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Modeling and Pilot-Scale Experiment of Hydrodynamic Regulation to Improve the Water Quality of a Plain Urban River Network: A Case Study of Changzhou, China

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Listed:
  • Jingtian Ma

    (Key Laboratory Taihu Basin Water Resources Management, Ministry of Water Resources, Nanjing Hydraulic Research Institute, Nanjing 210098, China)

  • Yang Liu

    (Key Laboratory Taihu Basin Water Resources Management, Ministry of Water Resources, Nanjing Hydraulic Research Institute, Nanjing 210098, China)

  • Jiaying Liu

    (Key Laboratory Taihu Basin Water Resources Management, Ministry of Water Resources, Nanjing Hydraulic Research Institute, Nanjing 210098, China)

  • Guosong Fei

    (Changzhou Hydrographic Bureau, Changzhou 213022, China)

  • Ziwu Fan

    (Key Laboratory Taihu Basin Water Resources Management, Ministry of Water Resources, Nanjing Hydraulic Research Institute, Nanjing 210098, China)

Abstract

One-dimensional modeling of the hydrodynamic river networks of plain urban rivers has been employed to optimize operating regulations in these river networks. However, pilot-scale experiments are still lacking for the validation of hydrodynamics obtained by modeling to improve water quality. In this study, a pilot-scale experiment combined with theoretical calculation was conducted to determine both the hydrodynamics and water quality in the Hutang area of Changzhou, China. The simulation results showed that using high-performance pumps on the border to drain the river beyond it could increase the frequency of water replenishment. The results of the pilot-scale experiment are consistent with the simulation. Moreover, only in condition (c) does the water of the Wuyi canal flow into the Wunan river. With the exception of turbidity, the highest number of rivers with improved water quality tables occurred in this condition. Based on the response mechanism between the flow rate and the water quality, a flow rate within the range of 0.12 m/s to 0.28 m/s can help reduce comprehensive pollution. This study successfully enhanced the hydrodynamic regulation and water quality of the rivers in the Hutang region using technologies combined with simulation and pilot-scale experiments.

Suggested Citation

  • Jingtian Ma & Yang Liu & Jiaying Liu & Guosong Fei & Ziwu Fan, 2023. "Modeling and Pilot-Scale Experiment of Hydrodynamic Regulation to Improve the Water Quality of a Plain Urban River Network: A Case Study of Changzhou, China," Sustainability, MDPI, vol. 15(7), pages 1-18, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:7:p:5700-:d:1106421
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    References listed on IDEAS

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    1. Lariyah Mohd Sidek & Aminah Shakirah Jaafar & Wan Hazdy Azad Wan Abdul Majid & Hidayah Basri & Mohammad Marufuzzaman & Muzad Mohd Fared & Wei Chek Moon, 2021. "High-Resolution Hydrological-Hydraulic Modeling of Urban Floods Using InfoWorks ICM," Sustainability, MDPI, vol. 13(18), pages 1-20, September.
    2. Bojun Liu & Jun Xia & Feilin Zhu & Jin Quan & Hao Wang, 2021. "Response of Hydrodynamics and Water-quality Conditions to Climate Change in a Shallow Lake," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 35(14), pages 4961-4976, November.
    3. Thanaporn Supriyasilp & Teerawat Suwanlertcharoen & Nudnicha Pongput & Kobkiat Pongput, 2022. "Root Zone Soil Moisture Assessment at the Farm Scale Using Remote Sensing and Water Balance Models," Sustainability, MDPI, vol. 14(3), pages 1-15, January.
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