Original Article

Econ. Environ. Geol. 2020; 53(2): 133-145

Published online April 30, 2020

https://doi.org/10.9719/EEG.2020.53.2.133

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Distribution of Metallic Elements Contamination in River Deposits and Farmland in the Vicinity of an Abandoned Korean Mine

Hwan Lee1 and Yoonjin Lee2*

1SG Institute of Environment Science and Technology, Gunsan, Jeonbuk 54012, Korea
2Department of General Education, Konyang University, Daejeon 35365, Korea

Correspondence to : *leeyj@konyang.ac.kr

Received: September 23, 2019; Revised: March 6, 2020; Accepted: March 20, 2020

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

Soil in mine waste-rock fields, and at the pithead, sediments and farmlands around an abandoned mine in the Chungcheong Province of South Korea were investigated to assess the distribution of metallic elements and to understand the scope of the pollution. Reddening was observed from the mine up to a distance of 61 m. Losses of waste rock around the mine were assessed over a section of 1800 m3. Yellowish precipitates on the bottom of a stream were identified as ferrihydrite and goethite. For anions, a mean sulfate ion level over 773.6 mg/L was found during August in the river water samples. Mine drainage at the site was shown to have a pH of 4.9 and a sulfate concentration of 1557.8 mg/L during the August rainy season. A possible cause of the metallic element contamination in the mine is waste-rock loss, because mine waste-rock is located on the slope in this area. In conclusion, the total soil area to be treated, based on the amount that exceeded the recommended Korean soil pollution levels, was assessed to be 10,297 m2.

Keywords metallic element contamination, abandoned mine, acid mine drainage, soil contamination

폐광산 인근 농경지 및 하천 퇴적토의 중금속 오염 특성

이환1 · 이윤진2*

1SG 환경기술연구원 연구본부, 2건양대학교 휴머니티 칼리지

요 약

본 연구는 대한민국 충청도에 위치한 폐광산을 대상으로 오염경로를 분석하기 위해 갱구, 하천 퇴적토 및 인근 농경지의 중금속 오염 확산 특성을 조사하였다. 연구대상지역에서 갱내수 유출지점으로부터 약 61 m까지 적화현상이 관찰되었고 총 1800 m3의 폐석 유실구간이 확인하였다. 갱내수는 우기기간동안 pH 4.9, 황산염의 농도 1557.8 mg/L를 나타냈다. 동일한 기간에 황산염 농도는 하천시료에서 평균 773.6 mg/L으로 나타났다. 하천에서 채취한 황갈색 시료를 분석한결과 침철석과 페리하이드라이트(ferrihydrite)로 나타났다. 본 연구지역의 주요 오염원은 폐석 손실에 의한 것으로 여겨지며 토양오염우려기준을 초과한 오염 필지는 총 10,297 m2로 산정되었다.

주요어 중금속 오염, 폐광산, 산성광산배수, 토양오염

Article

Original Article

Econ. Environ. Geol. 2020; 53(2): 133-145

Published online April 30, 2020 https://doi.org/10.9719/EEG.2020.53.2.133

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Distribution of Metallic Elements Contamination in River Deposits and Farmland in the Vicinity of an Abandoned Korean Mine

Hwan Lee1 and Yoonjin Lee2*

1SG Institute of Environment Science and Technology, Gunsan, Jeonbuk 54012, Korea
2Department of General Education, Konyang University, Daejeon 35365, Korea

Correspondence to:*leeyj@konyang.ac.kr

Received: September 23, 2019; Revised: March 6, 2020; Accepted: March 20, 2020

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided original work is properly cited.

Abstract

Soil in mine waste-rock fields, and at the pithead, sediments and farmlands around an abandoned mine in the Chungcheong Province of South Korea were investigated to assess the distribution of metallic elements and to understand the scope of the pollution. Reddening was observed from the mine up to a distance of 61 m. Losses of waste rock around the mine were assessed over a section of 1800 m3. Yellowish precipitates on the bottom of a stream were identified as ferrihydrite and goethite. For anions, a mean sulfate ion level over 773.6 mg/L was found during August in the river water samples. Mine drainage at the site was shown to have a pH of 4.9 and a sulfate concentration of 1557.8 mg/L during the August rainy season. A possible cause of the metallic element contamination in the mine is waste-rock loss, because mine waste-rock is located on the slope in this area. In conclusion, the total soil area to be treated, based on the amount that exceeded the recommended Korean soil pollution levels, was assessed to be 10,297 m2.

Keywords metallic element contamination, abandoned mine, acid mine drainage, soil contamination

폐광산 인근 농경지 및 하천 퇴적토의 중금속 오염 특성

이환1 · 이윤진2*

1SG 환경기술연구원 연구본부, 2건양대학교 휴머니티 칼리지

Received: September 23, 2019; Revised: March 6, 2020; Accepted: March 20, 2020

요 약

본 연구는 대한민국 충청도에 위치한 폐광산을 대상으로 오염경로를 분석하기 위해 갱구, 하천 퇴적토 및 인근 농경지의 중금속 오염 확산 특성을 조사하였다. 연구대상지역에서 갱내수 유출지점으로부터 약 61 m까지 적화현상이 관찰되었고 총 1800 m3의 폐석 유실구간이 확인하였다. 갱내수는 우기기간동안 pH 4.9, 황산염의 농도 1557.8 mg/L를 나타냈다. 동일한 기간에 황산염 농도는 하천시료에서 평균 773.6 mg/L으로 나타났다. 하천에서 채취한 황갈색 시료를 분석한결과 침철석과 페리하이드라이트(ferrihydrite)로 나타났다. 본 연구지역의 주요 오염원은 폐석 손실에 의한 것으로 여겨지며 토양오염우려기준을 초과한 오염 필지는 총 10,297 m2로 산정되었다.

주요어 중금속 오염, 폐광산, 산성광산배수, 토양오염

    KSEEG
    Jun 30, 2024 Vol.57 No.3, pp. 281~352

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