Abstract：
An extensive volume of acid mine drainage (AMD) generated throughout the mining process has been widely regarded as one of the most catastrophic environmental problems. Surface water and groundwater impacted by pollution exhibit extreme low pH values and elevated sulfate and metal/metalloid concentrations, posing a serious threat to the production efficiency of enterprises, domestic water safety, and the ecological health of the basin. Over the recent years, a plethora of techniques has been developed to address the issue of AMD, encompassing nanofiltration membranes, lime neutralization, and carrier-microencapsulation. Nonetheless, these approaches often come with substantial financial implications and exhibit restricted long-term sustainability. Among the array of choices, the permeable reactive barrier (PRB) system emerges as a noteworthy passive remediation method for AMD. Distinguished by its modest construction expenses and enduring stability, this approach proves particularly well-suited for addressing the environmental challenges posed by abandoned mines. This study undertook a comprehensive evaluation of the PRB systems utilized in the remediation of AMD. Furthermore, it introduced the concept of low permeability barrier, derived from the realm of site-contaminated groundwater management. The strategies pertaining to the selection of materials, the physicochemical aspects influencing long-term efficacy, the intricacies of design and construction, as well as the challenges and prospects inherent in barrier technology, are elaborated upon in this discourse.
摘要：
在整个采矿过程中产生的大量酸性矿山排水（AMD）已被广泛认为是最灾难性的环境问题之一。受污染影响的地表水和地下水表现出极低的pH值和升高的硫酸盐和金属/准金属浓度。严重威胁企业的生产效率,生活用水安全,和流域的生态健康。近年来,已经开发了大量的技术来解决AMD的问题，包括纳滤膜，石灰中和,和载体微囊化。尽管如此，这些方法通常会带来巨大的财务影响，并表现出有限的长期可持续性。在一系列的选择中，渗透性反应屏障（PRB）系统作为AMD值得注意的被动修复方法出现。以其适度的建设费用和持久的稳定性而著称，事实证明，这种方法特别适合解决废弃地雷带来的环境挑战。这项研究对用于AMD补救的PRB系统进行了全面评估。此外，它引入了低渗透屏障的概念，源自场地污染的地下水管理领域。与材料选择有关的策略，影响长期疗效的物理化学方面，错综复杂的设计和施工，以及屏障技术固有的挑战和前景，在这篇演讲中详细阐述了。
