隐形的地下碳源:城市排水管道CH4排放  

Potential carbon emission source underground: Fugitive methane emission in the urban sewers

作　　者：苑心 李轩 胡言午 孙益权 张现国 左剑恶 YUAN Xin;LI Xuan;HU Yanwu;SUN Yiquan;ZHANG Xianguo;ZUO Jian'e(State Key Joint Laboratory of Environment Sim ulation and Pollution Control,School of Environment,Tsinghua University,Beijing 100084.China;Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518005 China;Capial Eco Pro Group,Beijing 10044.China)

机构地区：[1]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084 [2]清华大学深圳国际研究生院,深圳518005 [3]北京首创生态环保集团股份有限公司,北京100044

出　　处：《给水排水》2022年第9期139-146,共8页Water & Wastewater Engineering

基　　金：深圳市科技创新委员会深圳市高等院校稳定支持计划(WDZC20200819163549002);深圳市科创委可持续发展科技专项(KCXFZ202002011008448)。

摘　　要：城市排水管道内存在复杂的微生物活动和物理、化学反应,产生了不容忽视的CH无组织排放。综述了城市排水管道系统不同部位的CH排放研究现状,估算了2016年我国城市排水管网CH排放量为6.32 MteCO,为城市“隐形”CH排放的重要来源;总结了管道内CH排放的主要驱动因素是污水管道内的水力条件和污水特性;比较了已有排水管道CH排放计量模型;综述了排水管网CH排放控制策略,并对未来排水管道无组织CH排放的研究和减排措施进行了展望。Urban sewers produce significant amount of fugitive methane emissions due to the complex microbial activities, physical and chemical reactions in it. This paper summaries different parts of the sewers networks. It is estimated that in 2016, the CHemission of the urban sewer networks was 6.32 MteCOin China, which has become an important and imperceptible source of urban CHemission. Meanwhile, the key factors of sewers methane emissions are analyzed including hydraulic conditions and sewage compositions, and the existing models and control measures for methane emissions are reviewed. Finally, future research of fugitive methane emission from sewers are suggested to benefit the reduction of greenhouse gas emissions from urban water systems.

关 键 词：温室气体 甲烷 排水管道 碳排放 

分 类 号：TU992[建筑科学—市政工程]