对硫化物增强化与有氧颗粒性污泥的新见解
Manyu Qin1, Mingjun Li1, Chaowen Xie1
1School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215000, China.
Environmental research
|March 11, 2026
概括
硫化物稳定有氧颗粒污泥 (AGS) 系统中的化,在没有氨控制的情况下实现高效率. 这项研究表明,硫化物增强了稳定性和沉性,使废水能有效地去除气.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 废水处理工程 废水处理工程
背景情况:
- 化是有效去除的关键,但控制氧化细菌 (NOB) 是一个挑战.
- 硫化物在连续流动有氧颗粒污泥 (AGS) 系统中的化作用尚不清楚.
- 目前的方法通常依赖于基于氨的抑制,这可能不是最佳的.
研究的目的:
- 研究硫化物的长期可行性和对连续流动AGS反应堆中化物的影响.
- 探索硫化物,微生物分层和化性能之间的协同作用.
- 挑战基于氨的NOB抑制的必要性.
主要方法:
- 在不同硫化物负载 (20-80毫克S/L) 下,在连续流动AGS反应器中实验性证明化.
- 监测酸盐积累效率 (NAE) 和氨氧化率 (AOR).
- 微生物群体分析和污泥结构完整性和沉性质的评估.
主要成果:
- 通过硫化物实现了持续的高化率 (NAE>85%,AOR>1.46 kg N/(m3·d),没有残留氨控制.
- 硫化物直接抑制了NOB和富含硫化物氧化细菌 (SOB),这加剧了氧气限制并进一步限制了NOB.
- AGS结构促进了SOB和氨氧化细菌 (AOB) 之间的空间接近,先前的硫化物暴露增强了AOB的弹性.
结论:
- 硫化物作为稳定剂而不是破坏剂,用于AGS系统中的化.
- 硫化物增强了AGS的结构完整性和沉功能,促进了稳定性.
- 这种方法可以通过促进与anammox或脱的整合,从含硫化物废水中高能效地去除.
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