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Author |
Skousen, J.G.; Rose, A.; Geidel, G.; Foreman, J.; Evans, R.; Hellier, W. |
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Book Whole |
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Year |
1998 |
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Pages |
130 pp |
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Keywords |
acid mine drainage mine water remediation |
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Abstract |
An array of techniques have been developed during the last several decades to abate or control pollution by acid mine drainage (AMD) from coal and metal mines. Although most of these techniques are successful in eliminating or decreasing the deleterious effects of AMD in some situations, they are unsuccessful in others. Due to the inherent variability between mines and environmental conditions, no one abatement or treatment technique is effective on all sites, and selection of the best method on each site is difficult given the array of methods available. The techniques also vary in the type and size of problem they are capable of handling. Their individual costs, effectiveness, and maintenance are also important considerations. Therefore, accurate information is needed to understand the limitations of the various methods and their response to various site variables. Continued research is imperative for field testing of existing technologies, as well as continued development of new technologies. At present, there is no authoritative guide or manual to assist in evaluating the best technique for a given situation. In order to continue to mine coal and other minerals without harming the environment, the best science and techniques must be identified and implemented in order to minimize the production of AMD. To accomplish this goal, the Acid Mine Drainage Technology Initiative (ADTI) was organized to promote communication among scientists and engineers dealing with AMD, and to develop a consensus on the identification and optimum usage of each method. The intent is to provide information on selection of appropriate techniques for specific problems that will ultimately lead to a higher level of success in avoidance of AMD and remediation of existing sources, at a savings in cost and staff time, and with greater assurance that a planned technique will accomplish its objective. This effort will result in enhancement of mine drainage quality, improvement in stream cleanup and its cost effectiveness, and development of a mechanism for technology transfer. |
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The National Mine Land Reclamation Center |
Place of Publication |
Morgantown |
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Series Title |
Handbook of Technologies for Avoidance and Remediation of Acid Mine Drainage |
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Handbook of Technologies for Avoidance and Remediation of Acid Mine Drainage; 2; VORHANDEN | AMD ISI | Wolkersdorfer; FG als Datei vorhanden 3 Abb. |
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no |
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CBU @ c.wolke @ 17424 |
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243 |
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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. |
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Volume |
10 |
Issue |
2 |
Pages |
315-325 |
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Keywords |
mine water treatment acid mine drainage high density sludge lime neutralization mining environment passive treatment sulfate-reducing bacteria |
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Abstract |
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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no |
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Call Number |
CBU @ c.wolke @ 17477 |
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56 |
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Title |
'Green' company offers desalination technology |
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Journal Article |
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Year |
1998 |
Publication |
Water Sewage and Effluent |
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18 |
Issue |
4 |
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9-11 |
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Keywords |
Groundwater problems and environmental effects geomechanics abstracts: excavations (77 10 10) acid mine drainage environmental effect mine drainage |
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Water and wastewater treatment activities, projects and capabilities of South African environmental engineering specialist Envig are detailed. The company, as part of the Weir Wesgarth Consortium, has pre-qualified for the major Namibian Water Supply Project, one of the largest of its kind to date in southern Africa. This project involves the desalination of seawater to meet increasing water demand and shortfalls. Envig, if awarded the contract, would be involved in construction of three or four reverse osmosis or mechanical vapour compression sea water desalination plants and associated infrastructure. The company is also involved in a mine water desalination project at the Eskom Tutuka Power Station. A reverse osmosis plant using low fouling maintenance is being installed to deal with acid mine drainage water. Details of the design and operation of this plant are given. |
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0257-8700 |
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'Green' company offers desalination technology; 0432290; South-Africa; Geobase |
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no |
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Call Number |
CBU @ c.wolke @ 17548 |
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496 |
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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. |
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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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Notes |
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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Call Number |
CBU @ c.wolke @ 17598 |
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222 |
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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 |
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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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ISSN |
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 |
Serial |
294 |
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