A study on, utilization of cooling capacity of hypolimnion and evaluation of water quality improvement in a reservoir

水库低水冷量利用及水质改善评价研究

• 批准号: 13650601
• 负责人: KOGA Kenichi
• 金额: $ 1.66万
• 依托单位: Saga University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650601/
• 关键词: Hypolimnion; Reservoir; Eutrophication; Cooling capacity; Heat exchange; Vertical mixing; 富栄養化対策; 寒冷栽培

In period of thermal stratification of deep. reservoirs, part of cool water of hypolimnion can be expected as energy resources for cooling especially in the summer season. In order to prevent water quality problems in the reservoir such as eutrophication etc., vertical mixing methods such as aeration are available. The concept of new method in this study is to utilize the cooling capacity of hypolimnion and also to improve the water quality by vertical mixing using the pumping systems. Through the feasibility study on a reservoir in Saga Prefecture, it is demonstrated that the estimated total cooling capacity, 2.1 X 10^8MJ/10^7m^3 (cool water of hypolimnion), can keep air volume of 10^5m^3 at 20℃ from May until October. In order to evaluate water quality improvement using this method, one-dimensional water quality model is developed. After calibrating the model for two reservoirs, effects of the water quality improvement by vertical mixing approach are evaluated. Also it is shown that the proposed technology have effect on water quality improvementt in the epihmnion in summer.

在深部热成层期。水库，部分冷水的低层可以预期作为能源的冷却，特别是在夏季。为了防止水库富营养化等水质问题，垂直混合方法如曝气是可用的。本研究的新概念是利用低水层的冷却能力，并通过使用泵系统的垂直混合来改善水质。通过对佐贺县某水库的可行性研究，证明该水库的总制冷量为2.1 × 10^8MJ/10^7m^3（浅水层冷水），可在5 ~ 10月维持10^5m^3的20℃空气量。为了评价该方法对水质的改善效果，建立了一维水质模型。在对两个水库的模型进行标定后，对垂向混合法的水质改善效果进行了评价。试验结果表明，该工艺对夏季浅水区水质有一定的改善作用。

项目成果

川邊学, 古賀憲一, 荒木宏之ら: "ボックスモデルを用いたダム貯水池の水質モデル"土木学会第57回年次学術講演会. 507-208 (2002)

Manabu Kawabe、Kenichi Koga、Hiroyuki Araki 等：“使用箱模型的大坝水库水质模型”第 57 届日本土木工程学会学术会议 507-208（2002 年）。

松山泰也, 古賀憲一, 荒木宏之ら: "ボックスモデルを用いたダム貯水池の水質解析"土木学会西部支部研究発表会. 476-477 (2004)

Yasunari Matsuyama、Kenichi Koga、Hiroyuki Araki 等人：“使用箱模型进行水库水质分析”日本土木工程师学会西部分会研究报告 476-477 (2004)。

KAWABE, MANABU et al.: "Two-dimensional water quality simulation in reservoir using Lagrangian elements method"Proc. of Annual Conference of Western Region, JSCE. 478-479 (2004)

KAWABE、MANABU 等：“利用拉格朗日元法进行水库二维水质模拟”Proc.

KOGA, KENICHI et al.: "A study on utilization of cooling capacity of hypolimnion and improvement of water quality in reservoir"Environmental Systems Research. Vol.25. 431-438 (1997)

KOGA，KENICHI 等：“利用低水库冷却能力和改善水库水质的研究”环境系统研究。

HUKUDA, DAISUKE et al.: "Water quality simulation in reservoir using box model"Proc. of Annual Conference of Western Region, JSCE. 464-465 (2002)

HUKUDA，DAISUKE 等：“使用箱模型进行水库水质模拟”Proc。