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.
Initial Rainwater Discharge Pollution and Storage Strategies for Strong Drainage Systems in High-density Built?up Areas
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第12期
Page:
41-46
Column:
Date of publication:
2025-06-17
- Keywords:
- initial rainwater; strong drainage system; linear storage
- 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.
Last Update:
2025-06-17