Effect of an extreme flood event on solute transport and resilience of a mine water treatment system in a mineralised catchment.
Effect of an extreme flood event on solute transport and resilience of a mine water treatment system in a mineralised catchment.
复制标题
极端洪水事件对矿化流域矿井水处理系统溶质输送和恢复能力的影响。
DOI：
10.1016/j.scitotenv.2020.141693
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Mayes WM
中科院分区：
文献类型：
--
作者：
Mayes WM
据预测，随着气候变化，极端降雨事件将变得更加频繁，并可能对矿化集水区的河流溶质和污染物运输产生重大影响。2015年12月，英格兰西北部的Coledale Beck集水区遭遇了200年一遇的极端降雨事件。该集水区包含英国第一个被动式金属矿山水处理系统，因此在调试前后都受到了严格的溶质动力学监测。由于这一监测记录，该站点提供了一个独特的机会来评估大风暴事件对以下方面的影响：(1)流域尺度溶质运输；(2)新型被动处理系统对极端事件的恢复能力。监测表明，随着时间的推移，处理效率略有下降，这与风暴事件不同步，而是由系统水力效率的变化来解释。事故期间，矿井系统没有出现明显的冲刷现象，这可能会影响处理系统的性能。对该矿下游集水区金属运输的分析表明，在极端事件发生后，无论流量条件如何，下游集水区的锌含量都发生了相对微妙的变化，但在统计上有显著的减少，但大多数感兴趣的参数显示没有显著变化。胶体铁和铝的出口增加与风暴后集水区中部的主要山体滑坡有关，并为这些地区更快地衰减溶解锌提供了新的吸附场所，这一点得到了利用现场材料调查溪流和陆地沉积物中金属的衰减/释放的实验室实验的证实。这些数据很重要，因为它们既显示了被动矿井水处理系统对极端事件的弹性，也显示了集水区尺度监测的重要性，以确保在重大扰动后处理举措的持续有效性。
Extreme rainfall events are predicted to become more frequent with climate change and can have a major bearing on instream solute and pollutant transport in mineralised catchments. The Coledale Beck catchment in north-west England was subject to an extreme rainfall event in December 2015 that equated to a 1 in 200-year event. The catchment contains the UK's first passive metal mine water treatment system, and as such had been subject to intense monitoring of solute dynamics before and after commissioning. Due to this monitoring record, the site provides a unique opportunity to assess the effects of a major storm event on (1) catchment-scale solute transport, and (2) the resilience of the new and novel passive treatment system to extreme events. Monitoring suggests a modest decline in treatment efficiency over time that is not synchronous with the storm event and explained instead by changes in system hydraulic efficiency. There was no apparent flushing of the mine system during the event that could potentially have compromised treatment system performance. Analysis of metal transport in the catchment downstream of the mine suggests relatively subtle changes in instream chemistry with modest but statistically-significant reductions in zinc in the lower catchment irrespective of flow condition after the extreme event, but most parameters of interest show no significant change. Increased export of colloidal iron and aluminium is associated with major landslips in the mid-catchment after the storm and provide fresh sorption sites to attenuate dissolved zinc more rapidly in these locations, corroborated by laboratory experiments utilising site materials to investigate the attenuation/release of metals from stream and terrestrial sediments. The data are important as they show both the resilience of passive mine water treatment systems to extreme events and the importance of catchment-scale monitoring to ensure continued effectiveness of treatment initiatives after major perturbation.
登录
查看更多内容
对塞浦路斯废弃马蒂蒂斯块状硫化物矿中砷、铜、铅和锌储存的矿物学控制
影响因子：
2.7
作者：
K. Hudson;S. Edwards
通讯作者：
S. Edwards
美国科罗拉多州源头山溪酸性矿井排水的分散源和离散源的探索
影响因子：
2.8
作者：
Allison Johnston;R. Runkel;A. Navarre‐Sitchler;K. Singha
通讯作者：
K. Singha
DOI：
--
发表时间：
2016-12
期刊：
--
影响因子：
--
作者：
T. Marsh;C. Kirby;K. Muchan;L. Barker;E. Henderson;J. Hannaford
通讯作者：
T. Marsh;C. Kirby;K. Muchan;L. Barker;E. Henderson;J. Hannaford
影响因子：
5.8
作者：
Jones, A.;Rogerson, M.;Mayes, W. M.
通讯作者：
Mayes, W. M.
DOI：
10.1016/j.isprsjprs.2013.04.009
发表时间：
2013-08-01
影响因子：
12.7
作者：
Lague, Dimitri;Brodu, Nicolas;Leroux, Jerome
通讯作者：
Leroux, Jerome