基于城市污水AB法处理的碳减排量测算分析  

Research on carbon reduction in wastewater treatment plants based on AB method under the background of carbon neutrality

作　　者：师旭军 马小蕾 李建 王海梅 雷克刚 SHI Xujun;MA Xiaolei;LI Jian;WANG Haimei;LEI Kegang(Cscec aecom consultants Co.,Ltd.,Lanzhou 730070,Gansu,China)

机构地区：[1]中国市政工程西北设计研究院有限公司,甘肃兰州730030

出　　处：《工程建设》2025年第4期74-80,共7页Engineering Construction

基　　金：甘肃省企业技术创新资助项目(GXHRC20240328-3);甘肃省科技计划资助项目(22CX8JA093);中国市政工程西北设计研究院有限公司科研课题(XBSZKY2204)。

摘　　要：在“双碳”战略背景下,污水处理厂的资源高效利用与碳减排以已成为亟待解决的关键问题。文章基于AB法工艺,采用污泥厌氧消化与热电联产相结合的方法,以西北地区规模为20×10^(4)m^(3)/d的污水处理厂为研究对象,以《农田灌溉水质标准》为出水再生利用标准,详细测算其碳排放量和碳减排量。研究表明:通过污水资源化利用,可有效减少约3.5×10^(4)kgCO_(2)-eq/d的碳排放,结合污泥沼气发电、锅炉供热和土地利用,该厂的碳减排率可达到42.28%,此外,通过热电联产将沼气用于发电和供暖,可将污水处理厂的能源中和率提升至37.72%,最后通过核算结果分析,提出了污水处理厂碳减排的关键措施。Under the background of the“dual-carbon”strategy,the efficient resource utilization and carbon emission reduction in wastewater treatment plants have become crucial issues that need to be addressed urgently.This study is based on the AB process,adopting a method that combines sludge anaerobic digestion with combined heat and power generation.Taking a wastewater treatment plant with a scale of 20×10^(4)m^(3)/d in the northwest region of China as the research object,and using the quality standard for farmland irrigation water as the standard for reclaimed water utilization,the carbon emissions and carbon emission reduction of the plant are calculated in detail.The research shows that through the utilization of wastewater resources,carbon emissions can be effectively reduced by approximately 3.5×10^(4)kgCO-eq/d.Combining sludge biogas power generation,boiler heating,and land use,the carbon emission reduction rate of this plant can reach 42.28%.In addition,by using biogas for power generation and heating through combined heat and power generation,the energy neutralization rate of the wastewater treatment plant can be increased to 37.72%.Finally,based on the analysis of the accounting results,key measures for carbon emission reduction in wastewater treatment plants were proposed.

关 键 词：碳减排 吸附-生物降解 污水资源化 热电联产 能源中和 

分 类 号：X703[环境科学与工程—环境工程]