Assessing the effectiveness of a residential-scale detention tank operated in a multi-objective approach using SWMM.

IF 2.5 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Water Science and Technology Pub Date : 2024-01-01 DOI:10.2166/wst.2023.422
Shiping Wang, Jianlong Wang, Chonghua Xue, Rongting Qiu, Shi Sun, Zitong Yang, Yuanhui Qiao
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Abstract

The volume capture ratio of annual rainfall (VCRAR) of low-impact development measures is significantly influenced by its operating characteristics, particularly for residential stormwater detention tanks (SWDTs). The multi-objective operation strategy of SWDTs, encompassing toilet flushing (TF), green space irrigation (GSI), combined TF and GSI (TF-GSI), and peak flow reduction (PFR) rate, were compared using a case study in Beijing based on the stormwater management model. The findings indicate that the VCRAR for TF, GSI, and TF-GSI rainwater harvesting targets was 89.05, 77.16, and 91.21%, respectively. The operating scheme and return periods have a significant impact on the PFR rate's effectiveness. When the return period was lower than 10 years, the SWDT does not reach its maximum storage capacity, and the PFR rate was increased with increasing the return period: the PFR rate was 71.47% when the design return period was 10 years. It will also produce the phenomena of water inrush, and the overflow volume will grow rapidly when the SWDT reaches its maximum storage capacity. Hence, the operation of SWDTs may be integrated with real-time control to optimize the VCRAR for rainwater reuse and flood migration, thereby enhancing the volume utilization efficiency of SWDTs.

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使用 SWMM 多目标方法评估住宅规模滞留池的有效性。
低影响开发措施的年降雨量捕集比(VCRAR)受其运行特性的影响很大,尤其是住宅雨水滞留池(SWDTs)。基于雨水管理模型,以北京的一个案例研究为基础,比较了住宅雨水滞留池的多目标运行策略,包括冲厕(TF)、绿地灌溉(GSI)、TF 和 GSI 组合(TF-GSI)以及峰值流量削减率(PFR)。结果表明,TF、GSI 和 TF-GSI 雨水收集目标的 VCRAR 分别为 89.05%、77.16% 和 91.21%。运行方案和回归期对 PFR 率的有效性有显著影响。当回归期小于 10 年时,SWDT 无法达到最大储存能力,而随着回归期的增加,PFR 率也随之增加:当设计回归期为 10 年时,PFR 率为 71.47%。在设计重现期为 10 年时,PFR 率为 71.47%。因此,可结合实时控制来优化雨水回用和洪水迁移的 VCRAR,从而提高 SWDT 的容积利用效率。
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来源期刊
Water Science and Technology
Water Science and Technology 环境科学-工程:环境
CiteScore
4.90
自引率
3.70%
发文量
366
审稿时长
4.4 months
期刊介绍: Water Science and Technology publishes peer-reviewed papers on all aspects of the science and technology of water and wastewater. Papers are selected by a rigorous peer review procedure with the aim of rapid and wide dissemination of research results, development and application of new techniques, and related managerial and policy issues. Scientists, engineers, consultants, managers and policy-makers will find this journal essential as a permanent record of progress of research activities and their practical applications.
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