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Burgess, J.E.; Stuetz, R.M. |
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Title |
Activated Sludge for the Treatment of Sulphur-rich Wastewaters |
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Journal Article |
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2002 |
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Miner. Eng. |
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15 |
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11 |
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839-846 |
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acid rock drainage biooxidation biotechnology environmental waste processing acid-mine drainage sulfate-reducing bacteria biological treatment waste-water metals acclimation remediation oxidation reduction removal |
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Abstract  |
The aim of this investigation was to assess the potential of activated sludge for the remediation of sulphur-rich wastewaters. A pilot-scale activated sludge plant was acclimatised to a low load of sulphide and operated as a flow-through unit. Additional sludge samples from different full-scale plants were compared with the acclimatised and unacclimatised sludges using batch absorption tests. The effects of sludge source and acclimatisation on the ability of the sludge to biodegrade high loads of sulphide were evaluated. Acclimatisation to low-sulphide concentrations enabled the sludge to degrade subsequent high loads which were toxic to unacclimatised sludge. Acclimatisation was seen to be an effect of selection pressure on the biomass, suggesting that the treatment capability of activated sludge will develop after acclimation, indicating potential for treatment of acid mine drainage (AMD) by a standard wastewater treatment process. Existing options for biological treatment of AMD are described and the potential of activated sludge treatment for AMD discussed in comparison with existing technologies. (C) 2002 Elsevier Science Ltd. |
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0892-6875 |
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Nov.; Activated Sludge for the Treatment of Sulphur-rich Wastewaters; Isi:000179970500009; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/10093.pdf; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 10093 |
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40 |
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Matlock, M.M.; Howerton, B.S.; Atwood, D.A. |
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Title |
Chemical precipitation of heavy metals from acid mine drainage |
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Journal Article |
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2002 |
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Water Res |
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36 |
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19 |
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4757-4764 |
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mine water treatment BDET Acid mine drainage Water treatment Remediation Heavy metals Chemical precipitation Mercury Iron |
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The 1,3-benzenediamidoethanethiol dianion (BDET, known commercially as MetX) has been developed to selectively and irreversibly bind soft heavy metals from aqueous solution. In the present study BDET was found to remove >90% of several toxic or problematic metals from AMD samples taken from an abandoned mine in Pikeville, Kentucky. The concentrations of metals such as iron, may be reduced at pH 4.5 from 194 ppm to below 0.009 ppm. The formation of stoichiomietric BDET-metal precipitates in this process was confirmed using X-ray powder diffraction (XRD), proton nuclear magnetic resonance (1H NMR), and infrared spectroscopy (IR). |
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0043-1354 |
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Nov.; Chemical precipitation of heavy metals from acid mine drainage; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/15005.pdf; Science Direct |
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CBU @ c.wolke @ 15005 |
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48 |
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Simmons, J.; Ziemkiewicz, P.; Black, D.C. |
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Title |
Use of Steel Slag Leach Beds for the Treatment of Acid Mine Drainage |
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Journal Article |
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2002 |
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Mine Water Env. |
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21 |
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2 |
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91-99 |
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acid mine drainage Beaver Creek check dam leach beds leaching metal sequestration mine water leaching procedure open limestone channel steel slag West Virginia |
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Steel slag from the Waylite steel-making plant in Bethlehem, Pennsylvania was leached with acidic mine drainage (AMD) of a known quality using an established laboratory procedure. Leaching continued for 60 cycles and leachates were collected after each cycle. Results indicated that the slag was very effective at neutralizing acidity. The AMD/slag leachates contained higher average concentrations of Ba, V, Mn, Cr, As, Ag, and Se and lower average concentrations of Sb, Fe, Zn, Be, Cd, Tl, Ni, Al, Cu, and Pb than the untreated AMD. Based on these tests, slag leach beds were constructed at the abandoned McCarty mine site in Preston County, West Virginia. The leach beds were constructed as slag check dams below limestone-lined settling basins. Acid water was captured in limestone channels and directed into basins to leach through the slag dams and discharge into a tributary of Beaver Creek. Since installation in October 2000, the system has been consistently producing net alkaline, pH 9 water. The treated water is still net alkaline and has a neutral pH after it encounters several other acidic seeps downstream. |
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1025-9112 |
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Use of Steel Slag Leach Beds for the Treatment of Acid Mine Drainage; 1; FG 20 Abb., 4 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17421 |
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249 |
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Younger, P.L.; Cornford, C. |
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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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Author |
Johnson, D.B.; Hallberg, K.B. |
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Title |
Pitfalls of passive mine water treatment |
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Journal Article |
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2002 |
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Reviews in Environmental Science & Biotechnology |
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1 |
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5 |
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335-343 |
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acid mine drainage acidophilic microorganisms heavy metals iron oxidation iron reduction remediation sulfate reduction wetlands Wheal Jane |
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Abstract |
Passive (wetland) treatment of waters draining abandoned and derelict mine sites has a number of detrac-tions. Detailed knowledge of many of the fundamental processes that dictate the performance and longevity of constructed systems is currently very limited and therefore more research effort is needed before passive treatment becomes an “off-the-shelf” technology. |
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1569-1705 |
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Dec.; Pitfalls of passive mine water treatment; 2; FG als Datei vorhanden 4 Abb., 1 Tab.; VORHANDEN | AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 10138 |
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336 |
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