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探索高度粉末载体生物流化床过程的去除性能:溶解氧气的影响

Yingxue Cui¹, Zixuan Liang¹, Hongyu Yu¹

¹Tongji University, College of Environmental Science and Engineering, State Key Lab Pollution Control and Resource Reuse, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.

Journal of environmental sciences (China)

|December 29, 2025

概括

在高度粉末载体生物流化床 (HPB) 工艺中降低溶解氧 (DO) 提高了的去除. 这通过促进微粒化和丰富关键细菌来促进同时化-脱和anammox通路而发生.

科学领域:

环境科学环境科学
微生物学微生物学
化学工程是化学工程的重要组成部分.

背景情况:

高度粉末载体生物流化床 (HPB) 工艺显示出对废水的营养去除有希望.
在HPB中去除的溶解氧 (DO) 调节的理论理解是有限的.

研究的目的:

为了研究DO对HPB系统中去除的影响机制.
为了比较惰性 (二氧化) 和功能 (Fe-C) 载体对DO调节和去除的影响.

主要方法:

在四个不同的DO级别下,在HPB系统中对藻石和Fe-C载体进行实验性比较.
对去除效率,污泥特性,细胞外聚合物 (EPS) 和微生物群落的分析.
微生物分析的重点是微粒中的功能性细菌丰富度,脱细菌 (DNB) 和阿纳摩克斯细菌 (AnAOB).

主要成果:

随着DO的减少,二氧化和Fe-C HPB系统的总去除效率都得到了改善.
较低的DO (0.5-1.0 mg/L) 显著增加了同时的化-脱化和anammox通路.
低DO促进了污泥微粒化,增强了功能性细菌的丰富性,并在微粒中丰富了DNB和AnAOB.
尽管功能细菌的丰富性有限,但Fe-C载体通过微电解加速了微生物的代谢.

结论:

降低DO水平有利于HPB过程中的去除,通过增强污泥微粒和微生物活性.
微粒体内的协同代谢,其中DNB和AnAOB是核心,推动了高效的去除.
铁碳载体通过微电解提供额外的好处,改善代谢率.

关键词:

亚纳姆莫克斯 (Anammox) 是一个微粒状污泥中的微粒状污泥移除的方法移除的方法同时的化-脱 (SND) 技术

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