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Removal of Dissolved Heavy Metals in Abandoned Mine Drainage by Ozone Oxidation System  

Seo, Suk Ho (School of Civil & Environmental Engineering Yonsei)
Ahn, Kwang Ho (School of Civil & Environmental Engineering Yonsei)
Lee, Jung Kyu (School of Civil & Environmental Engineering Yonsei)
Kim, Gun Jooung (School of Civil & Environmental Engineering Yonsei)
Chu, Kyoung Hoon (School of Civil & Environmental Engineering Yonsei)
Ra, Young Hyun (OXEN tech.)
Ko, Kwang Baik (School of Civil & Environmental Engineering Yonsei)
Publication Information
Journal of Korean Society on Water Environment / v.26, no.5, 2010 , pp. 725-731 More about this Journal
Abstract
This study was to evaluate the ozone oxidation of dissolved Fe, Mn, $SO{_4}^{2-}$ ions and color in abandoned mining drainage by conducting a bench-scale operation at various reaction times in an ozone reactor. The influent was collected from an abandoned mine drainage (AMD) near the J Mine in Jungsungun, Kangwon Province. The ozone reactor was operated at ozone reaction times of 10, 20 and 30 min with ozone doses of 0.0 and $2.4g\;O_3/hr$. Samples from each effluent from subsequent sand filtration were regularly collected and analyzed for pH, Fe, Mn, Al, Cr, Hg, $SO{_4}^{2-}$, alkalinity, color, ORP, TDS and EC. The effluent concentrations of Fe and Mn from the sand filter were less than 0.1 mg/L, which were below the concentrations on Korean drinking water quality standards (Fe, Mn < 0.30 mg/L). The influent $SO{_4}^{2-}$, concentrations were not noticeably changed during this ozone oxidation. Cr and Hg in the raw wastewater from the abandoned mining drainage were not detected in this study. The experimental result shows that the ozone oxidation of dissolved heavy metals and subsequent sand filtration of metal precipitates are desirable alternative for removing heavy metals in AMD.
Keywords
Abandoned mine drainage; Metal ions; Ozone oxidation; Sand filtration; Sulfate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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