对深度道排水系统中排水水质的变化进行metagenomic洞察
Yibing Li1, Lu Dai1, Lixun Zhang1
1Guangdong Provincial Engineering Technology Research Center for Urban Water Cycle and Water Environment Safety, Institute of Environment and Ecology, Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, PR China; State Environmental Protection Key Laboratory of Microorganism Application and Risk Control, School of Environment, Tsinghua University, Beijing, 100084, PR China.
Environmental research
|August 7, 2025
概括
深度道改造通过提高雨水的微生物净化来改善城市排水. 储存的雨水显示了丰富的功能微生物和稳定的生物地化学循环,这对于污染控制至关重要.
科学领域:
- 环境微生物学 环境微生物学
- 城市水文学 城市水文学
- 生物地质化学生物地质化学
背景情况:
- 城市排水系统面临着雨水污染和洪水带来的挑战.
- 雨水中的微生物过程至关重要,但人们对其了解甚少,尤其是在储存过程中.
- 深度道改造为雨水管理和污染减轻提供了一种战略.
研究的目的:
- 为了研究季节性水质,微生物动力学和功能基因调节在深道雨水自净化系统.
- 了解储存雨水中的水地化学因素和微生物群落之间的相互作用.
- 评估深道在增强微生物介导雨水净化方面的有效性.
主要方法:
- 在现场建造一个雨水自净化系统.
- 对季节性水质演变和溶解有机物质的分析.
- 62个功能基因 (碳,,硫循环) 的微生物社区概况和定量评估.
- 对影响微生物群落和基因丰富性的水地化学驱动因素的统计分析.
主要成果:
- 最初的干旱后雨水污染物负载较高;内源性污染物占据了储存样本的主导地位.
- 储存有利于丰富特定的微生物种群 (Plancomycetota,Verrucomicrobiota,Proteobacteria) 的情况.
- 温度,氧化还原潜力,氨,COD和总是微生物继承和基因丰富的关键驱动因素.
- 循环基因对环境波动的敏感性更高,在雨季样本中稳定性增加.
- 与表面样本相比,深样本表现出更稳定的功能基因配置文件和丰富的微生物联盟.
结论:
- 水地化学变量显著影响雨水储存中的微生物社区结构和功能.
- 深系统增强了微生物的弹性和功能基因稳定性,用于雨水净化.
- 研究结果提供了对生物地球化学循环的机制性见解,并为控制微生物污染的城市排水基础设施优化提供了信息.
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