一种利用铁循环作为催化剂同时去除 NH 和 NO 的新方法：Feammox 与 NAFO 偶联。
A novel method of simultaneous NH and NO removal using Fe cycling as a catalyst: Feammox coupled with NAFO.
机构信息
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou 215009, China.
School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, Suzhou 215009, China.
出版信息
Sci Total Environ. 2018 Aug 1;631-632:153-157. doi: 10.1016/j.scitotenv.2018.03.018. Epub 2018 Mar 16.
The feasibility of using Feammox coupled with nitrate-dependent Fe(II) oxidizing (NAFO) to cause the simultaneous conversion of NH and NO was explored by inoculation with Feammox sludge and the use Fe cycling as catalyst. After 61days operation, the simultaneous conversion of NO and NH occurred with the presence of interconversion between Fe(III) and Fe(II). The conversion ratio of NH to NO stabilized at 0.9-1. The results of isotopic tracing and microbial diversity analysis indicated that NH was first oxidized to NO by Fe(III), then NO was reduced to NO and N by the Fe(II) produced in Feammox process, and finally, the NO produced in NAFO process underwent an Anammox process with the remaining NH to yield N. The results showed the simultaneous continuous conversion process of NO and NH with limited Fe as a catalyst was a coupled process of Feammox, Anammox, and NAFO under the anaerobic conditions.
采用接种 Feammox 污泥和利用铁循环作为催化剂的方法，探索了利用 Feammox 耦合硝酸盐依赖型 Fe(II)氧化（NAFO）同时将 NH 和 NO 转化为 N 的可行性。经过 61 天的运行，在 Fe(III)和 Fe(II)相互转化的情况下，发生了 NO 和 NH 的同时转化，NH 到 NO 的转化率稳定在 0.9-1。同位素示踪和微生物多样性分析的结果表明，NH 首先被 Fe(III)氧化为 NO，然后由 Feammox 过程中产生的 Fe(II)将 NO 还原为 NO 和 N，最后，NAFO 过程中产生的 NO 与剩余的 NH 一起经历 Anammox 过程生成 N。结果表明，以有限的 Fe 作为催化剂的 NO 和 NH 同时连续转化过程是在厌氧条件下 Feammox、Anammox 和 NAFO 的耦合过程。
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