지하수 오염복원에서 현장규모 이방성의 효과 = Effects of Site-scale Anisotropy of an Aquifer on Groundwater Remediation

다국어 초록 (Multilingual Abstract)

As a preliminary survey to improve efficiency of well-based permeable reactive barrier system for groundwater remediation, this site-scale study was carried to identify the flowpaths and controlling factors of plume at a remediation site in Suwon City, Korea. A total of 22 monitoring wells were installed as a grid system in the $4m{\times}4m$ square area by 1-m interval. For the groundwater characterization, various tests were performed including water-level monitoring, water sampling & analysis, pumping and slug tests, and tracer tests. The aquifer appeared to be unconfined with hydraulic conductivities (K) ranging from $2.6{\times}10^{-4}cm/s$ to $9.5{\times}10^{-3}cm/s$. The average linear velocity of groundwater was estimated to be $2.94{\times}10^{-6}m/s$, and the longitudinal dispersivity of a conservative tracer to be $5.94{\times}10^{-7}m^2/s$. Groundwater plume moves preferentially through the high-K zones, and the relatively high ion concentrations along the low-K zones implying deterred groundwater flow. Consequently, the spatial variation of hydraulic conductivity caused by aquifer heterogeneity and anisotropy appears to be the most important factor to maximize the effect of plume treatment system for application of in-situ groundwater remediation techniques.

참고문헌 (Reference)

1 양민준, "해바라기, 갓, 강낭콩을 이용한 수생법(Rhizofiltration)의 우라늄으로 오염된 지하수 정화 효율 규명" 한국지하수토양환경학회 13 (13): 30-39, 2008

2 손주형, "용존공기가압부상장치가 포함된 화학적 처리공정에 의한 오염 지하수 정화" 대한자원환경지질학회 35 (35): 9-588, 2002

3 송나인, "무기응집제를 이용한 중금속오염 지하수 정화 연구" 대한지질학회 41 (41): 253-267, 2005

4 장순웅, "디젤오염 토양 및 지하수 복원을 위한 공기주입정화법 실험실 연구 :공기주입량과 공기주입방식의 영향" 한국지하수토양환경학회 11 (11): 10-17, 2006

5 농림수산식품부, "농촌지하수의 질산성질소 오염에 대한 현장 정화처리 기술 개발"

6 이민희, "과산화수소를 이용한 현장원위치 화학적 산화법과 공기분사법(Air-sparging)을 연계한 디젤 오염 토양/지하수 동시 정화 실내 실험 연구" 한국지하수토양환경학회 11 (11): 8-17, 2006

7 소효은, "계면활성제 첨가에 따른 지하수 폭기법의 폭기효율 변화 연구" 대한자원환경지질학회 35 (35): 4-428, 2002

8 이민희, "계면활성제 원위치 토양세정법을 이용한 유류 오염지역 토양？지하수 정화 실증시험" 한국지하수토양환경학회 7 (7): 77-86, 2002

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12 Lee, B.S, "Efficacy of Controlled-release KMnO4(CRP) for Controlling Dissolved TCE Plume in Groundwater : A Large Flow-tank Study" 74 : 745-750, 2009

13 Lee, E.S, "Characterization of Controlled-release KMnO4 (CRP) Barrier System for Groundwater Remediation: A pilot-scale flow-tank study" 71 : 902-910, 2008

14 Fetter, C.W, "Allpied Hydrogeology" Prentice Hall 598-, 2001

15 환경부, "2008년 지하수 수질측정망 운영결과"