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Updated: Jul 8, 2025

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

通过使用CO₂/NaHCO₃缓冲器来提高anammox活动和反应器启动速度

Shaoan Cheng¹, Huahua Li¹, Xinyuan He¹

¹State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou 310027, China.

Journal of environmental sciences (China)

|December 17, 2023

概括

CO2/NaHCO3缓冲溶液 (CCBS) 有效地加速了anammox反应堆的启动,实现了快速的去除. 这种缓冲器使得anammox污泥能够快速建立,即使在非严格的无氧条件下.

科学领域:

环境微生物学环境微生物学
废水处理技术废水处理技术

背景情况:

亚纳莫克斯细菌表现出缓慢的生长率和对pH值变化的敏感性,使反应堆启动复杂化.
有效的缓冲策略对于优化anammox过程和实现反应堆快速建立至关重要.

研究的目的:

调查不同缓冲溶液对去除和anammox污泥生长的影响.
为了确定最佳的缓冲条件,以快速有效地启动anammox反应堆.

主要方法:

对三种缓冲溶液进行比较分析:CO2/NaHCO3缓冲溶液 (CCBS),HEPES和PBS.
监测实验室级反应堆中去除效率和阿纳莫克斯污泥特性.
评估anammox活动和细菌群体组成 (主导物种:Candidatus Kuenenia).

主要成果:

与HEPES和PBS相比,CCBS在去除方面表现优越,这些药物抑制了anammox的活性.
使用50mmol/LCCBS的反应器在20天内实现了快速启动,具有高的特异性anammox活性 (1.01±0.10 gN/(gVSS·day)) 和体积活性 (0.83±0.06 kgN/(m3·day)).
鉴定出Candidatus Kuenenia是主导的异体细菌 (71.8%的相对丰度),而CCBS甚至在非严格的无氧条件下也促进了快速启动.

结论:

CO2/NaHCO3缓冲溶液 (CCBS) 在快速启动anammox反应堆方面非常有效.
CCBS促进了高效的去除,并支持了像Candidatus Kuenenia这样的主导性异体细菌的生长.
这些发现提供了一个可行的策略,以加快工程化anammox系统的发展.

关键词:

亚纳莫克斯细菌 (Anammox) 是一种细菌.缓冲溶液的缓冲解决方案是什么碳二氧化 (CO2) /纳二氧化 (NaHCO3) 的含量.微生物社区的转移转移生理学特征生理学特征

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