广东省废弃物处理领域甲烷排放特征与管理现状分析

Analysis on CH_(4) emission characteristics and control policies of municipal waste disposal in Guangdong province

为系统了解广东省废弃物处理领域甲烷(CH_(4))排放特征和管理现状,对2010—2020年广东固体废弃物、废水处理的CH_(4)排放量进行核算,并基于排放结果对广东CH_(4)管理现状进行分析,结果表明:2010—2020年CH_(4)排放占广东废弃物处理温室气体排放的七成以上,主要来自固体废弃物填埋处理CH_(4)排放。废弃物处理领域CH_(4)总排放增势在“十三五”期间实现扭转,其中2020年广东固体废弃物填埋处理CH_(4)排放分别较2018和2010年减少排放约38.1万t和1.3万t,而废水处理CH_(4)排放总体仍然呈现上升趋势,广东废弃物处理甲烷排放管理工作取得了一定成效。此外,建议政府管理部门通过出台甲烷减排行动方案、完善废弃物处理甲烷减排管理机制、持续提升废弃物处理设施运营管理水平等措施,助力我国和广东在“双碳”目标下不断深化甲烷减排工作。

In order to systematically understand the characteristics and management status of methane(CH_(4))emissions in Guangdong's municipal waste disposal sector,the CH_(4) 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,CH_(4) emissions accounted for more than 70% in the field of municipal waste disposal in Guangdong,mainly from solid waste landfill disposal.Although CH_(4) emissions from wastewater treatment still showed an upward trend,the increase in CH_(4) 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 CH_(4) emissions in the field of waste treatment was reversed during the “13th Five-Year Plan” period,denoting that Guangdong's waste treatment CH_(4) emission management work has achieved certain results.In addition,in order to deepen the national and provincial CH_(4) emission reduction action under the goal of carbon peak and carbon neutrality,measures such as issuing an integrated CH_(4) emission reduction plan,refining the CH_(4) 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.