负荷波动会影响微生物群落的组合和anammox反应堆中的功能冗余
Hoang Phuc Trinh1, Sang-Hoon Lee1, Hee-Deung Park2
1School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, South Korea.
Water research
|January 25, 2026
概括
适度的负载率 (NLR) 波动可以提高anammox系统的性能和弹性. 然而,严重的NLR干扰会损害去除和微生物稳定性,突出了干扰强度对废水处理生态系统的关键影响.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理工程 废水处理工程
- 生态系统生态学生态学
背景情况:
- 在全尺寸的anammox系统中,载率 (NLR) 的波动是常见的,可能会损害工艺稳定性.
- 在扰乱条件下控制系统弹性的生态机制尚未完全理解.
- 了解这些机制对于优化废水处理中的去除至关重要.
研究的目的:
- 为了研究不同强度的NLR干扰对微生物社区聚集和功能冗余在anammox系统的影响.
- 在稳定和波动的NLR条件下,将生态反应与去除性能关联起来.
- 阐明干扰强度,微生物生态和系统稳定性之间的关系.
主要方法:
- 在稳定的 (R1) 和波动的 (R2) NLR条件下,两个anammox测序批量反应堆在180天内运行.
- 监测去除效率和微生物群落组成.
- 基因组组装基因组分析以评估代谢基因.
- 中立社区建模以确定微生物组装过程 (随机与决定性).
主要成果:
- 温和的NLR波动 (1.4倍) 增强了去除 (高达99.7%) 和阿纳莫克斯细菌的丰度 (26.4%).
- 严重的NLR波动 (2.0倍) 导致去除率降低 (72.2%) 和亚纳莫克斯细菌丰富度 (7.1%).
- 随着干扰强度的增加,NLR干扰改变了代谢的基因表达,并将微生物组合从随机转移到确定性过程.
结论:
- 微生物社区组合和功能冗余性对NLR干扰强度表现出非线性反应.
- 适度的NLR波动可以通过促进随机过程和功能冗余性来提高anammox系统的性能和弹性.
- 严重的NLR干扰会降低性能和降低缓冲能力,需要谨慎的操作策略来进行强大的除.
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