Zhang Ting-Xue, Gao Shu-Dan, Teng Xiao, Jiang Xu-Tong, Chen Ji-Hong, Gao Chen-Qi, Bian Rong-Xing, Sun Ying-Jie, Li Wei-Hua, Wang Ya-Nan, Wang Hua-Wei
College of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, China.
Huan Jing Ke Xue. 2023 Nov 8;44(11):5946-5953. doi: 10.13227/j.hjkx.202211184.
The waste sector is a significant source of greenhouse gas(GHG) emissions and clarifying its emission trends and characteristics is the premise for formulating GHG emission reduction strategies. Using the IPCC inventory model, the GHG emissions from the municipal solid waste(MSW) sector in China during 2010 to 2020 were estimated. The results showed that GHG emissions increased from 42.5 Mt in 2010 to 75.3 Mt in 2019, then decreased to 72.1 Mt in 2020. MSW landfills were the main source of GHG emissions. Further, with the increase in the proportion of waste incineration, the proportion of GHG incineration increased rapidly from 16.5% in 2010 to 60.1% in 2020. In terms of regional distribution, East and South China were the regions with the highest emissions, and Guangdong, Shandong, Jiangsu, and Zhejiang were the provinces with the largest GHG emissions. Implementing MSW classification, changing the MSW disposal modes from landfilling to incineration, improving the LFG collection efficiency of landfills, and using biological functional materials as the cover soil to strengthen the methane oxidation efficiency are the main measures to achieve GHG emission reduction in waste sectors.
垃圾处理行业是温室气体排放的重要来源，厘清其排放趋势和特征是制定温室气体减排策略的前提。利用政府间气候变化专门委员会（IPCC）清单模型，估算了2010年至2020年中国城市固体废弃物（MSW）部门的温室气体排放量。结果表明，温室气体排放量从2010年的4250万吨增加到2019年的7530万吨，随后在2020年降至7210万吨。城市固体废弃物填埋场是温室气体排放的主要来源。此外，随着垃圾焚烧比例的增加，温室气体焚烧比例从2010年的16.5%迅速增至2020年的60.1%。在区域分布方面，华东和华南地区是排放量最高的地区，广东、山东、江苏和浙江是温室气体排放量最大的省份。实施城市固体废弃物分类、将城市固体废弃物处理方式从填埋改为焚烧、提高填埋场填埋气收集效率以及使用生物功能材料作为覆盖土以增强甲烷氧化效率，是实现垃圾处理行业温室气体减排的主要措施。
