Application of Circular Bubble Plume Diffusers to Restore Water Quality in a Sub-Deep Reservoir | |
Chen Lan; Jingan Chen; Jingfu Wang; Jianyang Guo; Jia Yu; Pingping Yu; Haiquan Yang; Yong Liu | |
2017 | |
Source Publication | International Journal Environmental Research and Public Health
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Volume | 14Issue:11 |
Abstract | Circular bubble plume diffusers have been confirmed as an effective technology for the restoration of the deep water system, but have never been applied in sub-deep water system. In this study, circular bubble plume diffusers were used, for the first time, to restore water quality in the Aha Reservoir, a typical sub-deep reservoir in Southwest China. Axisymmetric intrusive gravity currents were formed with a horizontal radius of 250 m at the equilibrium depth and the intrusion of oxygen-enriched water occurred within the depth of 10-14 m, while thermal stratification remained intact. A total of 95% of the imported oxygen was dissolved, but most was consumed by organic matter and other reduced substances within the hypolimnion. The oxygen consumption of organic matter, NH4+ and remaining reduced materials, accounted for 41.4-52.5%, 25% and 13.3-24.4% of the total imported oxygen, respectively. Compared with the control sites, dissolved oxygen level in the hypolimnion increased 3-4 times, and concentrations of NH4+, total Fe and total Mn were reduced by 15.5%, 45.5% and 48.9%, respectively. A significant decrease in total phosphorus and nitrogen concentrations was observed in the experimental zone (0.04-0.02 mg/L and 1.9-1.7 mg/L, respectively). This indicates that circular bubble plumes have great potential for oxygenation of the hypolimnion and improving water quality in the sub-deep water system. Nevertheless, further efforts are needed to improve the discrete bubble model to elaborate the oxygen transmission dynamics and the plume formation processes in sub-deep water systems, incorporating oxygen consumption processes. |
Keyword | Bubble Plume Diffusers Sub-deep Water System Dissolved Oxygen Water Quality Consumption Fate Of Oxygen |
Indexed By | SCI |
Language | 英语 |
Document Type | 期刊论文 |
Identifier | http://ir.gyig.ac.cn/handle/42920512-1/7721 |
Collection | 环境地球化学国家重点实验室 |
Affiliation | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Guizhou Univ, Coll Resource & Environm Engn, Guiyang 550025, Guizhou, Peoples R China |
First Author Affilication | 中国科学院地球化学研究所 |
Corresponding Author Affilication | 中国科学院地球化学研究所 |
Recommended Citation GB/T 7714 | Chen Lan;Jingan Chen;Jingfu Wang;Jianyang Guo;Jia Yu;Pingping Yu;Haiquan Yang;Yong Liu. Application of Circular Bubble Plume Diffusers to Restore Water Quality in a Sub-Deep Reservoir[J]. International Journal Environmental Research and Public Health,2017,14(11). |
APA | Chen Lan;Jingan Chen;Jingfu Wang;Jianyang Guo;Jia Yu;Pingping Yu;Haiquan Yang;Yong Liu.(2017).Application of Circular Bubble Plume Diffusers to Restore Water Quality in a Sub-Deep Reservoir.International Journal Environmental Research and Public Health,14(11). |
MLA | Chen Lan;Jingan Chen;Jingfu Wang;Jianyang Guo;Jia Yu;Pingping Yu;Haiquan Yang;Yong Liu."Application of Circular Bubble Plume Diffusers to Restore Water Quality in a Sub-Deep Reservoir".International Journal Environmental Research and Public Health 14.11(2017). |
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