MODELING OF MULTICOMPONENT REACTIVE TRANSPORT IN GROUNDWATER .2. METAL MOBILITY IN AQUIFERS IMPACTED BY ACIDIC MINE TAILINGS DISCHARGE

被引:74
作者
WALTER, AL
FRIND, EO
BLOWES, DW
PTACEK, CJ
MOLSON, JW
机构
关键词
D O I
10.1029/94WR00954
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The mobility of potentially toxic dissolved metals discharged from a mine tailings source into an aquifer is investigated by using the multicomponent reactive transport model MINTRAN. A generic aquifer resembling a site in northern Ontario is used as a basis, and a scenario analysis is performed to determine the effect of terminating the source input of acidity and dissolved metals after a finite time. It is found that for most metals the buffering reactions in the carbonate aquifer lower the dissolved metal concentrations substantially, often by several orders of magnitude. In the case of a 12-year source duration, most metals are effectively immobilized by precipitation, and the concentrations of metals remaining in solution are well below drinking water limits. The risk of contamination of water resources by toxic metals can thus be controlled.
引用
收藏
页码:3149 / 3158
页数:10
相关论文
共 15 条
  • [1] Allison J.D., 1990, MINTEQA2 PRODEFA2 GE
  • [2] BLAIR RD, 1981, THESIS U WATERLOO WA
  • [3] THE PORE-WATER GEOCHEMISTRY AND THE MINERALOGY OF THE VADOSE ZONE OF SULFIDE TAILINGS, WAITE-AMULET, QUEBEC, CANADA
    BLOWES, DW
    JAMBOR, JL
    [J]. APPLIED GEOCHEMISTRY, 1990, 5 (03) : 327 - 346
  • [4] THE FORMATION AND POTENTIAL IMPORTANCE OF CEMENTED LAYERS IN INACTIVE SULFIDE MINE TAILINGS
    BLOWES, DW
    REARDON, EJ
    JAMBOR, JL
    CHERRY, JA
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 1991, 55 (04) : 965 - 978
  • [5] DAVE NK, 1991, 2ND INT C AB AC DRAI
  • [6] DUBROVSKY NM, 1986, THESIS U WATERLOO WA
  • [7] Migration of acidic groundwater seepage from uranium-tailings impoundments. III. Simulation of the conceptual model with application to Seepage Area A
    Morin, K.A.
    Cherry, J.A.
    [J]. Journal of Contaminant Hydrology, 1988, 2 (04) : 323 - 342
  • [8] Morin K. A., 1988, Journal of Contaminant Hydrology, V2, P305, DOI 10.1016/0169-7722(88)90009-5
  • [9] Migration of acidic groundwater seepage from uranium-tailings impoundments. I. Field study and conceptual hydrogeochemical model
    Morin, K.A.
    Cherry, J.A.
    Dave, N.K.
    Lim, T.P.
    Vivyurka, A.J.
    [J]. Journal of Contaminant Hydrology, 1988, 2 (04) : 271 - 303
  • [10] MORIN KA, 1983, THESIS U WATERLOO WA