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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Effectiveness Analysis of Systematic Combined Sewer Overflow Control Schemes in the Sponge City Pilot Area of Beijing
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Effectiveness Analysis of Systematic Combined Sewer Overflow Control Schemes in the Sponge City Pilot Area of Beijing

机译：北京市海绵城市试验区系统化联合下水道溢流控制方案的有效性分析

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Combined sewer overflow (CSO) pollution poses a serious threat to the urban water environment and is more severe in old urban areas. This research uses the old urban area in the sponge city pilot area in Tongzhou District, Beijing, as the study area. The United States Environmental Protection Agency (USEPA) storm water management model (SWMM) was used to establish the hydrologic and hydraulic model of this area. The model parameters were calibrated and validated based on the measured rainfall and runoff data. The results show that the Nash-Sutcliffe efficiency coefficient for calibration and validation is more than 0.74. Thirty-two sets of systematic CSO control schemes are formulated, which include the "gray (includes the pipes, pumps, ditches, and detention ponds engineered by people to manage stormwater) strategy" and "gray-green strategies", and the regularity of CSO control for "low impact development (LID) facilities at the source", "intercepting sewer pipes at the midway", and "storage tank at the end", are quantitatively analyzed. The results show that the LID facility has an average annual reduction rate of 22% for the CSO frequency and 35% to 49% for the CSO volume. The retrofitting of intercepting sewer pipes has an average annual reduction rate of 11% for the CSO frequency and 4% to 15% for the CSO volume, and the storage tank has an average annual reduction rate from 3% to 36% for the CSO volume; furthermore, the reduction rate decreases with the increase in the CSO volume reduction rate by LID facilities. When the CSO control target is stricter, the control effect of the "end" segment is more obvious, but the control efficiency is lower. By studying the variability of the storage tank volume under different control targets, it can be concluded that it is reasonable to set the CSO control target because the number of overflow events does not exceed four times per year for the study area.
机译：下水道溢流（CSO）综合污染对城市水环境构成严重威胁，在老城区更严重。本研究以北京市通州区海绵城市试点地区的老城区为研究区域。美国环境保护局（USEPA）雨水管理模型（SWMM）用于建立该地区的水文和水力模型。根据测得的降雨和径流数据对模型参数进行校准和验证。结果表明，用于校准和验证的Nash-Sutcliffe效率系数大于0.74。制定了32套系统的CSO控制方案，包括“灰色（包括由人设计的用于管理雨水的管道，泵，沟渠和滞留池）策略”和“灰色绿色策略”，以及定量分析了“源头的低影响开发（LID）设施”，“中途截留下水道”和“末端的储罐”的CSO控制。结果表明，LID设施的CSO频率年均减少率为22％，CSO量的年均减少率为35％至49％。翻修下水道的管道，CSO频率的年平均减少率为11％，CSO体积的年平均减少率为4％至15％，储罐的CSO体积的年平均减少率为3％至36％ ;此外，随着LID设施的CSO体积减少率的增加，减少率也会降低。当CSO的控制目标更加严格时，“端”段的控制效果会更加明显，但控制效率会降低。通过研究不同控制目标下储罐容积的变化，可以得出结论，设定CSO控制目标是合理的，因为研究区域每年的溢流事件次数不超过四次。

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