Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021127 |
Three-Dimensional Effects of Artificial Mixing in a Shallow Drinking-Water Reservoir | |
Chen, Shengyang1; Little, John C.2; Carey, Cayelan C.3; McClure, Ryan P.3; Lofton, Mary E.3; Lei, Chengwang1 | |
2018 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:1页码:425-441 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; USA |
英文摘要 | Studies that examine the effects of artificial mixing for water-quality mitigation in lakes and reservoirs often view a water column with a one-dimensional (1-D) perspective (e.g., homogenized epilimnetic and hypolimnetic layers). Artificial mixing in natural water bodies, however, is inherently three dimensional (3-D). Using a 3-D approach experimentally and numerically, the present study visualizes thermal structure and analyzes constituent transport under the influence of artificial mixing in a shallow drinking-water reservoir. The purpose is to improve the understanding of artificial mixing, which may help to better design and operate mixing systems. In this reservoir, a side-stream supersaturation (SSS) hypolimnetic oxygenation system and an epilimnetic bubble-plume mixing (EM) system were concurrently deployed in the deep region. The present study found that, while the mixing induced by the SSS system does not have a distinct 3-D effect on the thermal structure, epilimnetic mixing by the EM system causes 3-D heterogeneity. In the experiments, epilimnetic mixing deepened the lower metalimnetic boundary near the diffuser by about 1 m, with 55% reduction of the deepening rate at 120 m upstream of the diffuser. In a tracer study using a 3-D hydrodynamic model, the operational flow rate of the EM system is found to be an important short-term driver of constituent transport in the reservoir, whereas the duration of the EM system operation is the dominant long-term driver. The results suggest that artificial mixing substantially alters both 3-D thermal structure and constituent transport, and thus needs to be taken into account for reservoir management. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428474000024 |
WOS关键词 | HYPOLIMNETIC OXYGENATION ; BUBBLING OPERATIONS ; DISSOLVED-OXYGEN ; ALGAL BLOOM ; LAKE ; DYNAMICS ; DESTRATIFICATION ; MINIMUM ; PHOSPHORUS ; STABILITY |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20845 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Sydney, Sch Civil Engn, Sydney, NSW, Australia; 2.Virginia Tech, Dept Civil & Environm Engn, Durham Hall, Blacksburg, VA USA; 3.Virginia Tech, Dept Biol Sci, Derring Hall, Blacksburg, VA USA |
推荐引用方式 GB/T 7714 | Chen, Shengyang,Little, John C.,Carey, Cayelan C.,et al. Three-Dimensional Effects of Artificial Mixing in a Shallow Drinking-Water Reservoir[J]. WATER RESOURCES RESEARCH,2018,54(1):425-441. |
APA | Chen, Shengyang,Little, John C.,Carey, Cayelan C.,McClure, Ryan P.,Lofton, Mary E.,&Lei, Chengwang.(2018).Three-Dimensional Effects of Artificial Mixing in a Shallow Drinking-Water Reservoir.WATER RESOURCES RESEARCH,54(1),425-441. |
MLA | Chen, Shengyang,et al."Three-Dimensional Effects of Artificial Mixing in a Shallow Drinking-Water Reservoir".WATER RESOURCES RESEARCH 54.1(2018):425-441. |
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