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Author |
Morfitt, B.; Brewer, W.; Frobel, R. |
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Title |
Cleaning up the Summitville Mine Superfund Site |
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Journal Article |
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Year |
1998 |
Publication |
Geotechnical Fabrics Report |
Abbreviated Journal |
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Volume |
16 |
Issue |
5 |
Pages |
38-41 |
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Keywords |
Geomembran Verbundstoff Abdichten Erdaufschüttung Erosion Schutz Bentonit Bergwerk Netz |
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Abstract |
A multi-layered geosynthetic system that includes geosynthetic-clay liners (GCL) and a geonet-composite drain (GNGC) is being used to cap and stabilize a 178000 m(exp 2) heap-leach pad at the Summitville Mine Superfund Site in Colorado. Selected were materials on the basis of design requirements for permeability, strength, extreme site conditions and cost. The Summitville cleanup called for a heap-leach pad cap to provide a barrier that would prevent precipitation from infiltrating the pad material. This long-term remediation prevents the pile from becoming saturated and allowing water to overflow the downslope dike, which could cause instability to dike and pond. Three geosynthetic alternatives were proposed. The contractor, that was awarded the heap leach pad, phase 2 contract, decided for a geosynthetic clay liner cap placed directly on the redesigned slopes. Bentofix NW-8 was used as GCL and TexNet TN was selected as the geocomposite drain. Conformance testing, subgrade preparation review, geosynthetic installation/repair inspection and review of cover material placement, performed by independent construction-quality assurance, showed that GCL is a well-suited cap material for heap leach pads, where high wind, cold temperatures rain and high altitude hinder construction. The robust geosynthetic allowed on-site coarse material to be used in the subgrade and cover layer, which saved the cost of importing more expensive bedding material. |
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US Bureau of Reclamation, Denver, US; Advanced Terra Testing, Lakewood, US; R K Frobel & Associates, Lakewood, US |
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0882-4983 |
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Cleaning up the Summitville Mine Superfund Site; 16974, BERG , 16.09.98; Words: 376; T9808 0249 178; 4 Seiten, 4 Bilder, 1 Tabelle 3TMP *intelligente Textilien, technische Textilien*; BERG, Copyright FIZ Technik e.V.; EN Englisch |
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CBU @ c.wolke @ 17599 |
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294 |
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Author |
Vegt, A.L. de; Bayer, H.G.; Buisman, C.J. |
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Title |
Biological sulfate removal and metal recovery from mine waters |
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Journal Article |
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Year |
1998 |
Publication |
Min. Eng. |
Abbreviated Journal |
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Volume |
50 |
Issue |
11 |
Pages |
67-70 |
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Keywords |
Bergbau Erzbergbau Verfahrenstechnik Biotechnologie Wasseraufbereitung Abwasserreinigung Schwermetalle Schwefelwasserstoff Sulfat Sulfid biologisches Verfahren Schwermetallabtrennung Grubenwasser |
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Metalle und Sulfat können aus Grubenwässern in einem zweistufigen biologischen Prozeß entfernt werden. In der ersten Stufe wird das Sulfat durch Bakterien zu Schwefelwasserstoff reduziert. Dieser reagiert mit den gelösten Metallen zu unlöslichem Metallsulfid. Im zweiten Schritt wird überschüssiger Schwefelwasserstoff durch Bakterien zu elementarem Schwefel oxidiert. Eine nach diesem Verfahren arbeitende Anlage wurde 1992 durch die Budelco Zinc Refinery in den Niederlanden installiert. Diese verarbeitet täglich 5000 m(exp 3) Gundwasser. Zur Weiterentwicklung des Verfahrens für die Entfernung von Metallen und Sulfat aus Grundwasser und zur gezielten Kupfergewinnung aus Laugungswässern wurde 1995 in der Kupfergrube Bingham Canyon Utah, USA eine entsprechende Pilotanlage in Betrieb genommen. Anhand dieser Pilotanlage werden der Verfahrensablauf und erste Erfahrungen dargestellt sowie ein Überblick über das Untersuchungsprogramm gegeben. |
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Paques Exton, US; Kennecott Utah Copper, Bingham Canyon, US; Paques Bio Systems, Balk, NL |
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0026-5187 |
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Biological sulfate removal and metal recovery from mine waters; 17880, BERG , 17.02.99; Words: 318; U9902 0058 586; 4 Seiten, 4 Bilder, 3 Tabellen, 4 Quellen 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* 3UX *Umweltbelastung, technik*; BERG, Copyright FIZ Technik e.V.; EN Englisch |
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CBU @ c.wolke @ 17598 |
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222 |
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Author |
