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双污泥系统驱动的NDFO-Feammox合器:优化铁循环网络,以实现可持续和高效的去除

Peng Wang¹, Di He¹, Zhenxiong Xiao¹

¹Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou, 510006, China.

|July 15, 2025

概括

海绵铁 (SI) 通过加热结合酸盐依赖的Fe (II) 氧化 (NDFO) 和Fe (III) 介导的氧化 (Feammox) 过程来增强去除. 这种可持续的,自的铁循环系统提高了效率,并揭示了各种逃生途径的代谢重叠.

科学领域:

环境微生物学环境微生物学
生物技术是生物技术.
水处理处理水的方法

背景情况:

传统的生物去除方法是碳密集型和耗能.
开发可持续和自型循环系统对于废水处理至关重要.
基于铁的微生物工艺为去除提供了潜在的替代方案.

研究的目的:

调查海绵铁 (SI) 在驱动结合酸盐依赖的Fe (II) 氧化 (NDFO) 和Fe (III) 介导的氧化 (Feammox) 的功效.
阐明 SI 增强的去除过程中涉及的潜在机制和代谢途径.
为可持续的,自的铁循环系统建立理论基础.

主要方法:

使用的活性污泥和无氧氧化 (Anammox) 污泥补充了海绵铁.
进行批量运动实验和元基因组分析,研究去除机制.
采用双约束数学模型来量化NDFO对Feammox的贡献.

主要成果:

SI补充剂显著增强了去除,达到高达87.1%的NH4+-N和91.8%的NO3−-N去除.
甲基因组分析发现,Candidatus Brocadia在Feammox中占主导地位,并通过SI添加丰富了Anammox基因.
一个数学模型证实NDFO为Feammox提供至少66.1%的Fe (III),表明了显著的代谢重叠和共同代谢.

结论:

海绵铁有效地驱动合NDFO和Feammox工艺,在无氧条件下增强去除.
铁氧化,Feammox介导的铁还原和铁调节网络之间的协同效应维持了NDFO代谢.
这项研究为可持续的,自的铁循环系统提供了基础,具有多样化的逃生通路.

关键词:

亚纳姆莫克斯 (Anammox) 是一个细胞外电子转移细胞外电子转移在Feammox中使用Feammox.铁的氧化还原循环是铁的.这是NDFO.子铁的海绵铁是什么意思

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