基于木片的田间规模生物过器的长期性能,用于在寒冷气候下从中性矿井排水中去除
Xavier Marc Thevenot1, Tomy Roy1, Eva Pakostova2
1Research Institute on Mines and the Environment (RIME), University of Québec in Abitibi-Témiscamingue (UQAT), Rouyn-Noranda, QC, J9×5E4, Canada.
Water research
|October 17, 2025
概括
一项为期22年的木片生物过器研究有效地从矿井排水中去除了,显示了长期被动治疗的可行性. 微生物和地化学过程驱动了的固定,符合加拿大法规.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 微生物学 微生物学
背景情况:
- 富含 (As) 的中性矿井排水 (As-NMD) 构成环境风险.
- 对As-NMD的长期被动处理系统对于矿场整治至关重要.
- 木片生物过器为As-NMD治疗提供了一个潜在的解决方案.
研究的目的:
- 为了评估一个实地规模的木片生物过器对抗As-NMD的22年性能.
- 研究负责去除的生物地球化学和微生物过程.
- 评估生物过器对被动矿井排水处理的长期疗效.
主要方法:
- 现场规模的生物过器运行和监测超过22年.
- 在不同深度对的物种化分析.
- 同位素和硫酸盐度分析.
- 微生物群落分析 (原生物和真菌多样性).
主要成果:
- 高达80%的去除效率,降低了从0.35到<0.1毫克/升的.
- 观察到深度依赖的氧化还原过程和的物种化.
- 微生物硫酸盐还原热点与通过As-S复合体的固定有关.
- 稳定的 prokaryotic 多样性,但可变的真菌种群;深度依赖的社区转移.
结论:
- 工程木片生物过器为As-NMD提供了有效的长期被动治疗.
- 结合的微生物和地化学过程是持续固定的关键.
- 生物过器代表了一种可行的策略,用于修复被污染的矿井排水.
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