| Records |
| Author |
Boonstra, J.; van Lier, R.; Janssen, G.; Dijkman, H.; Buisman, C.J.N.; Ballester, R.A. and A. |
| Title |
Biological treatment of acid mine drainage |
Type |
Book Chapter |
| Year |
1999 |
Publication  |
Process Metallurgy |
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Pages |
559-567 |
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| Abstract |
In this paper experience obtained with THIOPAQ technology treating Acid Mine Drainage is described. THIOPAQ Technology involves biological sulfate reduction technology and the removal of heavy metals as metal sulfide precipitates. The technology was developed by the PAQUES company, who have realised over 350 high rate biological treatment plants world wide. 5 plants specially designed for sulfate reduction are successfully operated on a continuous base (1998 status). At Budelco, a zinc refinery in the Netherlands, an acid groundwater stream is effectively treated since 1992, removing metals and sulfate. At Kennecott Utah Copper (USA) a demo plant is in operation since 1995. An acid groundwater flow is treated to remove sulfate and metals, whereas the excess sulfide is used to selectively recover copper economically. Early 1998, a demonstration project was executed at the Wheal Jane mine in Cornwall, UK. In this demonstration project it has been proven that THIOPAQ technology can effectively be used to treat the Wheal Jane Acid Mine Drainage. Relative to lime dosing technology, very high removal efficiencies of all heavy metals (including cadmium and arsenic) can be obtained. |
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Elsevier Science B.V. |
Place of Publication |
Volume 9, Part 2 |
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Biological treatment of acid mine drainage; Science Direct |
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no |
| Call Number |
CBU @ c.wolke @ 17269 |
Serial |
32 |
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| Author |
Guay, R.; Cantin, P.; Karam, A.; Vezina, S.; Paquet, A.; Ballester, R.A. and A. |
| Title |
Effect of flooding of oxidized mine tailings on T. ferrooxidans and T. thiooxidans survival and acid mine drainage production: a 4 year restoration-environmental follow-up |
Type |
Book Chapter |
| Year |
1999 |
Publication |
Process Metallurgy |
Abbreviated Journal |
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Issue |
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Pages |
635-643 |
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A pilot-scale study on the effect of flooding unoxidized and oxidized Cu/Zn tailings demonstrated the technical feasability of this technology to remediate a mining site where over 3 million tons of tailings were impounded. Full-scale flooding of the tailing pond with free running water was undertaken after the construction of an impervious dam; approximately 2 million m3 of surface water at pH 7,4 completely covered the tailings after 16 months. The minimal water column over the tailings was established at 1,20 m and reached 4,5 m, depending on the site topography. Water and tailings samples were collected from 9 different locations from the surface of the man-made lake using a specially designed borer and were analyzed for pH, conductivity, iron- and sulfur-oxidizing bacteria activity and numbers as well as the sulfate reducing bacteria (SRB) population. We showed that over a four year period of flooding, the overall population of iron-oxidizers decreased considerably; their numbers drastically fell from 1x106 to 1x102 active cells per g of oxidized tailings while the SRBs increased from 101 to 105/g. The pH of the influent, the reservoir and the effluent water remained fairly constant between 6,9 up to 7,4 over the entire period. During this time, interstitial water pH increased from 2,9 to 4,3 in flooded tailings where lime could not be incorporated in the first 20 cm of tailings; elsewhere, the pH of the tailings suspensions remained fairly constant around neutral values (pH 7,0). Dissolved oxygen was measured at fixed intervals and remained also constant between 6 and 7.5 mg/L while water temperatures fluctuated below freezing point to +20C respectively in winter and summer season. |
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Elsevier Science B.V. |
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Volume 9, Part 2 |
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Effect of flooding of oxidized mine tailings on T. ferrooxidans and T. thiooxidans survival and acid mine drainage production: a 4 year restoration-environmental follow-up; Science Direct |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17271 |
Serial |
33 |
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| Author |
Karathanasis, A.D.; Barton, C.D. |
| Title |
The revival of a failed constructed wetland treating a high Fe load AMD |
Type |
Book Chapter |
| Year |
1999 |
Publication |
Proceedings; biogeochemistry of trace elements in coal and coal combustion byproducts |
