Study on technology and mechanism of antimony removal by FeSO4 enhanced activated sludge method(FeSO4强化活性污泥法除锑技术研究)
针对印染废水中难以去除的低浓度锑,采用FeSO4强化活性污泥法,并结合高通量测序、扫描电子显微镜(SEM)、傅里叶变换红外光谱(FTIR)和X射线光电子能谱(XPS)探究其除锑机理。结果表明:(1)FeSO4强化活性污泥法具有较强的除锑性能,当锑初始浓度为250 μg·L-1,pH为8,Fe2+投加量为90 mg·L-1时,Sb(Ⅴ)去除率稳定在60%以上;共存离子对Sb(Ⅴ)去除率有促进或抑制作用。(2)在投加FeSO4的驯化过程中,活性污泥微生物丰度和多样性降低,颗粒更松散、比表面积增大、粒径减小,与锑的接触面积增大,从而提高了除锑效率;Fe2+在生化过程中被原位氧化为α-FeO(OH),...
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Format: | Article |
Language: | zho |
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Zhejiang University Press
2023-03-01
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Series: | Zhejiang Daxue xuebao. Lixue ban |
Online Access: | https://doi.org/10.3785/j.issn.1008-9497.2023.02.008 |