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Author |
Macklin, M.G. |
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Title |
A geomorphological approach to the management of rivers contaminated by metal mining |
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Journal Article |
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2006 |
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Geomorphology |
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79 |
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3-4 |
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423-447 |
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mine water treatment |
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As the result of current and historical metal mining, river channels and floodplains in many parts of the world have become contaminated by metal-rich waste in concentrations that may pose a hazard to human livelihoods and sustainable development. Environmental and human health impacts commonly arise because of the prolonged residence time of heavy metals in river sediments and alluvial soils and their bioaccumulatory nature in plants and animals. This paper considers how an understanding of the processes of sediment-associated metal dispersion in rivers, and the space and timescales over which they operate, can be used in a practical way to help river basin managers more effectively control and remediate catchments affected by current and historical metal mining. A geomorphological approach to the management of rivers contaminated by metals is outlined and four emerging research themes are highlighted and critically reviewed. These are: (1) response and recovery of river systems following the failures of major tailings dams; (2) effects of flooding on river contamination and the sustainable use of floodplains; (3) new developments in isotopic fingerprinting, remote sensing and numerical modelling for identifying the sources of contaminant metals and for mapping the spatial distribution of contaminants in river channels and floodplains; and (4) current approaches to the remediation of river basins affected by mining, appraised in light of the European Union's Water Framework Directive (2000/60/EC). Future opportunities for geomorphologically-based assessments of mining-affected catchments are also identified. (c) 2006 Elsevier B.V. All rights reserved. |
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A geomorphological approach to the management of rivers contaminated by metal mining; Wos:000241084500014; Times Cited: 1; ISI Web of Science |
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CBU @ c.wolke @ 16934 |
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105 |
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Gobla, M.J. |
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A rapid response to cleanup – Gilt Edge Superfund Site, South Dakota |
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Journal Article |
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2002 |
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Tailings and Mine Waste '02 |
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421-425 |
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mine water treatment |
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The Gilt Edge gold mine is an acid drainage site that has been put on an accelerated closure schedule. The mine ceased activities in 1999 when Dakota Mining Corporation declared bankruptcy forcing the State of South Dakota to immediatly assume water treatment operations. Evaluation of conceptual closure plan options and cost estimates led the State of South Dakota to a decision to seek Federal assistance. The site has quickly moved into reclamation mode for the principal contamination source, the Ruby waste-rock dump. Designs and specifications for capping the Ruby waste-rock dump were prepared while Superfund listing was pursued. In October of 2000, mobilization of the first reclamation contractor began and by December the site was added to the National Priorities List. Capping the waste-rock dump will address a major acid drainage source. Water treatment requirements are expected to decline as conventional methods such as diverting clean water, backfilling, grading, capping, limestone neutralization, and revegetation are implemented. Acid seepage from underground workings, steep highwalls, and some pit backfills will remain. Major field trials of emerging technologies are nearing completion and some are showing promising results. Carbon reduction in a pit lake, and pyrite microencapsulation on simulated waste dumps, are showing initial success. Their application may minimize or eliminate the need for long-term active water treatment which has been a long sought goal for major acid rock drainage sites. |
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A rapid response to cleanup – Gilt Edge Superfund Site, South Dakota; Isip:000175560600055; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17038 |
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160 |
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Bauroth, M.; Hähne, R.; Wolf, J. |
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Erfahrungen bei der Dekontamination saurer Wässer des Uranbergbaus mittels Einbindung in Kraftwerksaschen. Decontamination of acit water from uranium mining by ash filtration method |
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1991 |
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Neue Bergbautechnik |
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12 |
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420-422 |
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Bergbau Uranerz Grubenentwaesserung Chemische-Abwasserreinigung Asche Calciumcarbonat Verrieselungsfeld Dekontamination |
