Characteristics of Greenhouse Gas Emissions from MSWM in Chongqing,China during 2003-2020

摘要

Researches put forward that municipal solid waste management(MSWM) emitted greenhouse gases(GHGs) and contributed to global warming potential(GWP). In 2020, Chongqing, the largest municipality in China, generated 6 285 Gg of municipal solid waste(MSW), and 5 806 Gg of MSW was safely disposed either by incineration or landfill. Hence, the amount of GHG emissions generated from MSWM in Chongqing is essential for providing basic data, improving and optimizing MSWM scenario and avoiding unnecessary emissions. This present work aims at estimating characteristics of GHG emissions generated from MSWM in Chongqing. In this paper, according to the Guidelines for National Greenhouse Gas Inventories of IPCC in 2006, life cycle assessment(LCA) was used to quantitatively analyze and evaluate the GHGs characteristics of MSW in Chongqing from 2003 to 2020. The results show that the total GHGs increased from 41.43 Gg of CO_(2)-eq in 2003 to 4 779.6 Gg of CO_(2)-eq in 2020. The emission coefficient of greenhouse gases per ton is 0.56 for incineration and 0.06-1.36 for sanitary landfill respectively.