提质增效行动下某设区市污水处理减碳强度分析

Analysis of Carbon Emission Reduction Intensity of Sewage Treatment System in a Districted City under the Action of Improving Quality and Efficiency

从城乡污水处理系统碳排放角度出发,以处于城乡污水处理典型阶段的苏中某设区市为研究对象,结合定量方法及国内研究成果的类比分析,测算在污水处理系统提质增效行动前后重要时间节点的碳排放强度,验证城市污水处理系统碳减排的目标可达性。测算结果显示,2019年、2025年、2030年该设区市污水处理系统的碳排放总量分别为42894.1、55051.0、63553.9 t,去除单位BOD的碳排放强度分别为2.62、1.47、0.55 kgCO_(2)/kgBOD,表明“十四五”末期碳排放强度下降18%的目标可达。校验城市污水处理行业的碳达峰时间节点,发现2030年—2033年该设区市的碳排放总量逐年下降,与上一年相比,2031年—2033年分别下降0.72%、3.75%、13.01%,表明2030年该市污水处理行业碳达峰目标可达,减碳效益可观。

From the perspective of carbon emission of urban and rural sewage treatment systems,this paper calculates the carbon emission intensity of typical urban and rural sewage treatment systems in a districted city in Central Jiangsu at important points before and after the action of improving quality and efficiency,and verifies the accessibility of carbon emission reduction target of urban sewage treatment system by combining with quantitative analysis and analog analysis of domestic research results.In 2019,2025 and 2030,the total carbon emissions of the sewage treatment system are 42894.1 t,55051.0 t and 63553.9 t,respectively,and the carbon emission intensities of removing unit BOD are 2.62 kgCO_(2)/kgBOD,1.47 kgCO_(2)/kgBOD and 0.55 kgCO_(2)/kgBOD,respectively,indicating that the target of reducing carbon intensity by 18%by the end of the 14th Five-Year Plan are achievable.After checking the carbon peak time of the urban sewage treatment industry,it is found that the total carbon emissions of the districted city will decrease year by year from 2030 to 2033,and will decrease by 0.72%,3.75%and 13.01%respectively from 2031 to 2033 compared with the previous year.The results indicate that the carbon peak target of urban sewage treatment industry can be reached in 2030,and the carbon reduction benefits are considerable.