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연구보문 : 토양환경 ; 삼보광산 하류 수계의 계절별 수질변화와 오염도 평가
정구복 ( Goo Bok Jung ),이종식 ( Jong Sik Lee ),김원일 ( Won Il Kim ),류종수 ( Jong Su Ryu ),윤순강 ( Sun Gang Yun ) 한국환경농학회 2008 한국환경농학회지 Vol.27 No.4
폐금속 광산에서 유출되는 광산배수로 인한 수계의 수질오염 영향을 파악하기 위하여 삼보광산 광미댐 침출수 및 하류 하천수의 화학성분 및 미량금속을 분석 검토한 결과는 다음과 같다. 삼보광산 주변 광미댐 침출수의 pH 값은 5.8~6.9 사이로 중성에 가까운 약산성이였다. 주 광미댐 침출수의 주요 용존 화학성분 평균치는 EC 1.77 dS/m, SO4(2-) 929, K+ 14.6, Ca2+ 263.3, Mg2+ 46.9 mg/L 이였다. 특히 화학성분 중 EC 값과 SO4(2-) 농도는 벼의 농업용수 피해한계 농도(EC 1.0 dS/m, SO4(2-) 54.0 mg/L)를 상회하였다. 광산 침출수의 Cd 평균 농도(0.016~0.021 mg/L)는 농업용수 수질기준인 0.01 mg/L을 초과하였고, Cd 최고치는 수질기준의 4배 정도 높았다. 또한 미량금속 중 Zn, Fe 및 Mn 농도는 FAO의 관개용수 최대 권고치(Cd 0.01, Zn 2.0, Fe 5.0, Mn 0.2 mg/L)를 초과하였고, 특히 Zn 및 Mn 평균 농도는 권고치의 8~26배, 45~313배 이상 높았다. 본 조사결과에서 광산 배수에 의한 수계의 수질오염은 하류 1 km 이상까지 영향을 미치는 것으로 나타났다. 광산배수와 하천수의 수질항목 중 pH 값은 용존 Cd, Zn, Al 및 Mn 농도와 부의 상관을, 주 오염성분인 EC 값 SO4(2-) 및 Ca2+ 농도는 각각의 Cd, Zn, Al 및 Mn 농도와 고도의 정의 상관을 보였다. 또한 주요 화학성분 중에서는 pH 값이 EC 값 및 SO4(2-) 농도와 부의 상관을 보였다. Metal mining district drainage is a well recognized source of environmental contamination. Oxidation of metal sulfides produces acidic and metal-rich waters that contaminate local surface water and ground water in mines, mine dumps, and tailing impoundments. This monitoring study was carried out to investigate the stream water quality and pollution as affected by the Sambo mine drainage in relation to the relative distance from the mine. It obvious that pH values of the mine drainage ranged from 5.8 to 6.9, while the average concentrations of the dissolved chemical constituents for EC, SO4(2-), K+, Ca2+, and Mg2+ were 1.77 dS m-1, 929, 14.6, 263.3, and 46.9 mg/L in mine drainage discharged from the main waste rock dumps (WRD), respectively. Furthermore, EC values and sulfate concentrations exceeded the critical toxicity levels in agricultural water for rice plant (1.0 dS m-1 for EC and 54.0 mg/L for SO4(2-)). Also, the average of dissolved cadmium concentrations (0.016~0.021 mg/L) was higher than water quality standard (0.01 mg/L) for agricultural water in Korea, in addition to Zn, Fe and Mn were higher than trace metals maximum concentrations which recommended by FAO for irrigation water. The results indicate that mine drainage discharged from the Sambo mine affected stream water at least to distance of 1 km downstream of the mine water discharge point. EC values, SO4(2-) and Ca2+ concentrations in discharged water positively correlated with dissolved Cd, Zn, Al and Mn concentrations, while the pH values negatively correlated. In addition, EC values, SO4(2-) and Ca2+ concentrations were negatively correlated with pH values.
농촌 소유역에서의 비점오염물질 유출 특성 - 충남 공주시 정안면 고성리 지역을 대상으로 -
김진호 ( Kim Jin-ho ),한국헌 ( Han Kuk-heon ),류종수 ( Ryu Jong-su ),임혁진 ( Lim Hyuk-jin ),이경도 ( Lee Kyung-do ),권순국 ( Kwun Soon-kuk ) 한국농공학회 2005 한국농공학회 학술대회초록집 Vol.2005 No.-
This study was conducted to identify the characteristics of non-point pollutants discharge in a small Rural watershed. For this purpose, the typical rural area in Gongju city was selected as a research site. Water quality and water quantity data in the stream and the precipitation of the watershed were analyzed periodically from May 1 to August 31 in 2005. Also, pollutant loads were estimated using these data. As a result, the mean concentrations of BOD, TN and TP in the stream were 3.16, 3.20, 0.236 mg/L rainy season and 0.93, 2.75, 0.058 mg/L in normal survey season respectively. The estimation of non-point pollutants discharge loads were shown that BOD was 5,154.2kg, T-N was 9,164.7kg, T-P was 308.4kg, and SS was 117,163.2kg from July to August. That means above of 90% of non-point pollutants discharge was occurred in rainy season.