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首页> 外文会议>Annual national meeting American Society for Surface Mining and Reclamation >GEOCHEMICAL TREATMENT AND PHYTOSTABILIZATION OF ACIDIC MILL TAILINGS IN THE SOUTHERN ROCKY MOUNTAINS
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GEOCHEMICAL TREATMENT AND PHYTOSTABILIZATION OF ACIDIC MILL TAILINGS IN THE SOUTHERN ROCKY MOUNTAINS

机译：南岩石山脉酸性磨机尾矿的地球化学治疗与植物

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摘要

Acid generating mill tailings resulting from hard rock mining pose significant environmental problems throughout the Western United States. One such example is the abandoned Mammoth Lode mine and mill facility in the Pinos Altos Mining District, Grant County, New Mexico. Mill tailings cover approximately one acre in area (3000 cubic yards) and are located inside primary drainage channels. In general the tailings are characterized by low pH, high exchangeable acidity, high future acid generation potential and elevated concentrations of several heavy metals. A plot study was performed to evaluate the potential for geochemical treatment and phytostabilization of the tailings. Six plot locations were selected and were collected for metals, acid/base accounting and soil fertility analyses. Based on the acid/base accounting data, geochemical amendments were added to neutralize the tailings and to bind toxic, soluble metals into insoluble forms. Upon pH stabilization, organic amendments were added and each plot was seeded with a mixture of cool and warm season native grasses. The test plots were monitored for one year. Soil and plant tissue samples were collected for laboratory analysis during the monitoring period. Data from the laboratory analysis indicated that the metals had been successfully immobilized, and that the acid generating potential and pH of the plots remained stabile.
机译：酸产生矿物尾矿由于硬岩挖掘而导致整个美国西部的重大环境问题。一个这样的例子是新墨西哥州格兰特县Pinos Altos Mining区的废弃的Mammoth Lode Loin和Mill设施。铣削尾矿覆盖大约一英亩（3000立方码），位于初级排水通道内。通常，尾矿的特征在于pH值低，可更换酸度高，未来的未来酸性高潜力和几个重金属的升高。进行剧集研究以评估地球化学治疗和尾矿植物的潜力。选择了六个绘图位置，并收集金属，酸/基础会计和土壤肥力分析。基于酸/基础会计数据，加入地球化学修正以中和尾矿并将毒性可溶性金属结合成不溶性形式。在pH稳定后，加入有机型修正，将每种曲线接种，用凉爽和温暖的季草混合物。检测地块被监测一年。在监测期间收集土壤和植物组织样品进行实验室分析。来自实验室分析的数据表明，金属已成功固定，并且酸产生潜力和地块的pH保持稳定。

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