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Author |
Gusek, J.J. |
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Title |
Passive-treatment of acid rock drainage: what is the potential bottom line? |
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Year |
1995 |
Publication |
Min. Eng. |
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47 |
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3 |
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250-253 |
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mining acid drainage passive treatment system 3 Geology |
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Passive-treatment systems that mitigate acid-rock drainage from coal mines have been operating since the mid-1980s. Large systems at metal mines are being contemplated. A typical man-made passive-treatment-system can mimic a natural wetland by employing the same geochemical principles. Passive-treatment systems, however, are engineered to optimize the biogeochemical processes occurring in a natural wetland ecosystem. The passive-treatment methodology holds promise over chemical neutralization because large volumes of sludge are not generated. Metals may be precipitated as oxides, sulfides or carbonates in the passive-treatment system substrate. The key goal of a passive-treatment system is the long-term immobilization of metals in the substrate materials. The passive-treatment technique may not be applicable in all mine-drainage situations. -from Author |
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Knight-Piesold & Co, 1050 17th St., Suite 500, Denver, CO, 80265- 0550, USA |
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Passive-treatment of acid rock drainage: what is the potential bottom line?; (1121863); 95k-12693; Using Smart Source Parsing pp; Geobase |
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CBU @ c.wolke @ 17638 |
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365 |
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Fawcett, M.N.R. |
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Management of AMD at Pine Creek Mine. Die Beherrschung des AMD-Problems in der Pine-Creek-Mine |
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Conference Article |
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1995 |
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Second Australian Acid Mine Drainage Workshop, Charters Towers, AU, 28 31 March 1995 |
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83-90 |
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Bergbau Sanierung Erzbergbau Gold Australien Havarie Schwefelsäure Tagebau Flutung Sauerstoffzufuhr Minimierung Projektmanagement Unternehmensführung Unternehmensplanung Gewässerschutz Projektplanung Prophylaxe Acid mine drainage Haldenverkippung Tagebaurestloch |
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In der Regenzeit 1991/1992 wurden überraschend im Bereich des australischen Goldbergwerks Pine Creek saure Grubenwässer festgestellt, die eine ernsthafte Umweltgefährdung und einen deutlichen Anstieg bei den Betriebskosten verursachten. Diese sauren Grubenwässer traten als Folge von Laugungserscheinungen in den Halden auf. Zur Verminderung der Reaktionsfähigkeit der sulfidischen Berge wurde beschlossen, die Halden mit mehreren Schichten inerten Materials geringer Permeabilität abzudecken. Diese Abdeckung wurde anschließend verdichtet und begrünt. Bei den späteren Abbauarbeiten wurde eine prophylaktische Minimierung der begünstigenden Reaktionsbedingungen vorgenommen. Es wurde eine Integration von Abbau und Sanierungsmaßnahmen realisiert, bei der offene Tagebauflächen mit Haldenbergen verfüllt wurden. Die haldengefüllten Tagebaurestlöcher wurden außerdem teilgeflutet, um den Sauerstoffzutritt zu minimieren. Aus den gewonnenen Erfahrungen wird die Schlußfolgerung gezogen, das AMD-Problem bereits in der Planungsphase zu berücksichtigen und umfassende Untersuchungen einzuleiten. Es sind nicht erst im Stadium der Sanierung, sondern bereits bei den Abbauaktivitäten geeignete Maßnahmen einzuleiten, um unangenehme Überraschungen durch saure Grubenwässer, die übrigens sehr teuer werden können, zu vermeiden. |
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Management of AMD at Pine Creek Mine. Die Beherrschung des AMD-Problems in der Pine-Creek-Mine; BERG, Copyright FIZ Technik e.V.; EN Englisch; 0-646-24771-9; U9609 0029 586; 11343, BERG , 07.09.96; Words: 436; 8 Seiten, 1 Bild, 4 Tabellen 3UXX *Belastung von Wasser, Wasserreinhaltung, Abwasser* 3PAB *Aufbereitung anorganischer, mineralischer Rohstoffe* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* |
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CBU @ c.wolke @ 17607 |
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383 |
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Evangelou, V.P. |
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Book Whole |
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1995 |
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293 pp |
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solution chemistry surface chemistry acid mine drainage (AMD) molecular oxidation mechanics microbial role, kinetics, control, ameliorates and limitations microencapsulation |
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Pyrite oxidation and its control: solution chemistry, surface chemistry, acid mine drainage (AMD), molecular oxidation mechanisms, microbial role, kinetics, control, ameliorates and limitations, microencapsulation |
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0-8493-4732-7 |
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Pyrite oxidation and its control: solution chemistry, surface chemistry, acid mine drainage (AMD), molecular oxidation mechanisms, microbial role, kinetics, control, ameliorates and limitations, microencapsulation; Boca Raton, Fla. : CRC Press, cop. 1995; Opac |
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CBU @ c.wolke @ 6935 |
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385 |
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Crawford, G.A. |
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Environmental Improvements by the Mining-industry in the Sudbury Basin of Canada |
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1995 |
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J. Geochem. Explor. |
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52 |
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1-2 |
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267-284 |
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mine water |
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Responsible mining companies have done much to redress the environmental damage of earlier technologies and continue to do more. In the Sudbury Basin, one of the most important mining areas in the world, both Inco Limited and Falconbridge Limited, two of the largest nickel producers, have significantly decreased sulphur dioxide emissions in the last 40 years from substantially 100% to about 10% or less of the sulphur in the ore; decreased water effluents by recycling; treated effluents to comply with government regulations; revegetated mine rock and surface tailings deposits and rehabilitated landscapes in the surrounding communities. Inco and Falconbridge continue to develop improved means for environmentally sound handling of all wastes including recycling and to reclaim land at abandoned mine sites. They have developed and implemented environmental policies and codes of practice, not only to comply with regulations, but to anticipate them. The mining industry recognizes the need for regulation to protect human health and the environment. Existing regulations are based on a hazard assessment approach. A more realistic, pragmatic and cost-effective basis for regulation is risk management. This relates any documented effects to measured exposures and recognizes the need for exposure levels low enough that incidence of adverse health effects is as low as in the surrounding ecosystem. |
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0375-6742 |
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Environmental Improvements by the Mining-industry in the Sudbury Basin of Canada; Isi:A1995qp96600025; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17631 |
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410 |
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Author |
Brown, A. |
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Title |
Geohydrology and adit plugging |
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Book Chapter |
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Year |
1995 |
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Special Publication – Colorado Geological Survey, Report: 38 |
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87-98 |
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acid mine drainage; Colorado; construction; discharge; geochemistry; ground water; hydrochemistry; hydrology; lithofacies; metals; methods; mines; monitoring; pH; pollutants; pollution; remediation; Rio Grande County Colorado; stream transport; Summitville Mine; tunnels; underground installations; United States; water table 22 Environmental geology; 21 Hydrogeology |
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Posey, H.H.; Pendleton, J.A.; Van Zyl, D.J.A. |
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Proceedings; Summitville forum '95 |
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188421651x |
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Geohydrology and adit plugging; GeoRef; English; 1995-052685; Summitville forum '95, Fort Collins, CO, United States, Jan. 17-20, 1995 References: 6; illus. incl. 3 tables, geol. sketch map |
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CBU @ c.wolke @ 6467 |
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434 |
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