Anonymous |
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Book Whole |
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Year |
1998 |
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118 pp |
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abandoned mines; acid mine drainage; aquifer vulnerability; aquifers; arsenic; bibliography; bioremediation; chemical properties; chemical waste; chromium; constructed wetlands; decontamination; disposal barriers; ground water; grouting; industrial waste; metals; microorganisms; mines; mobility; phytoremediation; pollutants; pollution; programs; reclamation; remediation; sludge; soil treatment; soils; solvents; sorption; Superfund; surface water; tailings; toxic materials; waste disposal; waste disposal sites; water quality; wetlands 22, Environmental geology |
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Society for Mining, Metallurgy, and Exploration |
Place of Publication |
Littleton |
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Remediation of historical mine sites; technical summaries and bibliography |
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0873351622 |
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Remediation of historical mine sites; technical summaries and bibliography; 1998-031431; GeoRef; English |
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CBU @ c.wolke @ 6164 |
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11 |
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Author |
Fyson, A.; Nixdorf, B.; Steinberg, C.E.W. |
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Manipulation of the sediment-water interface of extremely acidic mining lakes with potatoes; laboratory studies with intact sediment cores Geochemical and microbial processes in sediments and at the sediment-water interface of acidic mining lakes |
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Book Chapter |
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1998 |
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Water, Air and Soil Pollution |
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353-363 |
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acid mine drainage; acidification; ammonium ion; Brandenburg Germany; Central Europe; concentration; dissolved materials; ecology; Europe; eutrophication; ferric iron; Germany; iron; lacustrine environment; Lusatia; mass balance; metals; nitrate ion; pollutants; pollution; pore water; remediation; sediment-water interface; sediments; surface water; titration; transport 22, Environmental geology |
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108 |
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Peiffer, S. |
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Manipulation of the sediment-water interface of extremely acidic mining lakes with potatoes; laboratory studies with intact sediment cores Geochemical and microbial processes in sediments and at the sediment-water interface of acidic mining lakes; GeoRef; English; 1999-021233; Conference on Geochemical and microbial processes in sediments and at the sediment-water interface of acidic mining lakes, Bayreuth, Federal Republic of Germany, Feb. 1997 References: 17; illus. |
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CBU @ c.wolke @ 6102 |
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21 |
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Author |
Kuyucak, N. |
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Title |
Mining, the Environment and the Treatment of Mine Effluents |
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Journal Article |
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Year |
1998 |
Publication |
Int. J. Environ. Pollut. |
Abbreviated Journal |
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10 |
Issue |
2 |
Pages |
315-325 |
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mine water treatment acid mine drainage high density sludge lime neutralization mining environment passive treatment sulfate-reducing bacteria |
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The environmental impact of mining on the ecosystem, including land, water and air, has become an unavoidable reality. Guidelines and regulations have been promulgated to protect the environment throughout mining activities from start-up to site decommissioning. In particular, the occurrence of acid mine drainage (AMD), due to oxidation of sulfide mineral wastes, has become the major area of concern to many mining industries during operations and after site decommissioning. AMD is characterized by high acidity and a high concentration of sulfates and dissolved metals. If it cannot be prevented or controlled, it must be treated to eliminate acidity, and reduce heavy metals and suspended solids before release to the environment. This paper discusses conventional and new methods used for the treatment of mine effluents, in particular the treatment of AMD. |
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0957-4352 |
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Mining, the Environment and the Treatment of Mine Effluents; Isi:000078420600009; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17477 |
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56 |
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