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http://dx.doi.org/10.7857/JSGE.2022.27.3.001

Case for Detection and Prevention of Inflow Section for Contaminant through Annular Space in Borehole, Jeju Island  

Song, Sung-Ho (Rural Research Institute, Korea Rural Community Corporation)
Hwangbo, Dongjun (Jeju Headquarter, Korea Rural Community Corporation)
Kim, Jin-Sung (Gyungbuk Headquarter, Korea Rural Community Corporation)
Yang, Won-Seok (Water Policy Division, Jeju Special Self-Governing Province)
Publication Information
Journal of Soil and Groundwater Environment / v.27, no.3, 2022 , pp. 1-10 More about this Journal
Abstract
Most wells developed in Jeju island before the enactment of the Groundwater Management Ordinance in 2002 are vulnerable to aquifer contamination due to inflow of upper groundwater having the high concentration of nitrate nitrogen, likely due to incomplete grouting in upper section of the wells. Although these wells require entire reinstallation, it is often necessary to rehabilitate the existing wells due to various constraints. Therefore, to identified the inflow section of contaminants, the thermal level sensor (TLS) technique was firstly applied for three wells, which enables to monitor temperature variations in every 50 cm depth. Then, the grouting material was injected to the upper section to prevent the inflow of upper contaminated groundwater into the entire aquifer. By applying TLS technique, it was found that the temperature deviations in the upper groundwater inflow section decreased sharply. Moreover, both the change in the concentration of nitrate nitrogen in the rainy/dry seasons and the average concentrations were found to decrease rapidly after grouting material injection. Consequently, the application of TLS proposed in the study turned out to be appropriate to prevent aquifer contamination.
Keywords
Aquifer contamination; Nitrate nitrogen; Thermal level sensor (TLS); Grouting material injection; Jeju Island;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 Houben, G. and Treskatis, C., 2007, Water Well: Rehabilitation and Reconstruction, McGraw-Hill, N.Y.
2 Kim, M., Kang, B.R., Cho, H.N., Choi, S.O., Yang, W.S., and Park, W., 2020, Application and assessment of regrouting method for improperly constructed wells in Jeju Island, J. Soil Groundw. Environ., 25(3), 43-51 (in Korean with English abstract).   DOI
3 Park, W.B., Kim, G.P., Lee, J.H., Moon, D.C., Kim, S.J., Koh, G.W., Pang, S.J., and Pang, I.C., 2011, Variation of groundwater level and recharge volume in Jeju Island, J. Environ. Sci., 20(7), 857-872 (in Korean with English abstract).
4 Koh, E.H., Lee, E.H., and Lee, K.K., 2016, Impact of leaky wells on nitrate cross-contamination in layered aquifer system: Methodology for and demonstration of quantitative assessment and prediction, J. Hydro., 541, 1133-1144.   DOI
5 Cho, H.N., Choi, S.O., Park, J.O., Bae, S.D., Lee, B.Y., and Choi, S.I., 2019, A study on grouting technology using expansion double packers for sectional blocking between groundwater borehole and inner casing, J. Soil Groundw. Environ., 24(1), 35-42 (in Korean with English abstract).   DOI
6 Drusova, S., Wagterveld, R.M., Keesman, K.J., and Offerhaus, H.L., 2020, Temperature and consolidation sensing near drinking water wells using fiber bragg grating sensors, Water, 12(12), 3572.   DOI
7 JSSGP (Jeju Special Self-Governing Province) and JRI (Jeju Research Institute), 2019, Research report on improvement of groundwater quality and prevention of groundwater contamination.
8 JSSGP (Jeju Special Self-Governing Province) and KRC-J (Jeju Headquarter, Korea Rural Community Corporation), 2020, Report for establishment of groundwater quality measurement network and operation plan.
9 Gass, T.E., Bennett, T.W., Miller, J., and Miller, R., 1980, Manual of Water Well Maintenance and Rehabilitation Technology, National Water Well Association, Dublin.
10 KRC (Korea Rural Community Corporation), 1997, A Study of Appropriate Post Management Methods for Tube Wells.
11 Song, S.H., Hwangbo, D.J., Jang, K.Y., Kim, J.S., Seo, S.K., and Yang, W.S., 2021, Evaluation of nitrate nitrogen contamination degree in groundwater wells, Jeju Island, J. Soil Groundw. Environ., 26(4), 8-19 (in Korean with English abstract).   DOI
12 Song, S.H., Lee, B.S., and An, J.G., 2016, Quantitative evaluation for improvement effects of performance after mechanical rehabilitation treatments on agricultural groundwater well, J. Soil Groundw. Environ., 21(4), 42-49 (in Korean with English abstract).   DOI