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Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China

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  • Gula Tang

    (State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
    The Engineering Science, Computer Science and Imaging Laboratory, The National Center for Scientific Research, University of Strasbourg, Illkirch 67412, France
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Yunqiang Zhu

    (State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
    Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China)

  • Guozheng Wu

    (Southern Trunk Channel Management Office of South-to-North Water Diversion Project, Beijing 100195, China)

  • Jing Li

    (Heilongjiang Provincial Research Institute of Environmental Science, Harbin 150056, China)

  • Zhao-Liang Li

    (The Engineering Science, Computer Science and Imaging Laboratory, The National Center for Scientific Research, University of Strasbourg, Illkirch 67412, France
    Key Laboratory of Agri-informatics, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China)

  • Jiulin Sun

    (State Key Laboratory of Resources and Environmental Information Systems, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
    Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China)

Abstract

In this study, the Mudan River, which is the most typical river in the northern cold region of China was selected as the research object; Environmental Fluid Dynamics Code (EFDC) was adopted to construct a new two-dimensional water quality model for the urban sections of the Mudan River, and concentrations of COD Cr and NH 3 N during ice-covered and open-water periods were simulated and analyzed. Results indicated that roughness coefficient and comprehensive pollutant decay rate were significantly different in those periods. To be specific, the roughness coefficient in the ice-covered period was larger than that of the open-water period, while the decay rate within the former period was smaller than that in the latter. In addition, according to the analysis of the simulated results, the main reasons for the decay rate reduction during the ice-covered period are temperature drop, upstream inflow decrease and ice layer cover; among them, ice sheet is the major contributor of roughness increase. These aspects were discussed in more detail in this work. The model could be generalized to hydrodynamic water quality process simulation researches on rivers in other cold regions as well.

Suggested Citation

  • Gula Tang & Yunqiang Zhu & Guozheng Wu & Jing Li & Zhao-Liang Li & Jiulin Sun, 2016. "Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China," IJERPH, MDPI, vol. 13(4), pages 1-15, April.
    • Handle: RePEc:gam:jijerp:v:13:y:2016:i:4:p:408-:d:67799
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    References listed on IDEAS

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    1. Solomon Gebre & Netra Timalsina & Knut Alfredsen, 2014. "Some Aspects of Ice-Hydropower Interaction in a Changing Climate," Energies, MDPI, vol. 7(3), pages 1-15, March.
    2. Wu, Guozheng & Xu, Zongxue, 2011. "Prediction of algal blooming using EFDC model: Case study in the Daoxiang Lake," Ecological Modelling, Elsevier, vol. 222(6), pages 1245-1252.
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    Cited by:

    1. Muhammad Mazhar Iqbal & Muhammad Shoaib & Hafiz Umar Farid & Jung Lyul Lee, 2018. "Assessment of Water Quality Profile Using Numerical Modeling Approach in Major Climate Classes of Asia," IJERPH, MDPI, vol. 15(10), pages 1-26, October.
    2. Lei Tang & Xiangdong Pan & Jingjie Feng & Xunchi Pu & Ruifeng Liang & Ran Li & Kefeng Li, 2019. "Experimental Investigation on the Relationship Between COD Degradation and Hydrodynamic Conditions in Urban Rivers," IJERPH, MDPI, vol. 16(18), pages 1-12, September.
    3. Linda Sarpong & Yiping Li & Eyram Norgbey & Amechi S. Nwankwegu & Yue Cheng & Salifu Nasiru & Isaac Kwesi Nooni & Victor Edem Setordjie, 2020. "A Sediment Diagenesis Model of Seasonal Nitrate and Ammonium Flux Spatial Variation Contributing to Eutrophication at Taihu, China," IJERPH, MDPI, vol. 17(11), pages 1-14, June.

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