雨污合流制地区溢流污染影响因素及管控建议  

Influencing factors and control suggestions for overflow pollution in areas with combined sewer system

作　　者：安子倩 乔肖翠 刘琰[1] 卢延娜[1] 李雪 王海燕[1] AN Ziqian;QIAO Xiaocui;LIU Yan;LU Yanna;LI Xue;WANG Haiyan(Chinese Research Academy of Environmental Sciences;College of Environmental Science and Engineering,Beijing Forestry University)

机构地区：[1]中国环境科学研究院 [2]北京林业大学环境科学与工程学院

出　　处：《环境工程技术学报》2024年第3期986-994,共9页Journal of Environmental Engineering Technology

基　　金：国家重点研发计划项目(2020YFC1806301)。

摘　　要：雨污合流制地区汛期溢流成为城市河流返黑返臭的重要原因,溢流污染的有效控制,对改善水环境,提升人民幸福感、获得感与安全感有着重要作用。针对雨污合流制地区汛期溢流污染防控,总结了合流制溢流污染的特点、对水环境质量的影响以及合流制溢流污染的影响因素等内容,分析了我国溢流污染严重区域的分布特征并提出管控建议。研究发现,我国合流制溢流污水呈现出成分复杂、水量水质变化大、初期雨水水质差等特点,且合流制溢流污染会导致城市面源污染,加重地表水质恶化程度。通过分析合流制溢流污染的2个主要影响因素(降水量和管网条件),初步识别出我国溢流污染严重区域主要集中在东部、南部地区,且相关性分析结果表明汛期降水量及管网密度与区域水质存在中等相关关系。为加强合流制地区溢流污染防控,提出要因地制宜制订汛期雨污溢流污染排放管控标准、开展溢流污染控制技术更新行动、加强汛期雨污溢流污染的全过程管理、加强汛期雨污溢流污染治理成效考核等具体建议,以期为有效控制合流制溢流污染,推动水环境质量持续改善提供参考。Overflow pollution during flood season in areas with combined sewer system has become an important reason for the return of urban rivers to blackness and odor,and the effective control of overflow pollution plays an important role in improving the water environment quality and enhancing people's sense of well-being,accessibility and security.In view of the prevention and control of overflow pollution in flood season in areas with combined sewer system,the characteristics of overflow wastewater,the influence on water environment quality,and the influencing factors of overflow pollution were summarized.The distribution characteristics of areas with severe overflow pollution were analyzed and the control suggestions were put forward.The study found that the overflow wastewater from combined sewer systems in China had the characteristics of complex composition,large changes in water quantity and quality,and poor quality of initial rainwater,which caused urban non-point source pollution and led to the deterioration of surface water.By analyzing the countrywide distribution of two main influencing factors of overflow pollution,i.e.precipitation and pipe network conditions,it was preliminarily identified that the areas with serious overflow pollution were mainly distributed in the south and east of China.The correlation analysis showed that there was a moderate correlation between precipitation in flood season,pipe network density and regional water quality.In order to strengthen the prevention and control of overflow pollution in areas with combined sewer system,some specific suggestions were proposed,including developing discharge control standards for overflow pollution according to local conditions,updating technologies for controlling and treating overflow wastewater,enhancing the whole process management of overflow pollution in flood seasons,and strengthening effectiveness assessment of overflow pollution control and treatment,and so on,which hopefully could provide support for effective control of overflow pollu

关 键 词：雨污合流 溢流污染 汛期污染强度 源头治理 污水处理厂 

分 类 号：X52[环境科学与工程—环境工程]