元素硫对无氧氨氧化的作用:性能和机制
Jing Zhang1, Lurong Wang2, Haitao Li2
1Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding, 071002, PR China; Biology institute, Hebei academy of science, Shijiazhuang, 050081, PR China.
Environmental research
|August 18, 2024
概括
元素硫的添加增强了废水中的去除,通过刺激Anammox和硫的自无化. 这种联合过程,S0SAD-A,显著提高了去除效率和微生物活动.
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
- 生物地质化学循环是什么
背景情况:
- 生物除对于废水处理至关重要.
- 硫自脱和Anammox之间的协同效应是已知的,但不太清楚.
- 组合和硫代谢的特定触发因素尚不清楚.
研究的目的:
- 为了研究元素硫介导自脱和Anammox (S0SAD-A) 系统的性能和机制.
- 为了确定和硫联合代谢的触发点.
- 为了阐明微生物社区结构和关键的基因.
主要方法:
- 在Anammox系统中引入元素硫 (S0).
- 监测去除效率和/亚酸盐度.
- 超基因组测序用于分析微生物群落和功能基因.
主要成果:
- 在S0SAD-A系统中,去除的效率达到了95.99%,显著高于仅使用Anammox系统 (77.22%) 的150mg/LNH4+-N.
- 添加S0加快了NH4+-N的消耗,并导致过渡性酸盐峰值,表明合脱和Anammox.
- 甲基因组分析显示,的丰富性增加了. 布罗卡迪亚和刺激的阿纳莫克斯基因 (hao,hzsA,hzsC),其中罗多西克拉属成员主导硫代谢基因.
结论:
- 元素硫的添加有效地刺激了Anammox和硫自无化之间的协同相互作用.
- 与单独使用Anammox相比,S0SAD-A过程显示出更高的去除性能.
- Rhodocyclaceae在S0SAD-A系统中的硫代谢中发挥着关键作用,突出了其在合和硫循环中的重要性.
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