好氧反硝化菌代谢机制及其与重金属相互作用的代谢特征

Metabolic characteristics of aerobic denitrifiers and their interactions with heavy metals

摘要:

好氧反硝化是在好氧条件下将NO₃^–-N最终转化为N₂的过程。好氧反硝化菌不仅表现出优秀的脱氮性能，可在许多极端条件下生存，还拥有多种重金属耐受性。本文总结了不同重金属Cr （VI）、Cu （Ⅱ）和Cd （Ⅱ）对好氧反硝化菌脱氮效率的影响，同时整理了好氧反硝化菌对不同重金属的耐受或去除机制。分析了好氧反硝化菌在工业废水处理中的应用潜力，最后对好氧反硝化菌的未来研究方向进行了简要的展望，期望为工业废水中氮污染和重金属污染处理提供更加全面的理论认识和技术支持。

Abstract:

Aerobic denitrification is an aerobic process to convert NO₃^--N into N₂. Aerobic denitrifiers not only denitrify well, but also survive under extreme conditions such as to tolerate a variety of heavy metals. This paper summarizes the effects of Cr(VI), Cu(Ⅱ), Cd(Ⅱ) on the denitrification efficiency of aerobic denitrifiers. At the same time, the mechanisms of aerobic denitrifiers to tolerate or remove different heavy metals are summarized. The application potential of aerobic denitrifiers in industrial wastewater is analyzed, and the future research direction of aerobic denitrifiers is proposed, to provide comprehensive theoretical understanding and technical support for the treatment of nitrogen and heavy metals pollution in industrial water.