Analysis on CH4 emission characteristics and control policies of municipal waste disposal in Guangdong province

doi:10.12006/j.issn.1673-1719.2023.110

Abstract

Abstract:

In order to systematically understand the characteristics and management status of methane (CH₄) emissions in Guangdong’s municipal waste disposal sector, the CH₄ emissions of solid waste landfill disposal, domestic sewage treatment and industrial wastewater treatment in 2010-2020 in Guangdong province were calculated, and the implementation of control policies in Guangdong was analyzed based on the emission results. Results indicated that from 2010 to 2020, CH₄ emissions accounted for more than 70% in the field of municipal waste disposal in Guangdong, mainly from solid waste landfill disposal. Although CH₄ emissions from wastewater treatment still showed an upward trend, the increase in CH₄ emissions from solid waste landfill treatment in Guangdong has been initially reversed, and the emissions in 2020 were reduced by about 381 and 13 kt respectively compared with 2018 and 2010. The growth trend of CH₄ emissions in the field of waste treatment was reversed during the “13th Five-Year Plan” period, denoting that Guangdong’s waste treatment CH₄emission management work has achieved certain results. In addition, in order to deepen the national and provincial CH₄ emission reduction action under the goal of carbon peak and carbon neutrality, measures such as issuing an integrated CH₄ emission reduction plan, refining the CH₄ emission reduction management mechanism of municipal waste disposal and continuously improving the operation and management level of waste treatment facilities were also strongly recommended to the governments.

Key words: Municipal waste disposal, CH₄ emissions, Emission control policy, Guangdong province

LI Yi-Xi, WANG Xiao, XU Hong-Wei, LIAO Cheng-Hao, ZHANG Yong-Bo. Analysis on CH₄ emission characteristics and control policies of municipal waste disposal in Guangdong province[J]. Climate Change Research, 2023, 19(5): 582-591.

Figures/Tables 4

Fig. 1 Proportion of municipal waste components in Guangdong province

Fig. 2 Changes of CH4 emissions in Guangdong during 2010-2020. (a) Solid waste landfill disposal, (b) domestic sewage treatment, (c) industrial wastewater treatment, and (d) municipal waste disposal sector

Fig. 3 Changes of greenhouse gas (GHG) emissions from municipal waste disposal sector in Guangdong during 2010-2020. (a) Municipal waste disposal, (b) solid waste disposal, and (c) wastewater treatment

Fig. 4 Changes in CH4 emission intensity per capita from municipal waste disposal sector in Guangdong during 2010-2020

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Analysis on CH₄ emission characteristics and control policies of municipal waste disposal in Guangdong province

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