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Author |
Zinck, J.M.; Aube, B.C. |
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Title |
Optimization of lime treatment processes |
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Journal Article |
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Year |
2000 |
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CIM Bull. |
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Volume |
93 |
Issue |
1043 |
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98-105 |
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Pollution and waste management non radioactive Groundwater problems and environmental effects geological abstracts: environmental geology (72 14 2) geomechanics abstracts: excavations (77 10 10) acid mine drainage buffering lime Canada |
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Abstract |
Lime neutralization technology is widely used in Canada for the treatment of acid mine drainage and other acidic effluents. In many locations, improvements to the lime neutralization process are necessary to achieve a maximum level of sludge densification and stability. Conventional lime neutralization technology effectively removes dissolved metals to below regulated limits. However, the metal hydroxide and gypsum sludge generated is voluminous and often contains less than 5% solids. Despite recent improvements in the lime neutralization technology, each year, more than 6 700 000 m3 of sludge are generated by treatment facilities operated by the Canadian mining industry. Because lime neutralization is still seen as the best available approach for some sites, sludge production and stability are expected to remain as issues in the near future. Several treatment parameters significantly impact operating costs, effluent quality, sludge production and the geochemical stability of the sludge. Studies conducted both at CANMET and NTC have shown that through minor modifications to the treatment process, plant operators can experience a reduction in operating costs, volume of sludge generated, metal release to the environment and liability. This paper discusses how modifications in plant operation and design can reduce treatment costs and liability associated with lime treatment. |
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J.M. Zinck, CANMET, Mining and Mineral Sciences Lab., Natural Resources Canada, Ottawa, Ont., Canada |
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0317-0926 |
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Optimization of lime treatment processes; 2291672; Canada 17; Geobase |
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CBU @ c.wolke @ 17537 |
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183 |
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Banks, D.; Younger, P.L.; Arnesen, R.-T.; Iversen, E.R.; Banks, S.B. |
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Title |
Mine-water chemistry: The good, the bad and the ugly |
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Journal Article |
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Year |
1997 |
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Environ. Geol. |
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32 |
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3 |
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157-174 |
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mine water treatment mine-water chemistry acid mine drainage mine-water pollution mine-water treatment county-durham drainage movements Pollution and waste management non radioactive Groundwater problems and environmental effects mine drainage contamination hydrogeochemistry mine water drainage acid mine drainage |
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Abstract |
Contaminative mine drainage waters have become one of the major hydrogeological and geochemical problems arising from mankind's intrusion into the geosphere. Mine drainage waters in Scandinavia and the United Kingdom are of three main types: (1) saline formation waters; (2) acidic, heavy-metal-containing, sulphate waters derived from pyrite oxidation, and (3) alkaline, hydrogen-sulphide-containing, heavy-metal-poor waters resulting from buffering reactions and/or sulphate reduction. Mine waters are not merely to be perceived as problems, they can be regarded as industrial or drinking water sources and have been used for sewage treatment, tanning and industrial metals extraction. Mine-water problems may be addressed by isolating the contaminant source, by suppressing the reactions releasing contaminants, or by active or passive water treatment. Innovative treatment techniques such as galvanic suppression, application of bactericides, neutralising or reducing agents (pulverised fly ash-based grouts, cattle manure, whey, brewers' yeast) require further research. |
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D. Banks, Norges Geologiske Undersokelse, Postboks 3006 – Lade, N-7002 Trondheim, Norway |
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0943-0105 |
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Oct.; Mine-water chemistry: The good, the bad and the ugly; 0337169; Germany 78; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/10620.pdf; Geobase |
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CBU @ c.wolke @ 10620 |
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18 |
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Brown, M.; Barley, B.; Wood, H. |
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2002 |
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acid mine drainage acidic composition bioremediation case studies chemical composition chemical reactions coal mines concentration constructed wetlands discharge England Europe Great Britain ground water international cooperation ion exchange kinetics legislation mines mining open-pit mining physicochemical properties policy pollution regulations remediation Scotland sulfate ion surface mining surface water tailings techniques technology underground mining United Kingdom Wales waste disposal waste management waste rock water pollution water resources water treatment weathering Western Europe wetlands 22, Environmental geology |
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IWA Publishing |
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London |
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Minewater treatment; technology, application and policy |
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1843390043 |
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Minewater treatment; technology, application and policy; 2006-084782; GeoRef; English; Includes appendices References: 416; illus. |
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CBU @ c.wolke @ 16503 |
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433 |
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Author |
Younger, P.L.; Banwart, S.A.; Hedin, R.S. |
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2002 |
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acid mine drainage acidification active treatment aquifer vulnerability aquifers bioremediation chemical composition critical load decision-making discharge engineering properties geomembranes ground water impact statements karst hydrology microorganisms mine dewatering mines natural attenuation pollution regulations remediation risk assessment sedimentation sludge solute transport surface water tailings tailings ponds waste management water management water pollution water quality weathering wetlands 22, Environmental geology |
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Kluwer Academic Publishers |
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Dordrecht |
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Alloway, B.J.; Trevors, J.T. |
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Mine water; hydrology, pollution, remediation |
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140200138x; 1202001371 |
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Mine water; hydrology, pollution, remediation; 2003-030514; GeoRef; English; Includes appendix References: 516; illus. |
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CBU @ c.wolke @ 16504 |
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196 |
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Author |
Wolkersdorfer, C. |
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Title |
Mine water tracing |
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Journal Article |
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Year |
2002 |
Publication |
Geological Society Special Publication |
Abbreviated Journal |
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Volume |
- |
Issue |
198 |
Pages |
47-60 |
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Keywords |
Groundwater problems and environmental effects Pollution and waste management non radioactive geomechanics abstracts: excavations (77 10 10) geological abstracts: environmental geology (72 14 2) flooding seepage abandoned mine tracer groundwater flow |
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Abstract |
This paper describes how tracer tests can be used in flooded underground mines to evaluate the hydrodynamic conditions or reliability of dams. Mine water tracer tests are conducted in order to evaluate the flow paths of seepage water, connections from the surface to the mine, and to support remediation plans for abandoned and flooded underground mines. There are only a few descriptions of successful tracer tests in the literature, and experience with mine water tracing is limited. Potential tracers are restricted due to the complicated chemical composition or low pH mine waters. A new injection and sampling method ('LydiA'-technique) overcomes some of the problems in mine water tracing. A successful tracer test from the Harz Mountains in Germany with Lycopodium clavatum, microspheres and sodium chloride is described, and the results of 29 mine water tracer tests indicate mean flow velocities of between 0.3 and 1.7 m min-1. |
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C. Wolkersdorfer, TU Bergakademie Freiberg, Lehrstuhl fur Hydrogeologie, Gustav-Zeuner-Strasse 12, Freiberg, Sachsen D-09599, Germany c.wolke@tu-freiberg.de |
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0305-8719 |
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Mine water tracing; 2463597; United-Kingdom 71; Geobase |
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CBU @ c.wolke @ 17528 |
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83 |
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