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    Ecological Optimal Operation of Hydropower Stations to Maximize Total Phosphorus Export

    Source: Journal of Water Resources Planning and Management:;2020:;Volume ( 146 ):;issue: 009
    Author:
    Jiahui Deng
    ,
    Yu Li
    ,
    Bo Xu
    ,
    Wei Ding
    ,
    Huicheng Zhou
    ,
    Arthur Schmidt
    DOI: 10.1061/(ASCE)WR.1943-5452.0001275
    Publisher: ASCE
    Abstract: Cascade reservoirs have interrupted the distribution and transportation of nutrients, which brings environmental and ecological problems. However, the current ecological operation methods focusing on the hydrologic regime cannot solve these problems. This paper presents an ecological optimal operation method that aims at restoring the transport pattern of biogenic substances. First, this paper establishes an optimization model that combines multiobjective reservoir operations with a dynamic mass balance calculation of total phosphorus (TP), taking the maximum TP export as the ecological objective, and a traditional model taking hydrologic regime as the ecological objective for further comparison. Then, the upper Mekong River Basin (i.e., the Lancang River Basin) is taken as a case study to investigate the competitive relationship between power generation and TP export under varying minimum outputs. The mechanism of TP export is then analyzed and the concept of optimum period for TP export is proposed. The results and analyses show that a competitive relationship between the power generation originates from the differences between the optimal operation processes for maximum TP export and maximum power generation. Lower water level, lower flow in nonflood season, and higher flow in flood season, especially in the optimum period for TP export are conducive to TP export. This method is then compared to the traditional method, which considers hydrologic regimes as the ecological objective under different conditions. The results show that reservoirs with higher sedimentation coefficient and larger capacity should consider more about the biogenic substances; otherwise, the hydrologic regime and biogenic substances can be substituted for each other to some extent.
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      Ecological Optimal Operation of Hydropower Stations to Maximize Total Phosphorus Export

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4267911
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    contributor authorJiahui Deng
    contributor authorYu Li
    contributor authorBo Xu
    contributor authorWei Ding
    contributor authorHuicheng Zhou
    contributor authorArthur Schmidt
    date accessioned2022-01-30T21:16:21Z
    date available2022-01-30T21:16:21Z
    date issued9/1/2020 12:00:00 AM
    identifier other%28ASCE%29WR.1943-5452.0001275.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4267911
    description abstractCascade reservoirs have interrupted the distribution and transportation of nutrients, which brings environmental and ecological problems. However, the current ecological operation methods focusing on the hydrologic regime cannot solve these problems. This paper presents an ecological optimal operation method that aims at restoring the transport pattern of biogenic substances. First, this paper establishes an optimization model that combines multiobjective reservoir operations with a dynamic mass balance calculation of total phosphorus (TP), taking the maximum TP export as the ecological objective, and a traditional model taking hydrologic regime as the ecological objective for further comparison. Then, the upper Mekong River Basin (i.e., the Lancang River Basin) is taken as a case study to investigate the competitive relationship between power generation and TP export under varying minimum outputs. The mechanism of TP export is then analyzed and the concept of optimum period for TP export is proposed. The results and analyses show that a competitive relationship between the power generation originates from the differences between the optimal operation processes for maximum TP export and maximum power generation. Lower water level, lower flow in nonflood season, and higher flow in flood season, especially in the optimum period for TP export are conducive to TP export. This method is then compared to the traditional method, which considers hydrologic regimes as the ecological objective under different conditions. The results show that reservoirs with higher sedimentation coefficient and larger capacity should consider more about the biogenic substances; otherwise, the hydrologic regime and biogenic substances can be substituted for each other to some extent.
    publisherASCE
    titleEcological Optimal Operation of Hydropower Stations to Maximize Total Phosphorus Export
    typeJournal Paper
    journal volume146
    journal issue9
    journal titleJournal of Water Resources Planning and Management
    identifier doi10.1061/(ASCE)WR.1943-5452.0001275
    page11
    treeJournal of Water Resources Planning and Management:;2020:;Volume ( 146 ):;issue: 009
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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