通过ASSR介导的污泥产量降低,结合了Nitrospira的确定性丰富与代谢资源分割
Huanzhong Deng1, Junling Yang1, Ruohong Li1
1School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China.
Water research
|November 30, 2025
概括
无氧侧流反应堆 (ASSR) 工艺通过微生物组工程将废水污泥大幅减少43.6%. 这种可持续的废水处理方法优化了微生物资源分配,以减少污泥产量.
科学领域:
- 环境微生物学 环境微生物学
- 废水工程 废水工程
- 生态建模 生态建模
背景情况:
- 无氧侧流反应堆 (ASSR) 是一个有前途的微生物驱动战略,用于可持续的废水处理.
- 在ASSR的污泥产量减少效率背后的生态机制尚未完全理解.
研究的目的:
- 为了阐明微生物驱动的机制,负责降低污泥产量在一个集成的无氧-无氧-氧系统与ASSR (AAO-ASSR/SR).
- 将AAO-ASSR/SR系统的污泥产量和废水质量与传统AAO系统 (AAO/CK) 进行比较.
主要方法:
- 综合多态学 (元基因组学,功能元基因组学) 和生态建模.
- 试点规模的AAO-ASSR/SR和AAO/CK系统的运行.
- 微生物社区结构,稳定性,组装和代谢功能的分析.
主要成果:
- 与AAO/CK相比,AAO-ASSR/SR系统减少了43.6%的污泥产量,同时保持了废水质量.
- 关键机制包括通过合作网络增强的微生物稳定性和决定性组合,有利于像Nitrospira这样的缓慢生长的种群.
- 代谢资源分区从生物质合成转向氨基酸交叉养,由Nitrospira和Novosphingobium驱动.
结论:
- 该研究揭示了ASSR介导的污泥减少的核心微生物驱动机制,涉及微生物稳定性,决定性组合和代谢再分区.
- 这项工作建立了针对低污泥废水处理系统的微生物组工程的设计原则.
- 通过对微生物资源分配的生态优化,这些发现促进了可持续的废水管理.
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