净水技术2025，Vol.44Issue(7)：139-146,191,9.DOI:10.15890/j.cnki.jsjs.2025.07.017
基于SWMM模型的合流制溢流污染控制调蓄池容积设计
Volume Design of Storage Tank for Combined Overflow Pollution Control Based on SWMM Model
摘要
Abstract
[Objective]To control combined sewer overflow(CSO)pollution,this study explores a design method for storage tank volume in CSO pollution control.[Methods]Taking the ecological park area of Dongguan City as the research object,based on the storm water management model(SWMM),the drainage channels and related catching-up zones were generalized to construct the regional CSO hydraulic model,and the influence of the designed volume of the storage tank on the pollution control effect of the CSO under typical hydrological year conditions,annual total overflow volume,annual total overflow frequency and the annual total overflow COD load as the indices to evaluate the pollution characteristics of the CSO.[Results]Increasing the volume of the storage tank could enhance the control rate of overflow water volume.However,due to the diminishing marginal benefit,there exised an optimal point.Before this point,increasing the volume of the storage tank could significantly improve the control effect of overflow pollution.After the optimal point,further increasing the volume of the storage tank had limited effect on improving the control effect of overflow pollution.In this study case,the optimal volumes of the storage tanks corresponding to the four drainage channels were 8 000,10 000,15 000,and 1 000 m3,respectively.The control rates of the overflow pollutant load and overflow water volume in the corresponding study area were 62.4％and 51.8％respectively.Compared with the working condition without storage tanks,the number of overflows in the following year was reduced by 43.[Conclusion]There is an initial scouring effect in the pollution of CSO.When the volume of the storage tank is the same,the control rate of the storage tank for the pollutant load of the overflow is higher than that for the overflow water volume.Adopting the mathematical model method that can reflect the real confluence process is conducive to seeking a technical and economic balance point between the pollution control efficiency of the storage tank and the construction scale.The design method proposed in the research is a beneficial supplement to the current technical specifications' design guidelines for the volume of CSO pollution control and storage tanks.关键词
合流制溢(CSO)流污染/SWMM/调蓄池/容积设计/溢流污染物负荷/溢流水量Key words
combined sewer overflows(CSO)pollution/SWMM/storage tank/volume design/overflow pollutants load/overflow capacity分类
建筑与水利引用本文复制引用
曹喆,王成坤,王川涛,李士翔,王俊佳,刘悦忆..基于SWMM模型的合流制溢流污染控制调蓄池容积设计[J].净水技术,2025,44(7):139-146,191,9.基金项目
国家自然科学基金长江水科学研究联合基金项目(U2040206) （U2040206）
国家自然科学基金面上项目(52179009) （52179009）
国家自然科学基金青年项目(51909035) （51909035）