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abandoned mines acid mine drainage anaerobic environment carbonate rocks characterization composting constructed wetlands design environmental analysis ferrihydrite geologic hazards hydrology hydroxides iron iron hydroxides Kentucky limestone metals minerals mines organic compounds oxides pollution remediation runoff sedimentary rocks sediments solubility sulfate ion United States water quality water treatment wetlands 22, Environmental geology |
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Kluwer Academic/Plenum Publishers |
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New York |
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Sajwan, K.S.; Alva, A.K.; Keefer, R.F. |
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0306462885 |
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The revival of a failed constructed wetland treating a high Fe load AMD; GeoRef; English; 2002-039561; Fourth international conference on the Biogeochemistry of trace elements, Berkeley, CA, United States, June 23, 1997 References: 45; illus. incl. 2 tables, sketch maps |
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no |
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CBU @ c.wolke @ 16571 |
Serial |
82 |
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| Author |
Kepler, D.A.; Mc Cleary, E.C. |
| Title |
Successive Alkalinity-Producing Systems (SAPS) for the Treatment of Acid Mine Drainage |
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Journal Article |
| Year |
1994 |
Publication |
Proceedings, International Land Reclamation and Mine Drainage Conference |
Abbreviated Journal |
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1 |
Issue |
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Pages |
195-204 |
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acid mine drainage; alkalinity; anaerobic environment; calcium carbonate; chemical reactions; experimental studies; pH; pollutants; pollution; remediation; water quality SAPS mine water RAPS |
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Constructed wetland treatment system effectiveness has been limited by the alkalinity-producing, or acidity-neutralizing, capabilities of systems. Anoxic limestone drains (ALD's) have allowed for the treatment of approximately 300 mg/L net acidic mine drainage, but current design guidance precludes using successive ALD's to generate alkalinity in excess of 300 mg/L because of concerns with dissolved oxygen. “Compost” wetlands designed to promote bacterially mediated sulfate reduction are suggested as a means of generating alkalinity required in excess of that produced by ALD's. Compost wetlands create two basic needs of sulfate reducing bacteria; anoxic conditions resulting from the inherent oxygen demand of the organic substrate, and quasi-circumneutral pH values resulting from the dissolution of the carbonate fraction of the compost. However, sulfate reduction treatment area needs are generally in excess of area availability and/or cost effectiveness. Second generation alkalinity-producing systems demonstrate that a combination of existing treatment mechanisms has the potential to overcome current design concerns and effectively treat acidic waters ad infinitum. Successive alkalinity-producing systems (SAPS) combine ALD technology with sulfate reduction mechanisms. SAPS promote vertical flow through rich organic wetland substrates into limestone beds beneath the organic compost, discharging the pore waters. SAPS allow for conservative wetland treatment sizing calculations to be made as a rate function based on pH and alkalinity values and associated contaminant loadings. SAPS potentially decrease treatment area requirements and have the further potential to generate alkalinity in excess of acidity regardless od acidity concentrations. |
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Successive Alkalinity-Producing Systems (SAPS) for the Treatment of Acid Mine Drainage; Cn, Kj, Aj; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9722.pdf; AMD ISI | Wolkersdorfer |
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no |
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CBU @ c.wolke @ 9722 |
Serial |
55 |
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| Author |
Benkovics, I.; Csicsák, J.; Csövári, M.; Lendvai, Z.; Molnár, J. |
| Title |
Mine Water Treatment – Anion-exchange and Membrane Process |
Type |
Journal Article |
| Year |
1997 |
Publication |
Proceedings, 6th International Mine Water Association Congress, Bled, Slovenia |
Abbreviated Journal |
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1 |
Issue |
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Pages |
149-157 |
| Keywords |
uranium mining Hungary Mecsek Ore Mining Company waste water mine water chemistry nano-filtration reverse osmosis pilot plant mine water treatment treatment |
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Mine Water Treatment – Anion-exchange and Membrane Process; 1; FG 6 Abb., 2 Tab.; AMD ISI | Wolkersdorfer |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 9530 |
Serial |
455 |
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