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Simulation and Evaluation of Rainwater Runoff Control, Collection, and Utilization for Sponge City Reconstruction in an Urban Residential Community

Author

Listed:
  • Wentao Li

    (Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China
    Guangzhou Municipal Engineering Design & Research Institute Co., Ltd., Guangzhou 510095, China)

  • Hao Wang

    (Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China)

  • Jinjun Zhou

    (Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China)

  • Lin Yan

    (Guangdong AIKE Environmental Science and Technology Co., Ltd., Zhongshan 528400, China)

  • Zilong Liu

    (Beijing Municipal Institute of City Planning and Design, Beijing 100045, China)

  • Yali Pang

    (Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China)

  • Haijia Zhang

    (Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China)

  • Tianyi Huang

    (Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China)

Abstract

Residential areas are important for the underlying surface of a city, and the sponge construction of a residential area is a key topic in sponge city construction. Taking the Zi-Jing community as the research case, the SWMM model was established for simulation, and the rainwater runoff control, collection, and utilization were compared and analyzed before and after the implementation of sponge transformation for the designed rainfall conditions of once in 3, 5, 10, 20, and 50 years. The results showed that the water depth of the four outlet pipes was not a full tube at the first peak time. The full duration time was reduced to 1–5 h at the second peak, and the flow reduction rate at the pipe outlet was between 30% and 100%. The water storage of sub-catchments A1, A3, and A4 increased significantly and continued to increase after the peak rainfall occurred, while that of A2 decreased significantly after the transformation after the transformation. For the whole residential area, the surface runoff decreased by 37–47%, while the surface water storage and infiltration increased by 8–14% and 23–39% respectively after reconstruction. The direct storage volume of rainwater in the four sub-catchment areas was filled at least once above a once in 5 years scenario. The main conclusions were as follows: Sponge transformation in residential areas with 17.46% sunken greenbelt and 40.85% permeable pavement, and the time of the pipe outlet in full status can be shortened by 30–200 min in different rainfall return periods. With the increase in the rainfall return period, the improvement range of the infiltration increased from 23.36% to 39.54%, the improvement range of the storage capacity for rainwater decreased from 14.36% to 8.06%, and the reduction degree of surface runoff increased from 37.73% to 47.43%. The water consumption for flushing is about 30 m 3 per day for 1000 people, and the rainwater storage volume of 765 m 3 in this study can meet the flushing water demand of 5000 residents in the community for 3–5 days.

Suggested Citation

  • Wentao Li & Hao Wang & Jinjun Zhou & Lin Yan & Zilong Liu & Yali Pang & Haijia Zhang & Tianyi Huang, 2022. "Simulation and Evaluation of Rainwater Runoff Control, Collection, and Utilization for Sponge City Reconstruction in an Urban Residential Community," Sustainability, MDPI, vol. 14(19), pages 1-19, September.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:19:p:12372-:d:928392
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    References listed on IDEAS

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    1. Xiaohu Lin & Jie Ren & Jingcheng Xu & Tao Zheng & Wei Cheng & Junlian Qiao & Juwen Huang & Guangming Li, 2018. "Prediction of Life Cycle Carbon Emissions of Sponge City Projects: A Case Study in Shanghai, China," Sustainability, MDPI, vol. 10(11), pages 1-16, October.
    2. Yuanying Chi & Guoqing Bai & Hua Dong, 2021. "A New Multicriteria Decision-Making Method for the Selection of Sponge City Schemes with Shapley–Choquet Aggregation Operators," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-16, January.
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    Cited by:

    1. Yuanyuan Yang & Wenhui Zhang & Zhe Liu & Dengfeng Liu & Qiang Huang & Jun Xia, 2023. "Coupling a Distributed Time Variant Gain Model into a Storm Water Management Model to Simulate Runoffs in a Sponge City," Sustainability, MDPI, vol. 15(4), pages 1-13, February.

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