陶埃拉和anammox之间的功能失衡决定了在相反的反应器模式下PD/A路径的稳定性
1School of Ecology and Environment, Ningxia University, Yinchuan 750021, China.
Water research
|December 31, 2025
概括
连续流动反应器在部分脱和阿纳摩克斯 (PD/A) 脱相结合时提供了更高的稳定性. 这种方法提高了微生物的合作和系统的弹性,与测序批量反应堆相比.
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
- 生物地质化学循环是什么
背景情况:
- 与anammox (PD/A) 结合的部分脱是一种能源效率高的方法,用于主流的去除.
- 不同反应堆配置的PD/A系统的稳定性需要进一步研究.
研究的目的:
- 系统地比较测序批次 (RS) 和连续流 (RC) PD/A系统的稳定性和性能.
- 阐明影响PD/A系统稳定的潜在机制,包括微生物活动和社区结构.
主要方法:
- 对RS和RC PD/A系统进行比较分析.
- 性能监测,包括去除效率和anammox贡献.
- 微生物活动测定量化部分脱和anammox过程.
- 超基因组学分析以评估微生物群落组成和功能基因.
主要成果:
- RC系统表现出卓越的长期稳定性,实现了超过80%的去除,anammox贡献>90%.
- RS系统不太稳定 (∼65%的NRE,∼75%的anammox贡献) 并且有利于完全的脱.
- 活动测试表明,与RC相比,RS中的部分脱和anammox活动的比率更高,这表明微生物合作水平不同.
- 甲基因组数据显示RS中特定的脱基因 (Nir/Nor/Nos) 的丰富,与其趋向于完全脱的倾向相关.
结论:
- 反应器模式显著影响PD/A系统的稳定性和微生物动态.
- 连续流动操作促进微生物合作,并提高PD/A过程中的系统弹性.
- 这项研究为优化PD/A技术在主流废水处理中稳定实施提供了关键的机制见解.
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