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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 PublicationInternational Journal Environmental Research and Public Health
Volume14Issue: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.

KeywordBubble Plume Diffusers Sub-deep Water System Dissolved Oxygen Water Quality Consumption Fate Of Oxygen
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/7721
Collection环境地球化学国家重点实验室
Affiliation1.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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