NDLI: The Distribution of Antimony and Arsenic in Waters of the Dúbrava Abandoned Mine Site, Slovak Republic

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The Distribution of Antimony and Arsenic in Waters of the Dúbrava Abandoned Mine Site, Slovak Republic

Content Provider	Springer Nature Link
Author	Ondrejková, Ivana Ženišová, Zlatica Fľaková, Renáta Krčmář, Dávid Sracek, Ondra
Copyright Year	2013
Abstract	The abandoned Dúbrava Mine, situated in the northern part of the Nízke Tatry Mts in the middle of Slovakia, was the most significant producer of antimony (Sb) in the former Czechoslovakia. Mine drainage from adits (containing up to 9,300 μg/L of Sb), mine waste dumps, and the leachate from mine tailings contribute Sb and arsenic (As) into nearby Paludžanka Creek and groundwater. Some drinking water resources have been closed due to excessive Sb concentrations; the concentration of Sb in one household well (126 μg/L) far exceeds the Sb drinking water limit of 5 μg/L. Although Sb is attenuated by dilution and adsorption on ferric iron in stream sediment in the Paludžanka Creek, Sb concentrations increase downstream of the mine tailings and then remain almost constant, leading to concentrations of 128 μg/L at the northern boundary of the study area. The dissolved As concentrations in the mine drainage are much lower than Sb, ranging from 4 to 62 μg/L. Flow and transport modeling confirmed the observed contamination pattern and the major role of the mine adits. Results of this study indicate serious Sb contamination, which could be mitigated by treatment of the adit discharges.Das stillgelegte Dúbrava Bergwerk, im nördlichen Teil der Niederen Tatra in der Mitte der Slowakischen Republik gelegen, war der wichtigste Produzent von Antimon (Sb) in der ehemaligen Tscheschoslowakei. Grubenwasser aus Stollen (bis zu 9,300 μg/L Sb), Abraum und Auswaschungen aus Tailings liefern Sb und Arsen (As) in den nahen Paludžanka Bach und das Grundwasser. Einige Trinkwassergewinnungsanlagen wurden stillgelegt, weil die Sb-Konzentrationen zu hoch wurden. In einem Hausbrunnen überstieg die Sb-Konzentration mit 126 μg/L bei weitem den Trinkwassergrenzwert von 5 μg/L. Obwohl Sb durch Verdünnung und Adsorption an dreiwertigem Eisen in den Sedimenten des Paludžanka Baches zurückgehalten wird, steigt die Sb-Kontzentration unterhalb der Tailings und bleibt dann nahezu konstant. Das führt zu Konzentrationen von 128 μg/L am Nordrand des Untersuchungsgebietes. Die Konzentrationen an gelöstem As im Grubenwasser sind viel kleiner als die an Sb, 4–62 μg/L. Strömungs- und Transportmodellierungen bestätigten die angetroffenen Verteilungsmuster und die entscheidende Rolle der Stollen. Die Studie zeigt erhebliche Kontaminationen mit Sb, die durch die Behandlung der Stollenwässer verhindert werden könnten.La mina abandonada Dúbrava, situada en la parte norte de Nízke Tatry Mts en la mitad de Eslovaquia, fue la más significativa productora de antimonio (Sb) en la antigua Checoslovaquia. Drenajes de minas desde hoyos (contaniendo hasta 9.300 μg/L de Sb), botaderos de residues mineros y los lixiviados desde escombreras diseminan Sb y arsénico (As) en la cercana Paludžanka Creek y en agua subterráneas. Algunas fuentes de agua para bebida han sido cerradas debido a las concentraciones excesivas de Sb; la concentración de Sb en una zona residencial (126 μg/L) excede largamente el límite de 5 μg/L para el agua de bebida. Aunque Sb se atenúa por dilución y adsorción sobre hierro férrico en los sedimentos de Paludžanka Creek, las concentraciones de Sb se incrementan corriente abajo de las escombreras mineras y luego permanece prácticamente constante, alcanzando concentraciones de 128 μg/L en la frontera norte del área de estudio. Las concentraciones de As disuelto en el drenaje de minas son mucho menores que las de Sb, entre 4 a 62 μg/L. Los modelos de flujo y transporte confirman el patrón de contaminación observado y el rol predominante de los hoyos de la mina. Los resultados de este estudio indican seria contaminación por Sb, que podría ser mitigada tratando las descargas desde los hoyos de la mina.废弃矿井Dúbrava位于斯洛伐克中部城市Nizker Tatry北部,是前捷克斯洛伐克最重要的锑生产矿井。矿井排放废水(含锑9,300 μg/L)、矸石堆及尾矿沥出物是矿井附近Palud?anka河及地下水中锑、砷污染源。由于锑浓度超标,一些饮用水源地已经被迫关闭。某民用水井地下水的锑浓度(126 μg/L)也已经远远超过饮用水标准(5 μg/L)。虽然稀释作用和Palud?anka河底氧化铁类沉积物的吸附作用可使水中锑自然钝化,但是锑浓度在尾矿下游仍持续增大,之后保持稳定,最终使研究区北部边界水的锑浓度达128 μg/L。矿井排放废水的可溶砷离子浓度(4–60 μg/L)远低于锑。水流与溶质运移模拟证明实了研究区锑、砷污染特征和矿井排放废水的主要污染源作用。研究结果表明,矿井排放废水处理是减轻研究区严重锑污染的关键。
Starting Page	207
Ending Page	221
Page Count	15
File Format	PDF
ISSN	10259112
Journal	Mine Water and the Environment
Volume Number	32
Issue Number	3
e-ISSN	16161068
Language	Chinese
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-04-20
Publisher Institution	International Mine Water Association (IMWA)
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Adits Dúbrava deposit Water contamination Geology Hydrogeology Sedimentology Energy Economics Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Geotechnical Engineering and Engineering Geology

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