WANGYong,ZHAOPing,XIEYa-wei,et al.Parameters of Runoff Pollution Control Models of Sponge City[J].China Water & Wastewater,2022,38(23):129-133.
海绵城市径流污染控制模型参数研究
- Title:
- Parameters of Runoff Pollution Control Models of Sponge City
- Keywords:
- sponge city; runoff pollution control; model; residential area; Hangzhou
- 摘要:
- 海绵城市通过低影响开发模式解决径流污染问题，但对污染削减的量化要进行全面监测较为困难，通常借助模型模拟来完成，因此模型参数的设置至关重要；并且，对SS指标的研究较为透彻，而对其他指标如COD、氨氮、TP等的研究较少。为此，分析了SS指标从去除率到削减率的发展历程，通过归纳杭州市的既有研究成果，对径流污染物COD、氨氮、TP的累积和冲刷模型参数取值给出了建议，并结合不同地形对降解系数K也给出了取值建议；同时，根据杭州市上城区不同居住小区在不同类型降雨条件下的径流水质离线监测数据，按照总体误差控制的原则，对杭州市径流污染控制模型的累积、冲刷、降解参数进行率定，为模型参数的应用提供了实践支撑。
- Abstract:
- Sponge city reduces runoff pollution through low impact development modes. However, it is difficult to comprehensively monitor the quantification of pollution reduction, and the work is usually accomplished with the help of model simulation. Therefore, it is crucial to set model parameters. In addition, research on SS index is more thorough, while the research on other indexes such as COD, ammonia nitrogen and TP is less. This paper analyzed the development process of SS index from removal rate to reduction rate, suggested the parameters of accumulation and wash-off models of COD, ammonia nitrogen and TP by summarizing the existing research results in Hangzhou, and proposed the value of degradation parameter K in combination with different terrains. According to the principle of overall error control, the accumulation, wash-off and degradation parameters of Hangzhou runoff pollution control model were calibrated based on the off-line monitoring data of runoff quality in different residential areas in Shangcheng District, Hangzhou under different types of rainfall scenarios, which provided practical support for the application of model parameters.
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