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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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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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Ziemkiewicz, P.F.; Skousen, J.G.; Skousen, J.G.; Ziemkiewicz, P.F. |
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Title |
Prevention of acid mine drainage by alkaline addition |
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Book Chapter |
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Year |
1996 |
Publication |
Acid mine drainage control and treatment |
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acid mine drainage; acidification; alkalinity; Appalachians; coal; land use; leachate; leaching; mines; mitigation; North America; oxidation; pollution; preventive measures; pyrite; reclamation; sampling; sedimentary rocks; soils; spoils; sulfides; surface water; techniques; United States; water pollution; water quality; water treatment; weathered materials; West Virginia 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
Place of Publication |
Morgantown |
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Prevention of acid mine drainage by alkaline addition; GeoRef; English; 2004-051146; Edition: 2 References: 18; illus. incl. 2 tables |
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CBU @ c.wolke @ 6356 |
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185 |
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Ziemkiewicz, P.F.; Skousen, J.G.; Skousen, J.G.; Ziemkiewicz, P.F. |
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Title |
Overview of acid mine drainage at-source control strategies |
Type |
Book Chapter |
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Year |
1996 |
Publication |
Acid mine drainage control and treatment |
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acid mine drainage; acidification; alkalinity; backfill; coal mines; disposal barriers; geochemistry; ground water; hydrochemistry; hydrology; leaching; legislation; mines; mitigation; Pennsylvania; pollution; prediction; reclamation; remediation; simulation; SMCRA; soils; Surface Mine Control and Reclamation Act; surface water; topsoil; toxicity; United States; waste disposal; waste rock; water quality; weathering 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
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Morgantown |
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Overview of acid mine drainage at-source control strategies; GeoRef; English; 2004-051145; Edition: 2 References: 44 |
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CBU @ c.wolke @ 6355 |
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186 |
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Ziemkiewicz, P.F.; Skousen, J.G.; Lovett, R.; Skousen, J.G.; Ziemkiewicz, P.F. |
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Title |
Open limestone channels for treating acid mine drainage; a new look at an old idea |
Type |
Book Chapter |
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Year |
1996 |
Publication |
Acid mine drainage control and treatment |
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acid mine drainage; acidic composition; acidification; Appalachians; carbonate rocks; chemical reactions; concentration; constructed wetlands; ground water; limestone; North America; Pennsylvania; pollution; sedimentary rocks; surface water; United States; water quality; water treatment; West Virginia; western Pennsylvania; wetlands 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
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Morgantown |
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Open limestone channels for treating acid mine drainage; a new look at an old idea; GeoRef; English; 2004-051154; Edition: 2 References: 5; illus. incl. 5 tables |
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CBU @ c.wolke @ 6364 |
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188 |
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Ziemkiewicz, P.F.; Skousen, J.G.; Brant, D.L.; Sterner, P.L.; Lovett, R.J.; Skousen, J.G.; Ziemkiewicz, P.F. |
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Acid mine drainage treatment with armored limestone in open limestone channels |
Type |
Book Chapter |
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Year |
1996 |
Publication |
Acid mine drainage control and treatment |
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abandoned mines; acid mine drainage; acidification; carbonate rocks; case studies; chemical reactions; coal mines; controls; decontamination; effluents; environmental management; experimental studies; ground water; heavy metals; hydrology; limestone; mines; Pennsylvania; pollution; reclamation; sedimentary rocks; soils; surface water; United States; water treatment; watersheds; West Virginia 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
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Morgantown |
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Acid mine drainage treatment with armored limestone in open limestone channels; GeoRef; English; 2004-051155; Edition: 2 References: 14; illus. incl. 6 tables |
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CBU @ c.wolke @ 6365 |
Serial |
189 |
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