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Seasonal Release Potential of Sediments in Reservoirs and its Impact on Water Quality Assessment

Author

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  • Suduan Hu

    (Institution of Water and Environment Research, Dalian University of Technology, Dalian 116024, China)

  • Tianxiang Wang

    (Institution of Water and Environment Research, Dalian University of Technology, Dalian 116024, China
    China Water Resources Pearl River Planning Surveying & Designing Co, Ltd, Guangzhou 510610, China
    Jiangsu Smart Factory Engineering Research Center, Huaiyin Institute of Technology, Huaian 223200, China)

  • Shiguo Xu

    (Institution of Water and Environment Research, Dalian University of Technology, Dalian 116024, China)

  • Lingxiao Ma

    (Institution of Water and Environment Research, Dalian University of Technology, Dalian 116024, China)

  • and Xinguo Sun

    (Jiangsu Smart Factory Engineering Research Center, Huaiyin Institute of Technology, Huaian 223200, China)

Abstract

Reservoir sediments act as important receivers and sources for nutrients in the overlaying water. To determine the sediments adsorption and release characteristics and their impacts on water quality, surface sediments samples collected from Biliuhe reservoir in August 2015 were studied through simulation experiments in a laboratory. The results demonstrated that the equilibrium concentrations (EC 0 ) of ammonia nitrogen (NH 4 + –N) and total phosphorus (TP) were 8.29 mg/L and 0.025 mg/L, respectively, which were both higher than the average concentrations in the overlying water. Therefore, the sediments of Biliuhe reservoir mainly acted as the pollution sources for NH 4 + –N and TP, and the release to water showed a seasonal variation. When potential release amounts were considered, the average concentrations of NH 4 + –N and TP in the overlaying water could reach 6.4 mg/L and 0.21 mg/L, respectively, which significantly exceeded the current contents. Further, water quality exhibited a decreased tendency after taking the release potential of nutrients into account of water quality assessment. Among the samples, 42% and 33% of them in summer and autumn exceeded the third level of the National Surface Water Quality Standards of China (GB3838-2002). The results indicated that sediments release potential had an unignored influence on water quality during various seasons.

Suggested Citation

  • Suduan Hu & Tianxiang Wang & Shiguo Xu & Lingxiao Ma & and Xinguo Sun, 2019. "Seasonal Release Potential of Sediments in Reservoirs and its Impact on Water Quality Assessment," IJERPH, MDPI, vol. 16(18), pages 1-17, September.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:18:p:3303-:d:265378
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    References listed on IDEAS

    as
    1. Wuxia Bi & Baisha Weng & Zhe Yuan & Mao Ye & Cheng Zhang & Yu Zhao & Dengming Yan & Ting Xu, 2018. "Evolution Characteristics of Surface Water Quality Due to Climate Change and LUCC under Scenario Simulations: A Case Study in the Luanhe River Basin," IJERPH, MDPI, vol. 15(8), pages 1-18, August.
    2. Ming Kong & Jianying Chao & Wei Zhuang & Peifang Wang & Chao Wang & Jun Hou & Zhaoshi Wu & Longmian Wang & Guang Gao & Yu Wang, 2018. "Spatial and Temporal Distribution of Particulate Phosphorus and Their Correlation with Environmental Factors in a Shallow Eutrophic Chinese Lake (Lake Taihu)," IJERPH, MDPI, vol. 15(11), pages 1-12, October.
    3. Qibiao Yu & Fang Wang & Weijin Yan & Fengsong Zhang & Shucong Lv & Yanqiang Li, 2018. "Carbon and Nitrogen Burial and Response to Climate Change and Anthropogenic Disturbance in Chaohu Lake, China," IJERPH, MDPI, vol. 15(12), pages 1-18, December.
    4. Shiguo Xu & Tianxiang Wang & Suduan Hu, 2015. "Dynamic Assessment of Water Quality Based on a Variable Fuzzy Pattern Recognition Model," IJERPH, MDPI, vol. 12(2), pages 1-19, February.
    5. Xiangju Cheng & Yingxue Zeng & Zhenren Guo & Liangsheng Zhu, 2014. "Diffusion of Nitrogen and Phosphorus Across the Sediment-Water Interface and In Seawater at Aquaculture Areas of Daya Bay, China," IJERPH, MDPI, vol. 11(2), pages 1-16, January.
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