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首页> 外文期刊>Water, air and soil pollution >Role of Equalization Basins of Constructed Wetland Systems for Treatment of Particulate-Associated Elements in Flue Gas Desulfurization Waters
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Role of Equalization Basins of Constructed Wetland Systems for Treatment of Particulate-Associated Elements in Flue Gas Desulfurization Waters

机译：人工湿地系统均化池在烟气脱硫水中处理颗粒物相关元素的作用

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Pilot-scale experiments were performed to investigate the role of equalization basins used with constructed wetland systems for treatment of flue gas desulfurization (FGD) waters. Analysis of FGD water samples indicated that aqueous concentrations of Hg, As, and Se remained constant or changed very slightly in a pilot-scale equalization basin during a 24-h hydraulic retention time (HRT). No change in toxicity of FGD water occurred after one HRT. FGD particles were predominantly silt size, and approximately 99% of particles suspended in FGD water settled to the bottom of a 2.5-m-deep equalization basin during the first 4 h of the 24-h HRT. Approximately 90% of the total As, and smaller percentages of Hg and Se, in FGD water and particles were removed by particle settling in the equalization basin. Results of this investigation lend support to the use of equalization basins for treating FGD waters in constructed wetland treatment systems.
机译：进行了中试实验，研究了与人工湿地系统一起使用的均流池在处理烟气脱硫（FGD）水方面的作用。对烟气脱硫水样品的分析表明，在中试规模的均衡水盆中，在24小时的水力停留时间（HRT）中，Hg，As和Se的水含量保持恒定或变化很小。一小时后，烟气脱硫水的毒性没有变化。 FGD颗粒主要为粉尘大小，在24小时HRT的前4小时内，悬浮在FGD水中的颗粒中约有99％沉降到了2.5 m深的均衡池底部。通过在平衡池中进行颗粒沉降，可以去除烟气脱硫水和颗粒中总砷的约90％，以及汞和硒的百分比较小。这项研究的结果为在建造的湿地处理系统中使用均衡池处理烟气脱硫水提供了支持。

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