在中国的废水处理厂中,微生物群落聚集在一起
Qiuju Liu1, Sai Gong1, Han Zhang1
1State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China.
The Science of the total environment
|July 14, 2024
概括
确定性过程是活性污泥生物反应器的关键. 这项研究发现了中国南部.
科学领域:
- 微生物学 微生物学
- 环境科学 环境科学
- 生物技术是生物技术.
背景情况:
- 社区组装过程决定了微生物社区的结构.
- 确定性过程对于优化活性污泥 (AS) 生物反应器性能至关重要.
- 在AS群体中,确定性与随机性的相对重要性是有争议的,影响因素不清楚.
研究的目的:
- 调查中国各地活性污泥社区组装的机制.
- 确定影响微生物群落决定性和随机过程的关键驱动因素.
- 了解组装机制如何影响生物反应器性能.
主要方法:
- 对来自中国28个城市252个活性污泥样本的大规模16S rRNA基因测序数据的分析.
- 中国北部和南部的社区集会模式的比较.
- 结构方程建模的应用,以识别决定性过程的驱动因素.
主要成果:
- 与北方社区 (9.12%) 相比,中国南方的AS社区表现出更强的决定性过程 (14.46%),北方的空间周转率和分散限制较低.
- 南方社区的网络复杂性和稳定性较低.
- 低网络复杂性和高定数感应细菌的丰富性促进了决定性组合,总和液压保留时间作为主要的非生物驱动因素.
结论:
- 在中国南部的活性污泥社区中,决定性组合更为明显,这是由网络复杂性和定数感应细菌所驱动的.
- 了解这些组装机制对于改善活性污泥生物反应器结构和性能至关重要.
- 研究结果强调了区域环境因素在塑造微生物社区聚集中的重要性.
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