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Kontaminierte Grubenwässer des Uranbergbaus in Sachsen und Thüringen weisen eine regional schwankende chemische Zusammensetzung auf (Härte: 50 bis 1500 (Grad) dH, Sulfat: 2 bis 30 g/l, Eisen: 0,5 bis 4 g/l, Uranium: 1 bis 20 mg/l). Eine erfolgreich praktizierte Technologie der Abwasserreinigung ist dessen Verrieselung auf Kraftwerksaschen, die auf dichtem Untergrund bzw. dort, wo eine Grundwasserkontamination auszuschließen ist, aufgehaldet werden. Ziel ist es, den Nutzungsgrad der Asche zur Sicherung des Gewässerschutzes zu erhöhen. Eine geeignete Technologie ist dabei auch die Mischung von Asche und Kalk. Da die berieselte Asche bei der Einwirkung von natürlichen Niederschlägen ihre Kontamination teilweise wieder freisetzt, werden an die Verwahrung sowie Deponiebeschaffenheit von Aschehalden besondere Anforderungen gestellt. So muß beispielsweise die Verdunstung erhöht (Bewuchs, Vegetation) sowie die Dränage der infiltrierte Wässer verzögert werden. |
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SDAG Wismut, Chemnitz, DE |
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Erfahrungen bei der Dekontamination saurer Wässer des Uranbergbaus mittels Einbindung in Kraftwerksaschen. Decontamination of acit water from uranium mining by ash filtration method; 2627, BERG , 01.01.92; Words: 342; U9201 0120 586; 3 Seiten, 3 Bilder, 2 Tabellen, 7 Quellen 3UX *Umweltbelastung, technik* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* 3BX *chemische Grundlagen* 3BW *Geowissenschaften, physik*; BERG, Copyright FIZ Technik e.V.; DE Deutsch |
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CBU @ c.wolke @ 17614 |
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463 |
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Younger, P.L.; Banwart, S.A. |
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2001 |
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419-421 |
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mine water |
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Preprints volume Conference 'Groundwater Quality 2001' (Third International Conference on Groundwater Quality, International Association of Hydrological Sciences) |
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Sheffield |
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Time-scale issues in the remediation of pervasively contaminated groundwaters at abandoned mines sites |
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Time-scale issues in the remediation of pervasively contaminated groundwaters at abandoned mines sites; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17629 |
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197 |
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Author |
Smith, I.J.H. |
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AMD treatment, it works but are we using the right equipment? |
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2000 |
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Tailings and mine waste ' |
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419-427 |
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Groundwater problems and environmental effects geomechanics abstracts: excavations (77 10 10) acid mine drainage conference proceedings methodology mine drainage remediation waste management |
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For the past 40 years various approaches have been developed to treat acid waters coming from abandoned as well as operating mining operations. System designs have evolved to meet increasingly stringent discharge permit limits for treated water, as well as to provide solid disposal within economic constraints. A treatment system for remediation of acid mine drainage (AMD) or acid groundwater (AG) requires two main steps: 1. The addition of chemicals to precipitate dissolved metals contained in the waters, and if necessary, to coagulate the precipitated solids ahead of physical separation. 2. Physical separation of the precipitated solids from the water so the water can be lawfully discharged from the site. Choosing the appropriate technology and equipment results in the most efficient plant design, the lowest capital outlay, and minimum operating cost. The goal of these plants is to discharge liquids and solids able to meet standards. The separation of solids from liquids can be achieved through various means, including gravity settling, flotation, mechanical dewatering, filtration and evaporation. As important as the liquid solids separation unit operations are, they are driven by the chemistry of the water to be treated. The content of the dissolved solids will influence the quality and quantity of the solids produced during precipitation. Thus the two aspects must be integrated, with chemistry first, then mechanical engineering. This presentation will provide an overview of a number of liquid solids separation tools currently being used to treat AMD-AG at several sites in the USA. It will also discuss how their operations are impacted by the chemistry of their particular acid water feeds. The tools used include clarifier-thickeners, solids contact clarifiers, dissolved air flotation, polishing filters, membrane filters, and mechanical dewatering devices (belt and filter presses, vacuum filters, and driers). |
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J.H. Smith III, SEPCO Incorporated, Fort Collins, CO, United States |
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Book; Conference-Paper; AMD treatment, it works but are we using the right equipment?; 2263351; Using Smart Source Parsing 00-Proceedings-of-the-7th-international-conference-Fort-Collins-January- 2000 Netherlands; Geobase |
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CBU @ c.wolke @ 17541 |
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237 |
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