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Canty, G.A.; Everett, J.W. |
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Title |
Injection of Fluidized Bed Combustion Ash into Mine Workings for Treatment of Acid Mine Drainage |
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Journal Article |
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Year |
2006 |
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Mine Water Env. |
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25 |
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1 |
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45-55 |
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acid mine drainage AMD alkaline injection technology fluidized bed combustion ash Oklahoma |
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Abstract |
A demonstration project was conducted to investigate treating acid mine water by alkaline injection technology (AIT). A total of 379 t of alkaline coal combustion byproduct was injected into in an eastern Oklahoma drift coal mine. AIT increased the pH and alkalinity, and reduced acidity and metal loading. Although large improvements in water quality were only observed for 15 months before the effluent water chemistry appeared to approach pre-injection conditions, a review of the data four years after injection identified statistically significant changes in the mine discharge compared to pre-injection conditions. Decreases in acidity (23%), iron (18%), and aluminium (47%) were observed, while an increase in pH (0.35 units) was noted. Presumably, the mine environment reached quasi-equilibrium with the alkalinity introduced to the system. |
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1025-9112 |
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Injection of Fluidized Bed Combustion Ash into Mine Workings for Treatment of Acid Mine Drainage; 1; FG 6 Abb., 1 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17319 |
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422 |
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Author |
Eger, P. |
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Title |
Wetland Treatment for Trace-metal Removal from Mine Drainage – the Importance of Aerobic and Anaerobic Processes |
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Journal Article |
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Year |
1994 |
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Water Sci. Technol. |
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29 |
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4 |
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249-256 |
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Keywords |
copper cobalt nickel zinc ion exchange sulfate reduction adsorption acid mine drainage passive treatment |
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When designing wetland treatment systems for trace metal removal, both aerobic and anaerobic processes can be incorporated into the final design. Aerobic processes such as adsorption and ion exchange can successfully treat neutral drainage in overlandflow systems. Acid drainage can be treated in anaerobic systems as a result of sulfate reduction processes which neutralize pH and precipitate metals.Test work on both aerobic and anaerobic systems has been conducted in Minnesota. For the past three years, overland flow test systems have successfully removed copper, cobalt, nickel and zinc from neutral mine drainage. Nickel, which is the major contaminant, has been reduced around 90 percent from 2 mg/L to 0.2 mg/L. A sulfate reduction system has successfully treated acid mine drainage for two years, increasing pH from 5 to over 7 and reducing concentrations of all metals by over 90 percent.Important factors to consider when designing wetlands to remove trace metals include not only the type of wetlandrequired but also the size of the system and the residence time needed to achieve the water quality standards. |
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0273-1223 |
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Wetland Treatment for Trace-metal Removal from Mine Drainage – the Importance of Aerobic and Anaerobic Processes; Isi:A1994nv30000032; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17336 |
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394 |
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Gusek, J.J. |
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2002 |
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1-14 [Cd-Rom] |
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Constructed wetlands acid mine drainage heavy metals sulfate reduction |
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There are basically two kinds of biological passive treatment cells for treating mine drainage. Aerobic Cells, containing cattails and other plants, are typically applicable to coal mine drainage where iron and manganese and mild acidity are problematic. Anaerobic Cells or Sulfate-Reducing Bioreactors are typically applicable to metal mine drainage with high acidity and a wide range of metals. Most passive treatment systems employ one or both of these cell types. The track record of aerobic cells in treating coal mine drainage is impressive, especially in the eastern coalfields. Sulfate-reducing bioreactors have tremendous potential at metal mines and coal mines, but have not seen as wide an application. This paper presents the advantages of sulfate-reducing bioreactors in treating mine drainage, including: the ability to work in cold, high altitude environments, handle high flow rates of mildly affected ARD in moderate acreage footprints, treat low pH acid drainage with a wide range of metals and anions including uranium, selenium, and sulfate, accept acid drainagecontaining dissolved aluminum without clogging with hydroxide sludge, have life-cycle costs on the order of $0.50 per thousand gallons, and be integrated into “semi-passive” systems that might be powered by liquid organic wastes. Sulfate reducing bioreactors might not be applicable in every abandoned mine situation. However a phased design program of laboratory, bench, and pilot scale testing has been shown to increase the likelihood of a successful design. |
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Park City |
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Proceedings, Annual Conference – National Association of Abandoned Mine Land Programs |
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Sulfate-Reducing Bioreactor Design and Operating Issues – Is this the Passive Treatment Technology for your Mine Drainage?; 2; VORHANDEN | AMD ISI | Wolkersdorfer; als Datei vorhanden 4 Abb. |
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CBU @ c.wolke @ 17348 |
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364 |
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Author |
Janiak, H. |
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Mine drainage treatment in Polish lignite mining |
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Journal Article |
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1992 |
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Mine Water Env. |
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11 |
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1 |
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35-44 |
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laboratory scale tests plants bogs biological filters open cut mining mine drainage filtration flocculation radiation particle size suspended solids water treatment water discharge field tests lignite mines poland mining and industrial water water treatment water quality |
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The paper presents volumes and characteristics of water discharged from some Polish lignite open pit mines and discusses methods for its treatment. Results of research work concerned with increase in mine drainage efficiency by using processes of radiation, flocculation and filtration through a set of bog plants, iknown as grass filter are also discussed |
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Mine drainage treatment in Polish lignite mining; WATERLIT: 00526053 1 Abb., 3 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17356 |
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342 |
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Author |
Kuyucak, N. |
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1999 |
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Abbreviated Journal |
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599-606 |
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hydrogeology mining water acid mine drainage environment treatment control economy oxidation sulphide hydrochemistry |
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International Mine Water Association |
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Fernández Rubio, R. |
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Mine, Water & Environment |
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Acid Mine Drainage Prevention and Control Options; 1; AMD ISI | Wolkersdorfer; FG 'de' 6 Abb., 1 Tab. |
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CBU @ c.wolke @ 17373 |
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325 |
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