净水技术2025，Vol.44Issue(4)：98-107,158,11.DOI:10.15890/j.cnki.jsjs.2025.04.012
污水厂碳排放影响因素及碳中和潜力分析
Analysis on Influencing Factors of Carbon Emissions and Carbon Neutrality Potential of WWTPs
摘要
Abstract
[Objective]The proposal of the"3060"carbon target has encouraged various industries to focus on the"double carbon"issue.It is necessary to calculate the carbon sources and carbon sinks in the process of wastewater treatment.[Methods]The paper studied the factors of the carbon emissions of wastewater treatment plants(WWTPs)at the operating enterprise level,further analyzed the characteristics of carbon emissions and carbon neutrality potential,and provides basis for the low-carbon operation adjustment of WWTPs.This paper clarified the boundaries of carbon emission accounting within the management scope of the operating enterprise,selected practical and available carbon accounting method and emission factors based on the actual process operation,and conducted carbon emission accounting and analysis of the eight WWTPs managed by the operating enterprise.[Results]Research showed that the total carbon emissions of the operating company were 1.95×105 t CO2/a,and the total carbon emission intensity was 0.25 kg CO2/m3.The annual carbon emission range of the eight WWTPs was 7 365.8～53 083.1 t CO2/a,and the carbon emission intensity was 0.17～0.47 kg CO2/m3.The correlation coefficient(R2)of the carbon emission intensity and electricity consumption per ton of water was 0.94,and the R2 of the carbon emission intensity and chemical consumption per ton of water was 0.91.From the perspective of process type,the order of carbon emission intensity was manifested as oxidation ditch＜anaerobic/anoxic/oxic(AAO)＜AAO+(MBR)＜biological aerated filter(BAF),which was mainly related to the power consumption and chemical consumption of the process.The comprehensive pollutant reduction index and the reduction of oxygen-consuming pollutants adjusted based on carbon source contributions both exhibit enhanced correlation with carbon emission intensity.With using emission reduction measures such as photovoltaic power generation and recycled water reuse,the net carbon emission intensity of WWTP1 was-0.022 kg CO2/m3.[Conclusion]The WWTPs adopt different processes,resulting large differences in carbon emissions,the fundamental reason is that they are affected by the electricity consumption per ton of water and the chemical consumption per ton of water.When studying carbon emissions,the impact of carbon sources on direct carbon emissions should be considered.It is feasible for the WWTP managed by the operating enterprise to realize the goal of carbon neutrality by taking advantage of the environment and process.关键词
碳排放/碳中和/污水处理厂(WWTP)/碳源/污染物削减Key words
carbon emission/carbon neutrality/wastewater treatment plant(WWTP)/carbon sources/pollutant reduction分类
土木建筑引用本文复制引用
陈红芳,贺珊珊,马民,黄琦,万年红,刘海燕,计险,周小丹..污水厂碳排放影响因素及碳中和潜力分析[J].净水技术,2025,44(4):98-107,158,11.基金项目
武汉市城建局科技计划项目(202236) （202236）
武汉市城市排水发展有限公司科研项目(PS-ZGB-FK-2023-218) （PS-ZGB-FK-2023-218）
