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硝化细菌对碘普罗胺的降解及作用机制

Keywords: 碘普罗胺,硝化细菌,好氧硝化,共代谢作用

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Abstract:

将富含硝化细菌的驯化污泥投放于培养基中,以碘普罗胺(IOPr)为处理对象,研究硝化细菌对IOPr的降解促进作用情况。结果表明,富集培养的硝化细菌能有效地促进IOPr的降解,最佳反应条件为:温度30℃,pH8.0~8.5,初始投加浓度为10mg/L,同时在硝化细菌存在条件下,IOPr的5d降解率可达84.1%。IOPr的生物降解属于共代谢机制,向培养基中加入葡萄糖、可溶性淀粉和麦芽糖,可以显著提高IOPr的降解去除率;在投加500mg/L葡萄糖作为外加碳源时,硝化细菌对IOPr的3d降解率可达60.3%。

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