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DOI10.1007/s11356-024-32431-w
Effects of storm runoff on the spatial-temporal variation and stratified water quality in Biliuhe Reservoir, a drinking water reservoir
Li, Weijia; Chen, Xiaoqiang; Xu, Shiguo; Wang, Tianxiang; Han, Dongning; Xiao, Yao
发表日期2024
ISSN0944-1344
EISSN1614-7499
起始页码31
结束页码13
卷号31期号:13
英文摘要Stormflow runoff is an important non-point source of pollution in drinking water reservoirs. Storm runoff is usually very turbid and contains a high concentration of organic matter, therefore affecting water quality when it enters reservoirs. In order to investigate the impact of storm runoff on spatial-temporal variation and stratification of water quality during this rainstorm event, the inflow process of the storm runoff was studied through a combination of field investigation and simulation using the Delft3D-Flow model. Water samples were collected from Biliuhe Reservoir at four different periods: before storm runoff, storm runoff flood peak period, 1 week after storm runoff, and 5 weeks after storm runoff. The results showed that the input of storm runoff resulted in a significant increase in the nitrogen (N) and phosphorus (P) in the reservoir water, especially in the reservoir entrance. The concentrations of total nitrogen (TN) and total phosphorus (TP) gradually decreased after the flood peak period; however, the average concentrations of TN and TP in the entire reservoir remained higher than those before the storm runoff levels for an extended duration. The storm runoff will greatly contribute to the contamination of water quality in a reservoir, and the water quality cannot be quickly restored by self-purification in the short term. During the flood peak period, under the influence of density current, the electrical conductivity (EC) and turbidity increased significantly in the water depth of 10-15 m, so that the reservoir water had obvious stratification between 10 and 15 m. The form of pollutants in storm runoff was mostly in particle phosphorus. Total particulate phosphorus (TPP) concentration was 0.015 +/- 0.011 mg/L, accounting for 44.12% of total phosphorus (TP) concentration in storm runoff flood peak period. The process of a rainstorm caused runoff, which carried high levels of turbidity, particulate phosphorus, and organic matter. The storm runoff disrupts the stratification of the reservoir water. In terms of vertical distribution, the turbidity in the reservoir area increased to 73.75 NTU. Therefore, the occurrence of significant turbidity density flow in the reservoir is frequently accompanied by intense rainfall events. Gaining insights into the impact of storm runoff on the vertical distribution of reservoir turbidity can help managers in selecting an appropriate inlet height to mitigate high turbidity outflow.
英文关键词Storm runoff; Drinking water reservoir; Stratified water quality; Nitrogen; Phosphorus; Biliuhe Reservoir
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:001162954200001
来源期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/305967
作者单位Dalian University of Technology; Dalian University of Technology
推荐引用方式
GB/T 7714
Li, Weijia,Chen, Xiaoqiang,Xu, Shiguo,et al. Effects of storm runoff on the spatial-temporal variation and stratified water quality in Biliuhe Reservoir, a drinking water reservoir[J],2024,31(13).
APA Li, Weijia,Chen, Xiaoqiang,Xu, Shiguo,Wang, Tianxiang,Han, Dongning,&Xiao, Yao.(2024).Effects of storm runoff on the spatial-temporal variation and stratified water quality in Biliuhe Reservoir, a drinking water reservoir.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,31(13).
MLA Li, Weijia,et al."Effects of storm runoff on the spatial-temporal variation and stratified water quality in Biliuhe Reservoir, a drinking water reservoir".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 31.13(2024).
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