The use of wetlands to sequester and treat mine-influenced effluent containing arsenic

利用湿地封存和处理受矿山影响的含砷废水

• 批准号: 514718-2017
• 负责人: Fraser, Lauchlan
• 金额: $ 1.82万
• 依托单位: Thompson Rivers University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=640345
• 关键词: use; wetlands; sequester; treat; mine

Avino Silver & Gold Mines Ltd. operates the Bralorne Gold Mine in southwestern British Columbia. BralorneGold Mine has been operating under trial production since 2010, but the Company is developing a strategicoperating plan to achieve a profitable operation. During monitoring of mine tailings water at Bralorne GoldMine it has been determined that arsenic is the major contaminant of concern that will require treatmentfollowing mine closure. Wetlands may provide a natural source for the uptake and sequestration of arsenic innon-toxic forms. Here we propose an analysis of arsenic in its various forms within the water, soils, and plantsof a natural wetland that receives an intermittent supply of mine-influenced arsenic-tainted effluent. We willuse the synchrotron facility at the University of Saskatchewan's Canadian Light Source to analyze and maparsenic speciation in our sample materials. Our goal is to test the capability of the synchrotron to analyzearsenic in mine samples and to identify the location of arsenic uptake in our wetland samples. By doing so wehope to better understand the dynamics of the chemical pathway of arsenic so that we can design efficienttreatment methods for ecological restoration.

Avino银金矿有限公司经营着位于不列颠哥伦比亚省西南部的Bralorne金矿。Bralorne金矿自2010年以来一直在试生产，但公司正在制定战略运营计划，以实现盈利。在监测Bralorne金矿的尾矿水期间，已确定砷是矿山关闭后需要处理的主要污染物。湿地可以提供一个天然的来源，吸收和隔离砷的无毒形式。在这里，我们提出了一个分析的砷在其各种形式的水，土壤和plantsof一个天然湿地，接收间歇性供应的矿山影响砷污染的污水。我们将使用萨斯喀彻温大学加拿大光源的同步加速器设备来分析我们样品材料中的物种形成。我们的目标是测试同步加速器分析矿井样品中砷的能力，并确定湿地样品中砷吸收的位置。通过这样做，我们希望能更好地了解砷的化学途径的动态，以便我们可以设计有效的处理方法进行生态恢复.