城市排水系统提质增效关键技术研究-以马鞍山市为例  

Study on key technologies for improving quality and efficiency of urban drainage system:a case of Ma′anshan City

作　　者：徐祖信[1,2,4] 张竞艺 徐晋 王思玉 陈宗群 林夷媛 王静怡 屈扬 尹海龙 李怀正[1,3,4] 金伟 XU Zuxin;ZHANG Jingyi;XU Jin;WANG Siyu;CHEN Zongqun;LIN Yiyuan;WANG Jingyi;QU Yang;YIN Hailong;LI Huaizheng;JIN Wei(College of Environmental Science and Engineering,Tongji University;State Key Laboratory of Pollution Control and Resource Reuse;Key Laboratory of Yangtze River Water Environment,Ministry of Education;Shanghai Institute of Pollution Control and Ecological Security)

机构地区：[1]同济大学环境科学与工程学院 [2]污染控制与资源化研究国家重点实验室 [3]长江水环境教育部重点实验室 [4]上海污染控制与生态安全研究院

出　　处：《环境工程技术学报》2022年第2期348-355,共8页Journal of Environmental Engineering Technology

基　　金：长江生态环境保护修复联合研究项目(第一期)(2019-LHYJ-01-0212-14);中国长江三峡集团有限公司资助项目(202003065)。

摘　　要：长江中下游城市普遍存在排水系统提质增效问题,成为制约城市水环境长效改善的关键瓶颈。结合长江生态环境保护修复马鞍山驻点城市需求,围绕精准控源截污和雨天排放污染控制,以马鞍山市主要城市内河——慈湖河水系水质改善为案例,开展了4项关键技术研究:1)基于河流网格化水量水质监测的排污口溯源方法,结合反问题方法,确定慈湖河干流污染负荷排入的主要区域,实现简便、准确的排污口排查;2)基于水质特征因子构建蒙特卡洛-化学质量平衡模型,识别慈湖河主要排区雨水管道混接污水量和地下水入渗量,利用生物遗传算法(MGA)识别混接和破损的具体点位;3)综合考虑降雨特征、前期晴天数、管道沉积物、混接污水等多因素影响,建立排口水质和水量动态过程线,提出基于多因素影响的“浓度-体积”优化调蓄设计,大幅提高截留污染负荷;4)提出并探究基于管道絮凝的溢流污染高效控制技术的可行性。通过科技支撑和各方的努力,慈湖河水质得到稳定改善,为进一步提升长江中下游城市水环境综合治理成效提供参考和借鉴。The low quality and efficiency of drainage systems are ubiquitous in cities in the middle and lower reaches of the Yangtze River,becoming a bottleneck restricting the long-term improvement of the urban water environment.Based on the Yangtze River eco-environmental protection and restoration requirements of Ma′anshan City,four key technologies for improving the water quality of the main inland river,the Cihu River,in the aspects of accurate source control,sewage interception and pollution control on rainy days were studied.The technologies included:1)Applying the drainage outlets tracing methods based on grid water quantity and quality monitoring,and combining the inverse problem method,the main discharge areas of pollution load along the Cihu River mainstream were determined,thus fulfilling the simple and accurate sewage outlet investigation.2)A Monte Carlo chemical mass balance model was developed based on the water quality characteristic factors to identify the mixed sewage volume and groundwater infiltration volume of rainwater pipeline in primary drainage areas of Cihu River,and the microbial genetic algorithm(MGA)was further applied to locate mixed connection and damage points.3)Comprehensively considering the influence of multiple factors such as rainfall characteristics,sunny days in the early stage,pipeline sediments and mixed sewage,the dynamic process lines of water quality and quantity at discharge outlets were established,and the"concentration-volume"optimizing regulation and storage design based on multiple influencing factors was proposed to greatly improve the interception loads.4)The feasibility of efficient overflow pollution control techniques based on in-situ coagulation-flocculation in the pipeline was proposed and explored.Through the scientific and technological support and the efforts of all parties,the water quality in the Cihu River,Ma′anshan City,had been steadily improved,which provided a reference for further improving the effectiveness of urban water environment comprehensive trea

关 键 词：长江大保护 城市水环境 排水系统 提质增效 控源截污 雨天污染控制 

分 类 号：X52[环境科学与工程—环境工程]