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Slow progress in controlling AMD: a perspective and a new approach

机译:控制AMD的进展缓慢:观点和新方法

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Difficulties arise in implementing environmental technologies in the mining sector because important fundamental processes, which lead to the environmental degradation, are ignored. Weathering rates, the role of bacteria in the process and the incomplete application of the matching principle of accounting at the time the mining disturbance take place. Mining is a multi-stakeholder activity and the environmental problems have multivariate dimensions also effecting process. The limiting factors in the contaminant generation process are the transport of oxygen by advection, convection or diffusion in air or water and the associated microbial activity. Weathering products are transported from the mineral surface by atmospheric precipitation to surface and groundwater. This contamination takes place at different rates, requiring a long time to evaluate technological choices. Restoration efforts have to focus on slow reaction rates in the contaminant generating processes. Technology, which does not address the reaction rates and is selected based on inappropriate time scales, will not provide long-term solutions. Natural approaches to reduce acid generation, based on Ecological Engineering principles have required decades of research and field testing, but now show promise in addressing the cause of AMD and ameliorating its effects.
机译:由于忽略了导致环境退化的重要基本过程,因此在采矿业中实施环境技术遇到了困难。风化率,细菌在过程中的作用以及采矿干扰发生时会计核算原则的不完全应用。采矿是一个多方利益相关者的活动,环境问题的多方面性也影响到过程。污染物产生过程中的限制因素是氧气通过空气或水中的对流,对流或扩散以及相关的微生物活性而迁移。风化产物通过大气降水从矿物质表面传输到地表和地下水。这种污染发生的速率不同,需要很长时间才能评估技术选择。恢复工作必须集中在污染物产生过程中缓慢的反应速率上。无法解决反应速率并根据不适当的时间范围进行选择的技术无法提供长期的解决方案。基于生态工程原理的减少酸生成的自然方法需要数十年的研究和现场测试,但现在在解决AMD的原因和改善其影响方面显示出希望。

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