净水技术2025，Vol.44Issue(6)：116-124,9.DOI:10.15890/j.cnki.jsjs.2025.06.014
重庆某污水处理厂碳排放核算及减碳路径探究
Carbon Emission Accounting and Carbon Reduction Path Exploration of a WWTP in Chongqing
摘要
Abstract
[Objective]"Dual Carbon"strategy,promoting the upgrading and reconstruction of urban wastewater treatment plants(WWTPs)while reducing their carbon emissions is of great significance for sustainable development.By analyzing the carbon emission sources and influencing factors in the operational process of upgraded WWTPs,this study provides a basis for optimizing carbon reduction pathways.[Methods]Taking an upgraded WWTP in Chongqing as a case study,this paper estimates the operational carbon emissions using the emission factor method in accordance with relevant technical guidelines.[Results]The total annual carbon emission reached 4 264.99 t CO2 e and the carbon emission intensity was 0.584 2(kg CO2 e)/m3.Scope 1 accounted for 49.26％,of which the fossil source CO2 in scope 1 was as high as 25.16％,the fossil source CO2 emission was an important emission source that could not be ignored in the operation process of WWTPs.Scope 2 accounted for 44.15％,and scope 3 accounted for 6.59％.Based on the evaluation,adopting photovoltaic(PV)carbon replacement,intelligent aeration,precise dosing,and reclaimed water reuse could reduce annual indirect emissions by 91.33 t CO2 e,105.78 t CO2 e,and 895.32 t CO2 e,respectively.[Conclusion]The direct carbon emissions and power consumption during the operation and maintenance of the WWTP are the hot factors of carbon emissions.The utilization of electricity during the operation of this WWTP is a major contributor to carbon emissions,with energy-intensive equipment being the main source of electricity consumption.From the perspectives of carbon replacement and carbon reduction,the carbon emission reduction pathways suitable for the WWTP are proposed to replace carbon use in photovoltaic system,optimize intelligent aeration system,control precision dosing and reclaimed water utilization.The result will provide valuable reference and inspiration for the carbon reduction in other WWTPs.关键词
污水处理/碳排放/碳核算/减碳路径/节能Key words
wastewater treatment/carbon emissions/carbon accounting/carbon reduction path/energy conservation分类
建筑与水利引用本文复制引用
李书钺,邓艾欣,马念,雷锦涛,刘梦一,明仆..重庆某污水处理厂碳排放核算及减碳路径探究[J].净水技术,2025,44(6):116-124,9.基金项目
城市排水系统碳核算与减排路径技术指南(108012481001) （108012481001）
