砷
氟化物
化学
环境化学
人工湿地
厚壁菌
湿地
废水
微生物种群生物学
基质(水族馆)
环境工程
无机化学
环境科学
生态学
细菌
生物化学
地质学
生物
有机化学
古生物学
基因
16S核糖体RNA
作者
Han Lü,Jüan Li,Xinchun Liu,Zhisheng Yu,Ruyin Liu
标识
DOI:10.1002/cbdv.201900078
摘要
Abstract A pilot‐scale hybrid wetland system was constructed for the removal of fluoride and arsenic from synthetic wastewater. After five months of operation, the fluoride and arsenic removal rate were at the value of 65 % and 90 %, respectively. Through calculation, the accumulation of fluoride in plants only accounted for 1.63 % of the accumulation in substrates, and the accumulation of arsenic in plants accounted for 3.3 % of that in substrates. Both the accumulation of fluoride and arsenic in plants were much higher in roots than that in leaves. And for substrates, the accumulation in the first layer was higher than the second layer. The changes of microbial community in the substrate of the wetland during the operation were also analyzed to investigate the effects of operating condition on the microbial community and to study the role of microorganism on the removal of fluoride and arsenic. The results showed that the relative abundance of Firmicutes reduced, while the relative abundance of Proteobacteria increased, indicating that the fluoride and arsenic in solution had a great influence on the microbial community. Findings of this study suggest that the hybrid constructed wetland system may be a promising process for the removal of fluoride and arsenic from synthetic wastewater.
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