重庆某城市污水处理系统雨污分流改造效果评价  

Effect Evaluation of Reconstruction for Rainwater and Wastewater Seperated System of a Municipal Wastewater Treatment System in Chongqing

作　　者：蒲贵兵 谢天 杨梅 邵川 PU Guibing;XIE Tian;YANG Mei;SHAO Chuan(Technology Center of Housing and Urban-Rural Construction in Chongqing,Chongqing 401122,China)

机构地区：[1]重庆市住房和城乡建设技术发展中心,重庆401122

出　　处：《净水技术》2023年第2期77-84,共8页Water Purification Technology

基　　金：2022年度川渝联合实施重点研发项目:城市雨污分流关键技术研究与应用(CSTB2022TIAD-CUX0009);重庆市建设科技项目:基于“按效付费”的城市水环境综合治理绩效评价指标体系研究(城科字2021第7-12)。

摘　　要：近年来,雨污合流问题对排水系统产生了极大的负面影响。各地投入大量资金陆续打响了雨污分流攻坚战和持久战,取得了一定成效,但缺乏对分流效果的科学评价。以重庆某城市污水厂服务范围为例,选择运行成效、环境经济效益、管网系统建设、管理制度4大类11个指标进行分流效果评价。评价结果认为,该系统雨污分流效果显著。改造后,运行成效显著提高,污水集中收集率和厂前进水浓度(CODCr、BOD5)更高,主河道混有污水的排口数量明显减少;环境经济效益显著提升,城区内环境的污染物排放量大幅度减少;排水系统建设逐渐完善,管网密度和管网覆盖率进一步提高,基本达到分流制要求;管理长效机制基本形成。同时,文中总结分析了分流改造的典型经验做法及管网系统尚存的主要问题,提出了进一步提质增效的工作建议。In recent years, the confluence of rain and wastewater has had a great negative impact on the drainage system. All localities have invested a lot of money to start the tough and protracted battle of rain and wastewater diversion, and achieved some results, but there is a lack of scientific evaluation of the diversion effect. Taking the service scope of a municipal wastewater treatment plant(WWTP) in Chongqing as an example, 11 indices in four categories of operation effectiveness, environmental and economic benefits, pipe network system construction and management system were selected to evaluate the diversion effect. The evaluation results showed that the rainwater and wastewater diversion effect of this system was remarkable. After the transformation, the operation effect was significantly improved, the centralized collection rate of wastewater and influent concentration(CODCrand BOD5) were higher, and the discharge outlet of mixed wastewater in the main river was significantly reduced. The environmental and economic benefits had been significantly improved, and the emission of pollutants in the urban environment had been greatly reduced. The construction of drainage system had been gradually improved, resulting in the density and coverage of pipe network had been further improved, it showed the requirements of the diversion system had been basically met. A long-term management mechanism had been basically formed. At the same time, this paper summarized and analyzed the typical experience and practice of diversion transformation and the main problems remaining in the pipe network system, put forward suggestions for further improving quality and efficiency.

关 键 词：排水系统 雨污分流 效果评价 运行成效 进水浓度 提质增效 

分 类 号：TU992[建筑科学—市政工程]