随着新能源的开发，全球有色金属价格上涨 湿法冶金选矿工艺重新引起了人们对铜镍铂族元素的兴趣 明尼苏达州北部德卢斯杂岩中的（铂族）矿石。然而，德卢斯复合材料的开采已经停止 将含有硫化物的岩石暴露在大气中的可能性 导致矿山加工废水中酸、硫酸盐和重金属的释放。 此外，明尼苏达州北部的监管气候明显不同于美国 当第一批塔孔尼矿开发出来时。识别受损水域，以及 新的防降解法规，以及非政府组织的审查 组织和当地的美洲原住民部落已经使这一点大大提高 排放与新采矿作业相关的工艺水具有挑战性。 为了在当今的监管环境中生存下去，21世纪的矿山必须调和 金属和硫酸盐负荷增加的可能性可能更严格 排放要求，或寻求完全排放的替代方案。这篇论文 介绍了纳滤在采矿过程水处理中的潜在应用 回收矿场工艺用水，以便在选矿过程中重复使用（通常为净水） 耗水量），从而消除采矿期间的地表水排放 操作。治疗的长期目标是防止疾病的累积 尾矿池水中溶解的无机成分，主要是硫酸盐和金属 避免对选矿作业产生不利影响，同时保护环境 矿井关闭后。而纳滤通常用于去除 饮用水中的二价盐，其在采矿业中的应用才刚刚开始 一开始，很大程度上是由于监管环境的变化，但也是为了 最大限度地利用工业用水。包括表格，数字。

Increases in the global prices of non-ferrous metals, along with the development of new hydrometallurgical beneficiation processes, have renewed interest in the copper-nickel-platinum group element (PGE) ores in the Duluth Complex of northern Minnesota. However, mining of the Duluth Complex material has the potential to expose sulfide-containing rock to the atmosphere, which can potentially result in the release of acid, sulfate, and heavy metals in mine process waters. Additionally, the regulatory climate in Northern Minnesota is significantly different than when the first taconite mines were developed. The identification of impaired waters, and new anti-degradation regulations, along with scrutiny from non-governmental organizations and local Native American tribes have made it significantly more challenging to discharge process waters associated with new mining operations. In order to be viable in today's regulatory climate, the 21st century mine must reconcile the potential for increased loads of metals and sulfate with potentially more stringent discharge requirements, or look to alternatives to discharge altogether. This paper describes the potential application of nanofiltration to mining process water treatment to reclaim mine site process water for reuse in the beneficiation process (typically a net consumer of water), thereby eliminating any surface water discharges during mining operations. The long-term goal of treatment would be to prevent the build up of dissolved inorganic constituents, primarily sulfate and metals, in tailings basin water to avoid adverse impacts to the beneficiation operations and to protect the environment at post-mine closure. While nanofiltration is commonly employed for the removal of divalent salts in drinking water, its application in the mining industry is only now beginning, in large part due to a changing regulatory climate, but also in order to maximize industrial water reuse. Includes table, figures.