合流制排水系统溢流污染就地调蓄处理控制技术研究

Study of on-site treatment technology for combined sewer overflows pollution

在对高效混合絮凝斜板沉淀工艺进行现场中试的基础上,将化学强化处理工艺与调蓄池相结合,针对上海市某合流制排水系统,进行调蓄/沉淀池的概念设计,提出主要设计参数,利用计算流体力学(CFD)模型对调蓄/沉淀池进行优化设计。试验和模拟结果表明,调蓄/沉淀池与单纯的调蓄池相比具有更好的溢流污染控制效果和效益/造价比。

A chemical primary enhanced process was integrated into storage tank based on a new pilot equipment with high-rate mixing/flocculation and lamella process for combined sewer overflows pollution control. A concept design for a storage/settling tank had been performed for a combined drainage system, in which some key design parameters were selected. Then clarifier prototype of optimized design was simulated by CFD based Process/Clarifier Model. The results of pilot and simulation indicated that a storage/settling tank compared with a storage tank had better effect for CSOs pollution control and lower cost performance.