IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i13p10313-d1183055.html
   My bibliography  Save this article

Simulation Study on the Impact of Water Flow Regulation Based on the MIKE 21 Model in a River Water Environment

Author

Listed:
  • Cundong Xu

    (Institute of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
    Key Laboratory for Technology in Rural Water Management of Zhejiang Province, Hangzhou 310018, China
    Henan Provincial Hydraulic Structure Safety Engineering Research Center, Zhengzhou 450046, China)

  • Zihao Ren

    (Institute of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Song Huang

    (Institute of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Jiaming Li

    (Institute of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Yahui Zi

    (Institute of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

  • Xiaomeng Hu

    (Institute of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou 450046, China)

Abstract

Inadequate hydrodynamics can cause deterioration of the water environment within rivers. Regulating water conservancy projects can effectively improve the state of the water environment of rivers and promote sustainable regional development. The river plain in Zhejiang Province, China, suffers from severe hydrodynamic deficiencies, which have a significant impact on the state of the regional water environment. To investigate the changing state of the water environment of the river plain under water conservancy project control, in this study we constructed a two-dimensional hydrodynamic–water quality model based on the AD and ECOLAB modules in MIKE 21 software 2014 Edition. Combined with conservative tracers, the changes in the water displacement rate, flow rate, and water environment quality of the river plain were simulated under different regulation schemes over 7 days. A quantitative analysis of the effects of improving the state of the water environment in the river plain was carried out using a cluster analysis and a cloud model. (1) The water replacement rate of the outer river reached 90% after 3 days and approached 100% after 7 days. The water replacement rates of the inner pond were 51.2, 49.6, and 55.8%. This indicated that the engineering control measures effectively improved the replacement capacity of the river. (2) The contents of DO and BOD 5 in the river have increased from class V to above class 3. The overall water quality is in the range of classes 2 to 3, and in some parts it can reach class 1. This indicates that the regulatory plan played a certain role in improving the river water environment. (3) The water pollution in the study area showed a fluctuating and decreasing trend over 7 days. There was a positive correlation between the flow velocity, water replacement rate, DO, and BOD 5 .

Suggested Citation

  • Cundong Xu & Zihao Ren & Song Huang & Jiaming Li & Yahui Zi & Xiaomeng Hu, 2023. "Simulation Study on the Impact of Water Flow Regulation Based on the MIKE 21 Model in a River Water Environment," Sustainability, MDPI, vol. 15(13), pages 1-20, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:13:p:10313-:d:1183055
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/13/10313/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/13/10313/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Zikun Xing & Lloyd H. C. Chua & Haiyan Miao & Jörg Imberger & Peipei Yang, 2018. "Wind Shielding Impacts on Water Quality in an Urban Reservoir," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 32(11), pages 3549-3561, September.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Sofia Midauar Gondim Rocha & João Victor Barros da Silva & Wictor Edney Dajtenko Lemos & Francisco de Assis de Souza Filho & Iran Eduardo Lima Neto, 2022. "Two-Dimensional Modelling of the Mixing Patterns in a Tropical Semiarid Reservoir," Sustainability, MDPI, vol. 14(23), pages 1-15, December.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:15:y:2023:i:13:p:10313-:d:1183055. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.