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Bacterial Flora of the Large Intestine01:29

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The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
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A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
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微生物组的结构和功能并行进行全面的有氧颗粒污泥和活性污泥过程.

Jennifer Ekholm1, Frank Persson1, Mark de Blois2

  • 1Division of Water Environment Technology, Department of Architecture and Civil Engineering, Chalmers University of Technology, Sven Hultins Gata 6, 41296, Gothenburg, Sweden.

Applied microbiology and biotechnology
|May 13, 2024
PubMed
概括

有氧颗粒污泥 (AGS) 和常规活性污泥 (CAS) 废水处理显示出类似的废水质量,但不同的微生物动态. 与CAS相比,AGS在时间上的微生物多样性和稳定性更高.

关键词:
有氧颗粒污泥的有氧颗粒污泥传统的活性污泥是一种常规的活性污泥.多样性多样性多样性多样性完整的尺度,完全的尺度.微生物社区的微生物社区.市政废水处理的城市废水处理.

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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
  • 生物膜科学 生物膜科学

背景情况:

  • 有氧颗粒污泥 (AGS) 形成球形生物膜,与传统活性污泥 (CAS) 的花结构不同.
  • 了解微生物组的动态对于优化生物废水处理性能至关重要.

研究的目的:

  • 为了比较全面的AGS和CAS系统的处理性能和微生物组动态.
  • 调查微生物群落结构,功能群体和两个废水处理过程中的时间变化.

主要方法:

  • 在市政污水处理厂的两个全尺寸AGS反应堆和一个并行CAS系统的比较分析.
  • 微生物组概况和功能微生物组 (AOB,NOB,PAO,GAO) 的分析.
  • 微生物社区动态的季节性周期性评估和网络分析.

主要成果:

  • 无论是AGS还是CAS,都实现了较低的废水度,其中较小的波动归因于基质的可用性.
  • 与CAS相比,AGS显示微生物多样性略高,稳定性更强,季节性变化较小.
  • 关键的功能组 (AOB,NOB,PAO,GAO) 显示了类似的趋势,但在AGS和CAS之间相对丰富和属级组成方面存在差异.

结论:

  • AGS和CAS是有效的废水处理方法,具有可比的废水质量.
  • 微生物组的组成和时间动态,特别是在属层面,在AGS和CAS之间存在显著差异.
  • 在这两种系统中存在功能冗余,通过模块化微生物集群和多样化的时间模式来表明.