• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Water, Air, and Soil Pollution >ACCUMULATION AND FATE OF CONTAMINANTS (Zn, Pb, Fe AND S) IN SUBSTRATES OF WETLANDS CONSTRUCTED FOR TREATING MINE WASTEWATER
【24h】

ACCUMULATION AND FATE OF CONTAMINANTS (Zn, Pb, Fe AND S) IN SUBSTRATES OF WETLANDS CONSTRUCTED FOR TREATING MINE WASTEWATER

机译：用于治理矿山废水的湿地基质中污染物（Zn，Pb，Fe和S）的积累和归结

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Substrates of treatment wetlands, which were constructed at an operational lead-zinc mining facility (Tara Mines) in Ireland, were analysed over a 5-year period for metal content. Lead, zinc, iron and sulphate were removed from wastewater passing though the treatment systems and were significantly retained in the substrates. The degree to which these contaminants are bio-available depends on the biogeochemical conditions of the substrates, namely the pH, redox potential, amount of organic carbon present and the contaminant loading. Various sediment fractions (water-soluble, exchangeable, carbonate-bound, organic matter-bound and residual) were also analysed in these treatment wetlands, in order to estimate the fate of metals and sulphur over time. Results showed that the majority of metals and sulphur were retained in immobile residual forms, principally as metal-sulphides. Furthermore, the neutral-alkaline pH and reducing biogeochemistry of the treatment systems suggest that metals are not toxic under these conditions.
机译：在爱尔兰的一个运营铅锌矿开采设施（Tara矿山）中建造的处理湿地基质在5年内进行了金属含量分析。通过处理系统的废水中的铅，锌，铁和硫酸盐被去除，并显着保留在基材中。这些污染物可生物利用的程度取决于底物的生物地球化学条件，即pH值，氧化还原电势，存在的有机碳量和污染物含量。在这些处理湿地中还分析了各种沉积物部分（水溶性，可交换，碳酸盐结合，有机物结合和残留），以估算金属和硫随着时间的流逝。结果表明，大多数金属和硫以不可移动的残留形式保留，主要是作为金属硫化物。此外，中性碱的pH值和处理系统生物地球化学的降低表明金属在这些条件下没有毒性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号