酸盐对二阶段垂直流构造湿地中去除和微生物群体的影响
Zifang Chi1, Pengdong Zhang1, Lining Hou1
1Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, PR China.
Chemosphere
|October 27, 2023
概括
两个阶段的垂直流构造的湿地有效地同时去除 (VI) 和. 然而,高 (VI) 度可以抑制去除,尽管这种效果是可恢复的.
科学领域:
- 环境科学 环境科学
- 水处理技术水处理技术
- 微生物生态学 微生物生态学
背景情况:
- 由和六价 (Cr(VI)) 造成的水污染对健康构成重大风险.
- 迫切需要具有成本效益的方法来同时去除这两种污染物.
研究的目的:
- 调查Cr(VI) 对两级垂直流构造湿地 (TS-VFCWs) 脱的影响.
- 使用铁矿石和木片作为介质,探索Cr (VI) 和去除效率之间的关系.
- 为了确定在Cr (VI) 压力下微生物群体的转移.
主要方法:
- 使用铁矿石和木介质的TS-VFCW处理受不同度Cr6污染的水.
- 采用X射线衍射 (XRD) 和X射线光电子光谱 (XPS) 来分析的物种化和结合.
- 量化了去除和确定了关键的微生物种群,参与了Cr (VI) 和循环.
主要成果:
- 在2mg/L的CrVI) 时,可以同时有效地去除CrVI) 和.
- 10 mg/L Cr ((VI) 的度导致了显著的,但可以恢复的,去除的抑制.
- 在铁矿石和木上,Cr (VI) 促进了特定的Cr (VI) 降低/耐药细菌 (IMCC26207,Bryobacter,Streptomyces,Thiobacillus) 的生长.
- 确定了Cr (III) 沉/氧化物作为主要的Cr去除产品.
- 在Cr (VI) 压力下,化和非化细菌的高种群被维持,确保了去除.
结论:
- 用铁矿石和木制成的TS-VFCW在温和的Cr6和水平下有效同时去除Cr6和.
- 高 (Cr) 度对去除效率构成风险,需要谨慎管理.
- 微生物适应和Cr (III) 沉是这些系统中污染物去除的关键机制.
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