合流制溢流污染控制系统决策

Study on the systematic decision-making of combined sewer overflow pollution control

合流制溢流(CSO)污染控制以削减溢流进入受纳水体的污染物总量为目标。由于合流制排水系统的复杂性以及污染物传输、溢流过程的随机性和多变性,CSO污染控制涉及一系列错综复杂的理论与工程实际问题,因而需要进行科学的系统决策,以降低投资、提高效益。首先分析我国城市CSO污染控制存在的主要问题;再从解析合流制及其溢流污染控制系统的组成关系入手,从宏观、系统的角度分析CSO污染的产生与传输过程,构建CSO污染控制系统,并对几个主要子系统进行分析;最后提出CSO污染的系统控制原理,探讨子系统的合理衔接、匹配和控制方案的优化选择问题,为我国城市CSO污染控制提供一个清晰的思路。

The goal of combined sewer overflow （CSO） pollution control is reducing the total pollutant load which overflows into the receiving water. Because of the complexity of combined sewer system and the randomness and variability in the pollutant transmission and overflow process, it involves a series of comprehensive and complex theoretical and practical problems when developing a CSO pollution control program. Thus in order to reduce investment and improve efficiency, the decision- making should be scientific and systematic. Firstly, the main problems of urban CSO pollution control in China were analyzed in this paper. Secondly, through analyzing the C_SO pollution control system and its component relationship, the generation and transport processes of CSO pollution were studied in a macro and systematic perspective, and the CSO pollution control system was developed, several main subsystems were analyzed deeply. Lastly, the systematic control theory of CSO pollution was put forward, including the native of CSO pollution control linkage, matching relationship of the subsystems and the preferred alterprogram, to provide a clear idea for urban CSO pollution control in China.