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Author |
Hedin, R.S.; Nairn, R.W.; Kleinmann, R.L.P. |
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Title |
Passive Treatment of Coal Mine Drainage |
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Journal Article |
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Year |
1994 |
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Bureau of Mines Information Circular |
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Ic-9389 |
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1-35 |
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Keywords |
wetland Grubenwasser treatment Wasserreinigung Wasserbehandlung mine water |
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Abstract |
Passive methods of treating mine water utilize chemical and biological processes that decrease metal concentrations and neutralize acidity. Compared to conventional chemical treatment, passive methods generally require more land area, but utilize less costly reagents and require less operational attention and maintenance. Currently, three types of passive technologies exist: aerobic wetlands, wetlands that contain an organic substrate, and anoxic limestone drains. Aerobic wetlands promote mixed oxidation and hydrolysis reactions, and are most effective when the raw mine water is net alkaline. Organic substrate wetlands promote anaerobic bacterial activity that results in the precipitation of metal sulfides and the generation of bicarbonate alkalinity. Anoxic limestone drains generate bicarbonate alkalinity and can be useful for the pretreatment of mine water before it flows into a wetland. Rates of metal and acidity removal for passive systems have been developed empirically. Aerobic wetlands remove Fe and Mn from alkaline water at rates of 10-20 g×m-2×d-1 and 0.5-1.0 g×m-2×d-1, respectively. |
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0096-1914 |
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Passive Treatment of Coal Mine Drainage; 1; abgegeben an TUFG 100700 / € 0 13 Abb., 19 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17474 |
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355 |
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Author |
Eger, P. |
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Title |
Wetland Treatment for Trace-metal Removal from Mine Drainage – the Importance of Aerobic and Anaerobic Processes |
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Journal Article |
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Year |
1994 |
Publication |
Water Sci. Technol. |
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29 |
Issue |
4 |
Pages |
249-256 |
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copper cobalt nickel zinc ion exchange sulfate reduction adsorption acid mine drainage passive treatment |
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Abstract |
When designing wetland treatment systems for trace metal removal, both aerobic and anaerobic processes can be incorporated into the final design. Aerobic processes such as adsorption and ion exchange can successfully treat neutral drainage in overlandflow systems. Acid drainage can be treated in anaerobic systems as a result of sulfate reduction processes which neutralize pH and precipitate metals.Test work on both aerobic and anaerobic systems has been conducted in Minnesota. For the past three years, overland flow test systems have successfully removed copper, cobalt, nickel and zinc from neutral mine drainage. Nickel, which is the major contaminant, has been reduced around 90 percent from 2 mg/L to 0.2 mg/L. A sulfate reduction system has successfully treated acid mine drainage for two years, increasing pH from 5 to over 7 and reducing concentrations of all metals by over 90 percent.Important factors to consider when designing wetlands to remove trace metals include not only the type of wetlandrequired but also the size of the system and the residence time needed to achieve the water quality standards. |
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0273-1223 |
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Wetland Treatment for Trace-metal Removal from Mine Drainage – the Importance of Aerobic and Anaerobic Processes; Isi:A1994nv30000032; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17336 |
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394 |
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Bochkarev, G.R.; Beloborodov, A.V.; Kondrat'ev, S.A.; Pushkareva, G.I. |
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Title |
Intensification of Aeration in treating Natural-Water and Mine Water |
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Journal Article |
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1994 |
Publication |
J. Min. Sci. |
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30 |
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6 |
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5 |
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mine water treatment |
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1062-7391 |
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Nov; Intensification of Aeration in treating Natural-Water and Mine Water; New York: Consultants Bureau; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7033.pdf; Opac |
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CBU @ c.wolke @ 7033 |
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15 |
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Author |
Peterson, D.E.; Kindley, M.J. |
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Title |
The Golden Cross Mine water management system |
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Journal Article |
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Year |
1994 |
Publication |
New Zealand Mining |
Abbreviated Journal |
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14 |
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15-21 |
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Keywords |
Australasia Coromandel Peninsula cyanides gold ores Golden Cross Mine metal ores mines New Zealand North Island tailings Waihi New Zealand waste water water management water treatment 30, Engineering geology |
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Abstract |
Because of its location in the sensitive Coromandel Peninsula, strict water management and environmental requirements had to be met on the Golden Cross Mine Project. This led to the development of new technologies for cyanide recovery and the adoption of advanced water management and water treatment systems. This paper discusses the water management and treatment system adopted for contaminated water at Golden Cross. While permit discharge levels must be and are met for mine discharge waters, the ultimate success of the water management system is demonstrated by the results downstream; biological surveys show no changes to the resident aquatic life in the river. |
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1170-4209 |
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The Golden Cross Mine water management system; 1998-055867; New Zealand (NZL); GeoRef; English |
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CBU @ c.wolke @ 16732 |
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271 |
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