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Aube, B.C.; Zinck, J.M. |
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Title |
Comparison of AMD treatment processes and their impact on sludge characteristics |
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1999 |
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acid mine drainage cost decontamination density discharge geochemistry hydrochemistry leaching lime metals mine dewatering neutralization pH pollution remediation sludge stability tailings toxicity viscosity waste disposal water treatment 22, Environmental geology |
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Abstract |
Lime neutralisation for the treatment of acid mine drainage is one of the oldest water pollution control techniques practised by the mineral industry. Several advances have been made in the process in the last thirty years, particularly with respect to discharge concentrations and sludge density. However, the impact of different treatment processes on metal leachability and sludge handling properties has not been investigated. A study of treatment sludges sampled from various water treatment plants has shown that substantial differences can be related to the treatment process and raw water composition. This study suggests that sludge densities, excess alkalinity, long-term compaction properties, metal leachability, crystallinity and cost efficiency can be affected by the neutralisation process and specific process parameters. The study also showed that the sludge density and dewatering ability is not positively correlated with particle size as previously suggested in numerous studies. The treatment process comparisons include sludge samples from basic lime treatment, the conventional High Density Sludge (HDS) Process, and the Geco HDS Process. |
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Sudbury |
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Mining and the Environment II |
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2002-060865; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 10; illus. incl. 6 tables; GeoRef; English |
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CBU @ c.wolke @ 16574 |
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473 |
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Younger, P.L.; Cornford, C. |
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Title |
Mine water pollution from Kernow to Kwazulu-Natal; geochemical remedial options and their selection in practice |
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2002 |
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Africa Bolivia case studies Cornwall England cost decision-making decontamination Durham England England Europe geochemistry Great Britain Hlobane Colliery hydrology Kernow England KwaZulu-Natal South Africa metals Milluni Mine mine drainage monitoring pollutants pollution Quaking Houses England remediation South Africa South America South Crofty Mine South-West England Southern Africa United Kingdom water treatment Western Europe Wheal Jane Mine 22, Environmental geology |
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Pollution by mine drainage is a major problem in many parts of the world. The most frequent contaminants are Fe, Mn, Al and SO (sub 4) with locally important contributions by other metals/metalloids including (in order of decreasing frequency) Zn, Cu, As, Ni, Cd and Pb. Remedial options for such polluted drainage include monitored natural attenuation, physical intervention to minimise pollutant release, and active and passive water treatment technologies. Based on the assessment of the key hydrological and geochemical attributes of mine water discharges, a rational decision-making framework has now been developed for deciding which (or which combinations) of these options to implement in a specific case. Five case studies illustrate the application of this decision-making process in practice: Wheal Jane and South Crofty (Cornwall), Quaking Houses (Co Durham), Hlobane Colliery (South Africa) and Milluni Tin Mine (Bolivia). In many cases, particularly where the socio-environmental stakes are particularly high, the economic, political and ecological issues will prove even more challenging than the technical difficulties involved in implementing remedial interventions which will be robust in the long term. Hence truly “holistic” mine water remediation is a multi-dimensional business, involving teamwork by a range of geoscientific, hydroecological and socio-economic specialists. |
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Proceedings of the Ussher Society, vol.10, Part 3 |
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40th annual meeting of the Ussher Society |
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2004-019557; 40th annual meeting of the Ussher Society, Saint Austell, United Kingdom, Jan. 3-4, 2002 Scott Simpson lecture References: 39; illus. incl. 3 tables; GeoRef; English |
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CBU @ c.wolke @ 16506 |
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194 |
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McConchie, D.M.; Clark, M.; Hanahan, C.; Baun, R. |
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Title |
New treatments for the old problems of acid mine drainage and sulphidic mine tailings storage |
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Journal Article |
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2000 |
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acid mine drainage; ash; carbonate rocks; clastic sediments; construction materials; crushed stone; hydroxides; iron hydroxides; iron oxides; mines; mud; oxides; pH; pollution; reclamation; red mud; remediation; sea water; sedimentary rocks; sediments; storage; sulfides; tailings; waste management 22, Environmental geology |
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Programme & Abstracts - International Symposium on Environmental Geochemistry (ISEG), vol.5 |
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5th international symposium on Environmental geochemistry; conference abstracts and scientific programme |
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2006-033067; 5th international symposium on Environmental geochemistry, Cape Town, South Africa, April 2004; GeoRef; English |
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CBU @ c.wolke @ 5858 |
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304 |
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Author |
Ahmed, S.M. |
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Title |
Surface chemical methods of forming hardpan in pyrrhotite tailings and prevention of the acid mine drainage |
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1994 |
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acid mine drainage; chemical composition; experimental studies; mines; oxidation; pollution; pyrite; pyrrhotite; remediation; sulfides; tailings; waste disposal; weathering rinds 22, Environmental geology |
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Special Publication - United States. Bureau of Mines, Report: BUMINES-SP-06B-94 |
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Proceedings of the International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage; Volume 2 of 4; Mine drainage |
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2007-045205; International land reclamation and mine drainage conference; International conference on The abatement of acidic drainage, Pittsburgh, PA, United States, April 24-29, 1994 References: 4; illus. incl. 1 table; GeoRef; English |
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Call Number |
CBU @ c.wolke @ 6593 |
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488 |
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Author |
Al-Abed, S.; Allen, D.; Bates, E.; Reisman, D. |
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Title |
Lime treatment lagoons technology for treating acid mine drainage from two mining sites |
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2002 |
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acid mine drainage; case studies; Copper Mine; drainage; geochemistry; heavy metals; hydrochemistry; Leviathan Mine; mining; Nevada; pH; pollutants; pollution; precipitation; remediation; runoff; surface water; Tennessee; United States; waste lagoons; water treatment 22 Environmental geology; 02B Hydrochemistry |
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Hardrock mining 2002; issues shaping the industry |
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2007-046170; Hardrock mining 2002; issues shaping the industry, Westminster, CO, United States, May 7-9, 2002 U. S. Environmental Protection Agency, Office of Research and Development, Washington, DC, United States; GeoRef; English |
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CBU @ c.wolke @ 5621 |
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487 |
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