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http://dx.doi.org/10.17820/eri.2016.3.4.263

Hydraulic Impact Scope and Dissolved Oxygen Distribution by the Micro-bubble Aeration in an Artificial Lake  

Choi, Sunhwa (Rural Research Institute, Korea Rural Community Corporation)
Park, Hyungseok (Department of Environmental Engineering, Chungbuk National University)
Publication Information
Ecology and Resilient Infrastructure / v.3, no.4, 2016 , pp. 263-271 More about this Journal
Abstract
This study investigated the hydraulic impact scope and dissolved oxygen (DO) concentration distribution by the micro-bubble aeration in the Juksan Lake located in Asan city in Chungcheongnam-do province. A tracing experiment for hydraulic impact scope was used which constituted a 20% rhodamine solution. A 160 m-guideline was installed in the horizontal direction of the micro-bubble jet flow and the rhodamine concentration, water temperature, and DO concentration were measured at depths of 1 m, 2 m, and 3 m at intervals of 10 m. In the Juksan Lake, the effective range of jet flow discharged by the micro-bubble generator was about 40 m, and after then the jet plume moved up to 80 m to 120 m through the advection and diffusion processes of ambient water. DO concentration in the lake was maintained at 7.4-12.6 mg/L during tracking experiment. The DO of the lake sediments improved from 0.2 mg/L to 8.0 mg/L after applying micro-bubble aeration. In conclusion, the micro-bubble aeration can be an effective technology for the management and improvement of water quality in an agricultural reservoir.
Keywords
Artificial lake; Dissolved oxygen (DO); Hydraulic impact scope; Micro-bubble; Rhodamine;
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Times Cited By KSCI : 1  (Citation Analysis)
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