氧的亲和力和光强度诱导了强大的去除和脆弱的氨去除在非空气化的细菌-藻类系统中
Jie Fan1, Wu Yuan1, Xujie Zhang1
1College of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China.
The Science of the total environment
|December 1, 2023
概括
这项研究探讨了利用细菌-藻类系统的光合作用来提供氧气,发现强大的去除但可变的氨-去除. 藻类的氧气生产支持有氧过程,尽管酸盐氧化细菌被抑制.
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
- 光合作用应用 光合作用应用
背景情况:
- 废水处理中的机械通风耗费大量能源.
- 藻类的光合作用氧气生产提供了一个可持续的替代方案.
- 了解氧气动力学和在不同的光线下去除营养素至关重要.
研究的目的:
- 调查非空气化细菌-藻类系统中的氧气供应和营养物质去除效率.
- 在低强度和高强度光线下评估系统性能.
- 为了阐明微生物对光和氧气可用性的反应.
主要方法:
- 在受控的低光和高光条件下对细菌-藻类系统的实验研究.
- 测量氧气水平,和氨-去除率.
- 微生物社区分析侧重于关键的功能群体,如氨氧化细菌 (AOB) 和脱聚酸盐积聚生物 (DPAO).
主要成果:
- 观察到高且稳定的去除 (97%LL,95%HL).
- 氨-去除发生了显著波动 (66%LL,84%HL).
- 藻类的氧气生产支持有氧阶段,但酸盐氧化细菌 (NOB) 被抑制,导致57%的酸盐积累. 菌和菌Leptolyngbya是去除的关键.
结论:
- 非空气化的细菌-藻类系统显示出有效去除的潜力.
- 光强度和氧气动力学影响去除途径和微生物社区结构.
- 部分化加上特定细菌 (AOB Ellin6067,DPAO Flavobacteria) 的非化去除是一个有希望的结果.
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