管理领域甲烷排放的合作项目(2024-地方科研-0444)。

摘　　要：为全面评估中国城市生活垃圾填埋处理CH4和VOCs等典型大气污染物排放状况,积极推动减污降碳工作,通过统计全国695个城市的基础信息,基于排放因子法,计算了2002~2022年中国城市生活垃圾填埋处理CH_(4)和VOCs等典型大气污染物排放量,分析了排放趋势和空间特征,并提出了减排建议.结果表明:2009年以后中国城市生活垃圾填埋处理率(生活垃圾填埋处理量/无害化处理量)呈持续下降趋势,下降率最低是2011年为1.39%,最高是2020年为12.45%.2022年,中国城市生活垃圾填埋处理排放的CH_(4)、NH_(3)、VOCs、TSP、PM_(10)和PM_(2.5)总量分别为4.09×10^(6),17.04,4.75×10^(4),14.09,6.66和1.00t.空间来看,中国城市生活垃圾填埋处理CH_(4)和VOCs等典型大气污染物排放量高值区向南部变化.2018年以后,大气污染物排放量呈持续下降趋势,下降率最低是2018年为2.75%,最高是2022年为41.57%.2020年以后,CH_(4)排放量呈持续下降趋势,下降率最低是2020年为4.53%,最高是2022年为13.56%.中国城市生活垃圾填埋处理的CH_(4)和VOCs等典型大气污染物排放量在近年来呈现下降趋势,随着生活垃圾填埋量的减少,大气污染物的下降速率大于CH_(4)的下降速率.To assess the emission status of primary gas emissions such as methane(CH_(4))and VOCs from municipal solid waste(MSW)landfills in China comprehensively and promote the understandings of the reduction potential of air and greenhouse gas emissions in waste sector,this study collected the fundamental information of waste treatment in 695 cities nationwide.Based on the emission factor method,it calculated the emissions of CH_(4),VOCs,and other typical air pollutants from urban landfills in China from 2002 to 2022.The results show that the MSW disposed in landfills in China has been decreasing after 2009.The decline rate was lowest in 2021(1.39%),while highest in 2020(12.45%).In 2022,the total emissions of CH_(4),NH_(3),VOCs,TSP,PM_(10),and PM_(2.5)from urban landfills in China were 4.09×10^(6),17.04,4.75×10^(4),14.09,6.66,and 1.00 ton respectively.In terms of spatial distribution,the regions with significant emissions of CH_(4)and volatile organic compounds(VOCs)from MSW landfills in China have experienced a southward migration.Since 2018,there has been a sustained reduction in the emissions of these air pollutants,with the rate of decline ranging from a minimum of 2.75%in 2018 to a maximum of 41.57%in 2022.Post-2020,emissions of CH_(4)have followed a similar downward trajectory,with a minimum reduction of 4.53%observed in 2020 and a peak decrease of 13.56%in 2022.Over the past few years,there has been a notable decrease in the CH_(4)and VOCs emissions from landfills in China.This trend correlates with a reduction in the volume of waste being disposed in the landfills,where the rate of decline for air pollutants has exceeded that observed for CH_(4)emissions.

关 键 词：填埋处理 CH__4 VOCS 大气污染物 排放特征 

分 类 号：X511[环境科学与工程—环境工程]