XIXu-jun.Initial Rainwater Discharge Pollution and Storage Strategies for Strong Drainage Systems in High-density Built?up Areas[J].China Water & Wastewater,2025,41(12):41-46.
高密度建成区强排系统初雨放江污染与调蓄策略
- Title:
- Initial Rainwater Discharge Pollution and Storage Strategies for Strong Drainage Systems in High-density Built?up Areas
- Keywords:
- initial rainwater; strong drainage system; linear storage
- 摘要:
- 对初期雨水进行调蓄是当前建成区控制雨水泵站放江污染的主要方式。通过对上海浦东金桥区域多个雨水强排系统降雨量及雨水泵站放江水质的监测，综合分析了建成区分流制强排系统初期雨水污染来源及特征。针对高密度建成区特点，综合泵站分布、道路及河道布局、用地规划等因素，对比点状调蓄和线性调蓄后，采用在河道规划绿带下设置线性多系统联合调蓄管道的方案并进行效益分析。以2022年全年降雨情况进行模拟，工程建成后可实现降低泵站全年放江次数约48.62%，全年SS、COD、NH3-N及TP减排分别约33.18%、32.58%、31.77%、36.27%，具有较好的环境效益。该研究结果可为类似区域统筹控制初期雨水污染，建设集约化、更具韧性的初期雨水污染控制系统提供参考。
- Abstract:
- Regulating and storing initial rainwater has become the primary method for controlling pollution from rainwater pumping stations in the current built-up area. By monitoring rainfall across multiple rainwater drainage systems and the water quality of rainwater pumping stations in the Jinqiao area of Pudong, Shanghai, the sources and characteristics of initial rainwater pollution in the strong drainage system of the built-up area were comprehensively analyzed. Considering the characteristics of high-density built-up areas, combined with the distribution of pumping stations, road and river layout, land use planning and other factors, after comparing point shaped storage and linear storage, the scheme of setting up linear multi-system joint storage pipeline under the green belt of river planning is adopted and the benefit analysis is carried out. Based on the simulation of the annual rainfall in 2022, the project can reduce the number of discharges into the river by about 48.62%, and reduce the annual emissions of SS, COD, NH3-N, and TP by about 33.18%, 32.58%, 31.77%, and 36.27%, respectively, achieving environmental benefits. This approach provides a reference for similar areas to comprehensively control initial rainwater pollution and develop a intensive and more resilient initial rainwater pollution control system.
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