水上光伏覆盖对明渠水质的影响规律研究

闫琳琳; 练继建; 姚烨; 宋芷萱

doi:10.19912/j.0254-0096.tynxb.2023-0417

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (7) : 548-557. DOI: 10.19912/j.0254-0096.tynxb.2023-0417

水上光伏覆盖对明渠水质的影响规律研究

闫琳琳^1,2, 练继建^1,2, 姚烨, 宋芷萱^1,2

作者信息 +

EFFECTS OF WATER PHOTOVOLTAIC PROJECT ON WATER QUALITY IN OPEN CHANNELS

Yan Linlin^1,2, Lian Jijian^1,2, Yao Ye, Song Zhixuan^1,2

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文章历史 +

摘要

水上光伏带来的太阳短波辐照度变化对缓解输水明渠藻类增殖问题的效果亟需评估。以南水北调中线干渠为例,建立干渠安阳河节制闸至坟庄河节制闸渠段的水动力和水质模型,分析比较明渠水面悬浮式覆盖水上光伏带来的太阳短波辐照度变化和水上光伏不同覆盖位置对渠道水温和水质的影响规律。研究表明：在开展水上光伏项目时,渠道接收的太阳短波辐照度降低会使得水温、藻生物量和溶解氧含量下降,营养盐含量有所上升。太阳短波辐照度降低50%后,藻生物量开始逐渐降低。在覆盖率和透射率一定的情况下,不同覆盖位置情景下对藻生物量的削减峰值区别较小。当太阳短波辐照度由高到低逐渐变化时,流速变化对藻生物量的影响幅度呈先升高后下降趋势。

Abstract

It is urgent to analyze the effect of solar shortwave radiation reduction caused by water photovoltaic on alleviating algae proliferation in open channels. Taking the middle route of South-to-North Water Diversion project as an example, the hydrodynamic and water quality coupling model of the main canal from Anyang River control gate to Fenzhuang River control gate was established. The influence of solar shortwave radiation reduction caused by water photovoltaic covering on the open channel and the influence of different cover positions on water temperature and water quality were analyzed and compared. The coupling effect of flow velocity and solar shortwave radiation on algae biomass was studied. The results showed that when carrying out the water photovoltaic project, the reduction of the solar shortwave radiation received by the channel will lower the water temperature, algae biomass and dissolved oxygen concentration, but increase the nutrient concentration. When the solar shortwave radiation decreases by 50%, the algae biomass begins to reduce gradually. Under the same coverage rate and transmittance scenario, the peak reduction differences of algae biomass among different covering locations are small. When the solar shortwave radiation amount gradually changes from high to low, the influence degree of velocity change on algae biomass shows a trend of first increasing and then decreasing.

导出引用

闫琳琳, 练继建, 姚烨, 宋芷萱. 水上光伏覆盖对明渠水质的影响规律研究[J]. 太阳能学报. 2024, 45(7): 548-557 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0417

Yan Linlin, Lian Jijian, Yao Ye, Song Zhixuan. EFFECTS OF WATER PHOTOVOLTAIC PROJECT ON WATER QUALITY IN OPEN CHANNELS[J]. Acta Energiae Solaris Sinica. 2024, 45(7): 548-557 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0417

中图分类号： TV68 X522

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