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S-type Dissolved Oxygen Distribution along Water Depth in a Canyon-shaped and Algae Blooming Water Source Reservoir: Reasons and Control

Author

Listed:
  • Yuwei Huang

    (Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400444, China)

  • Chun Yang

    (Faculty of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400444, China)

  • Chengcheng Wen

    (Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi’an University of Architecture and Technology, Xi’an 710055, China
    Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)

  • Gang Wen

    (Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi’an University of Architecture and Technology, Xi’an 710055, China
    Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)

Abstract

Dissolved oxygen (DO) is a crucial indicator of water quality. DO usually shows a monotonic decrease along water depth during thermal stratification in reservoir, whereas metalimnetic oxygen minimum (MOM) is observed in some cases. Although MOM phenomena have been reported in different areas, the characteristics of different reservoirs are greatly different, and few comprehensive studies have been published regarding MOM in Chinese drinking water source reservoirs. The DO distribution along water depth was determined and the detailed reasons were clarified by two-years of field monitoring. In addition the effect of water lifting aerators (WLAs) on DO improvement was investigated in the Lijiahe Reservoir in Northwest China. A typical S-type DO distribution with two anaerobic water layers, below the epilimnion (10–25 m water depth) and above the sediment (bottom water), was observed derived from the decomposition of dead algae or organic matter and the restriction of DO vertical exchange. Moreover, after WLAs’ operation since 10 June 2018, the water body was completely mixed and DO was rich and uniform along water depth by eliminating the water stratification and inhibiting algae growth. The deep understanding of the DO distribution in a deep canyon-shaped reservoir and the technical support for reservoir restoration are meaningful for optimizing reservoir management.

Suggested Citation

  • Yuwei Huang & Chun Yang & Chengcheng Wen & Gang Wen, 2019. "S-type Dissolved Oxygen Distribution along Water Depth in a Canyon-shaped and Algae Blooming Water Source Reservoir: Reasons and Control," IJERPH, MDPI, vol. 16(6), pages 1-14, March.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:6:p:987-:d:215206
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    References listed on IDEAS

    as
    1. Jian-Chao Shi & Ting-Lin Huang & Gang Wen & Fei Liu & Xiao-Peng Qiu & Bao-Shan Wang, 2016. "The Variation Characteristic of Sulfides and VOSc in a Source Water Reservoir and Its Control Using a Water-Lifting Aerator," IJERPH, MDPI, vol. 13(4), pages 1-13, April.
    2. He, Guojian & Fang, Hongwei & Bai, Sen & Liu, Xiaobo & Chen, Minghong & Bai, Jing, 2011. "Application of a three-dimensional eutrophication model for the Beijing Guanting Reservoir, China," Ecological Modelling, Elsevier, vol. 222(8), pages 1491-1501.
    3. Weixing Ma & Tinglin Huang & Xuan Li & Zizhen Zhou & Yang Li & Kang Zeng, 2015. "The Effects of Storm Runoff on Water Quality and the Coping Strategy of a Deep Canyon-Shaped Source Water Reservoir in China," IJERPH, MDPI, vol. 12(7), pages 1-17, July.
    Full references (including those not matched with items on IDEAS)

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