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Ye, Z.H. |
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Removal and distribution of iron, manganese, cobalt, and nickel within a Pennsylvania constructed wetland treating coal combustion by-product leachate |
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2001 |
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Journal of Environmental Quality |
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30 |
Issue |
4 |
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1464-1473 |
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Keywords |
mine water treatment |
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Abstract  |
A flow-through wetland treatment system was constructed to treat coal combustion by-product leachate from an electrical power station at Springdale, Pennsylvania. In a nine-compartment treatment system, four cattail (Typha latifolia L.) wetland cells (designated Cells I through 4) successfully removed iron (Fe) and manganese (Mn) from the inlet water; Fe and Mn concentrations were decreased by an average of 91% in the first year (May 1996-May 1997), and by 94 and 98% in the second year (July 1997-June 1998), respectively. Cobalt (Co) and nickel (Ni) were decreased by an average of 39 and 47% in the first year, and 98 and 63% in the second year, respectively. Most of the metal removed by the wetland cells was accumulated in sediments, which constituted the largest sink. Except for Fe, metal concentrations in the sediments tended to be greater in the top 5 em of sediment than in the 5- to 10- or 10- to 15-cm layers, and in Cell I than in Cells 2, 3, and 4. Plants constituted a much smaller sink for metals; only 0.91, 4.18, 0.19, and 0.38% of the Fe, Mn, Co, and Ni were accumulated annually in the aboveground tissues of cattail, respectively. A greater proportion of each metal (except Mn) was accumulated in cattail fallen litter and submerged Chara (a macroalga) tissues, that is, 2.81, 2.75, and 1.05% for Fe, Co, and Ni, respectively. Considerably higher concentrations of metals were associated with cattail roots than shoots, although Mn was a notable exception. |
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Removal and distribution of iron, manganese, cobalt, and nickel within a Pennsylvania constructed wetland treating coal combustion by-product leachate; Wos:000174863000040; Times Cited: 15; ISI Web of Science |
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CBU @ c.wolke @ 17061 |
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122 |
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Reiser, D.W.; Vitter, M.W.; Todd, J. |
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Title |
Reclamation of a Colorado stream impacted by acid mine drainage |
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1982 |
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Proceedings of the Annual Meeting, American Fisheries Society, Colorado Wyoming Chapter |
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17 |
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120-132 |
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2 Ecology |
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A heavy metals treatment plant was designed to eradicate the water quality problems of the acid drainage. Within a month following plant operation, aquatic invertebrates were observed in the stream and within 2-3 months fish were recovered throughout the stream reach. -from Sport Fishery Abstracts |
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Camp Dresser & McKee Inc., Environ. Sci. Div., 11455 West 48th Ave., Wheat Ridge, CO 80033, USA. |
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Reclamation of a Colorado stream impacted by acid mine drainage; (0527687); 85l-4136; Using Smart Source Parsing pp price US$10.00; Geobase |
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CBU @ c.wolke @ 17572 |
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264 |
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Bertrand, S. |
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Performance of a nanofiltration plant on hard and highly sulphated water during two years of operation |
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1997 |
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Desalination |
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113 |
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2-3 |
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277-281 |
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mine water treatment |
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A highly sulphated, hard water from a flooded iron mine was treated by nanofiltration for the production of drinking water (125 m(3)/h). This paper introduces the context and summarizes the configuration and operating conditions of the plant. The process performance in terms of product water quality and permeability during the first 2 years is presented and discussed. |
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Performance of a nanofiltration plant on hard and highly sulphated water during two years of operation; Wos:000071218200023; Times Cited: 5; ISI Web of Science |
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CBU @ c.wolke @ 17153 |
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134 |
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Li, L.; Jiang, Y.; Guo, Y. |
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Research on a comprehensive industrialization technology for the treatment of mining water containing sulfate ions |
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1999 |
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Meitian Dizhi Yu Kantan = Coal Geology & Exploration |
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27 |
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6 |
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51-53 |
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acid mine drainage; coal mines; mines; pollution; purification; sulfate ion; technology; water pollution; water treatment 22, Environmental geology |
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A method using a barium reagent was developed for the purification of the higher-sulphate mine water. |
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1001-1986 |
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Research on a comprehensive industrialization technology for the treatment of mining water containing sulfate ions; 2005-057894; References: 5 China (CHN); GeoRef; Chinese |
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CBU @ c.wolke @ 6097 |
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316 |
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Author |
Bechard, G. |
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Title |
Use Of Cellulosic Substrates For The Microbial Treatment Of Acid-Mine Drainage |
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1994 |
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Journal of Environmental Quality |
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23 |
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1 |
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111-116 |
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mine water treatment |
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A mixed aerobic-anaerobic microbial treatment process was developed previously for acid mine drainage (AMD) using straw as a substrate. The process was effective only if AMD was supplemented with sucrose. The present study was conducted to determine which, if any, of three cellulosic materials could sustain the microbial treatment of AMD without the addition of a sucrose amendment and to determine the effect of the retention time on the performance of the reactors. The performance of small reactors that treated simulated AMD in the continuous mode was evaluated using alfalfa (Medicago sativa L.) hay, timothy (Phleum pratense L.) hay, and straw with a 5 d retention time. Parameters measured were pH, Fe, Al, sulfate, and ammonium. Timothy hay and straw sustained AMD mitigation for 3 wk, and thereafter all activity ceased. After the reactors ceased treating AMD, the mitigative activities were reinitiated by the addition of sucrose, but not by urea. Alfalfa sustained AMD mitigation for a longer time period than either straw or timothy. The effect of three retention times, 3.5, 7, and 35 d, was then investigated for reactors containing fresh alfalfa. Increasing the retention time resulted in better metal removal and a greater pH increase. With a 7-d retention time, 75 L of simulated AMD were neutralized from a pH of 3.5 to a pH value greater than 6.5. Reactors operating with a 3.5-d retention time treated only 58.3 L of simulated AMD before failing. Ammonium was detected in effluents of active reactors. The results of this study indicate that a low maintenance microbial treatment system can be developed with alfalfa as a substrate without the addition of a sucrose amendment. |
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Use Of Cellulosic Substrates For The Microbial Treatment Of Acid-Mine Drainage; Wos:A1994mu33000017; Times Cited: 22; ISI Web of Science |
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CBU @ c.wolke @ 17194 |
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89 |
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