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논문 기본 정보

자료유형
학술저널
저자정보
Heonseop Eom (Kangwon National University) Sami Flimban (Kangwon National University) Anup Gurung (Kangwon National University) Heejun Suk (Korea Institute of Geoscience and Mineral Resources) Yongcheol Kim (Korea Institute of Geoscience and Mineral Resources) Yong Seong Kim (Kangwon National University) Sokhee P. Jung (Chonnam National University) Sang-Eun Oh (Kangwon National University)
저널정보
대한환경공학회 Environmental Engineering Research Environmental Engineering Research 제25권 제6호
발행연도
2020.12
수록면
841 - 846 (6page)

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초록· 키워드

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Managed aquifer recharge (MAR), an intentional storage of excess water to an aquifer, is becoming a promising water resource management tool to cope with the worldwide water shortage. Bioclogging is a commonly encountered operational issue that lowers hydraulic conductivity and overall performance in MAR. The current study investigates the impact of carbon and nitrogen in recharge water on bioclogging in MAR. For this investigation, continuous-flow columns packed with sand grains were operated with influents having 0 (C1), 5 (C2), and 100 mg/L (C3) of glucose with or without introduction of nitrate. Hydraulic conductivity was analyzed to evaluate bioclogging in the systems. In C1 and C2, hydraulic conductivity was not significantly changed overall. However, hydraulic conductivity in C3 was decreased by 28.5% after three weeks of operation, which appears to be attributed to generation of fermentation bacteria. Introduction of nitrogen to C3 led to a further decrease in hydraulic conductivity by 25.7% compared to before it was added, most likely due to stimulation of denitrifying bacteria. These findings indicate that high carbon contents and introduction of additional nitrogen in recharge water cause serious bioclogging in MAR, suggesting the necessity for controlling quality of recharge water.

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ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References

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