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Updated: Jun 13, 2025

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通过有机物诱导的溶解氧透深度动力学激活氧化铁,增强了微空气颗粒污泥中铁循环驱动的氧化

Hui Xu¹, Liang Zhang², Zong Li³

¹College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Nanyang Environment and Water Research Institute, Nanyang Technological University, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore.

|September 11, 2024

概括

本研究介绍了一种铁循环驱动的无氧微空气 (A/O) 过程,用于废水处理. 它通过控制有机物水平来有效地去除有机物和,从而激活颗粒污泥中的铁氧化还原循环.

科学领域:

环境工程环境工程
微生物学微生物学
生物地质化学生物地质化学

背景情况:

铁氧化还原循环可以提高低强度氨废水处理中的anammox效率.
维持有效的铁氧化还原循环和抑制酸盐氧化细菌在单阶段部分酸盐和anammox (PN / A) 过程中具有挑战性.

研究的目的:

开发一种新的策略,以在铁介导的无氧微气氧 (A/O) 过程中有效的铁氧化还原循环.
通过节能方法,从低强度废水中实现同时去除碳和.

主要方法:

使用微空气颗粒污泥 (MGS) 实施A/O过程.
控制中等强度有机物 (OM) 含量 (30-110毫克COD/L),以调节MGS中的溶氧 (DO) 透.
分析与减少铁相关的微生物群落和基因表达.

主要成果:

该A/O工艺实现了90%以上的OM去除和75%以上的去除.
在MGS中,中强OM调节DO透,调节氧化还原条件和活性铁氧化物.
建立了一个稳定的微生物群落,包括氨氧化细菌,减少铁的细菌和anammox细菌,支持高的anammox和Feammox率.

结论:

铁循环驱动的A/O过程有效地从低强度废水中去除OM和.
控制OM对于保持MGS中氧化还原平衡和微生物活性至关重要,以保持稳定的PN/A过程.
这种方法为同时去除碳和提供了一种节能替代方案,在结合的Feammox中,特定细菌可能发挥作用.

关键词:

无氧氨氧化氧化无氧氨氧化.动力学溶解氧透率溶解氧透率铁的氧化还原循环是铁的.低强度的废水处理器微空气颗粒污泥的微空气颗粒污泥

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