控制径流污染雨水调蓄池优化设计研究

Research on optimal design of rainwater storage tank for runoff pollution control

研究雨水调蓄池位置、容积及数量对面源污染控制系统造价的影响,为控制径流污染的雨水调蓄池规划设计提供依据。以控制径流污染的雨水调蓄池造价最小为目标,以面源污染削减率为约束条件,建立控制径流污染的雨水调蓄池优化设计模型。以合肥市某雨水排水系统为实例进行计算分析,结果表明,不同面源污染削减率对调蓄池设置方式及其规模的影响不同,面源污染削减率小于60%时宜采用集中式雨水调蓄池,面源污染削减率大于等于60%时宜采用分散式雨水调蓄池。研究表明,雨水调蓄池优化设计可以合理确定控制径流污染的雨水调蓄池设置方案、有效降低系统造价。

The impact of location,volume and number of rainwater storage tanks on cost of non-point source pollution control system were studied,which provided the basis for the planning and design of rainwater storage tank used for runoff pollution control.On the purpose of minimizing the cost of the said kind of rainwater storage tanks,with non-point source pollution reduction rate as the constraint condition,the optimization design models for controlling runoff pollution rainwater storage tank was established.Taking a rainwater drainage system in Hefei city as an example,the results of calculation and analysis showed that,different non-point source pollution reduction rate have different effects on the setting mode and scale of the rainwater storage tank.When the non-point source pollution reduction rate is less than 60%,centralized rainwater storage tank should be adopted,when the said rate is greater than or equal to 60%,decentralized rainwater storage tank should be adopted.The research showed that,the optimal design of rainwater storage tank could determine the settting scheme of rainwater storage tank for runoff pollution control reasonably and reduce the cost of the system effectively.