在不同的条件下培养的耐盐颗粒污泥如何进行和的去除?
Mengfei Wang1, Junguo He2, Ruimiao Zhang1
1School of Environment, Harbin Institute of Technology, Harbin, 150090, China.
Environmental research
|July 17, 2025
概括
耐盐有氧颗粒污泥 (AGS) 有效地从废水中去除和. 不同的盐度水平和适应方法影响了清除过程和微生物群落,为废水处理应用提供了洞察力.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 水处理工程水处理工程
背景情况:
- 有氧颗粒污泥 (AGS) 技术在处理盐废水方面表现有前途.
- 对耐盐AGS中和去除机制的有限理解阻碍了技术进步.
研究的目的:
- 在不同的盐度和适应方法下,研究AGS中和去除过程和机制.
- 为了确定参与这些过程的功能性细菌.
主要方法:
- 使用不同的适应策略培育耐盐的AGS.
- 对和去除效率的分析.
- 微生物社区分析以确定功能细菌的分布.
主要成果:
- 氨氧化细菌 (AOB) 集中在外部,酸盐氧化细菌 (NOB) 在颗粒中.
- 在0-1%盐度下观察到同时化和脱化 (SND).
- 吸附和部分化/脱 (PND) 在3%的盐度下发生.
- 通过Zoogloea,Enterobacter,Thauera和Rhodobacter进行异质化是去除氨的关键.
- 细胞外聚合物物质 (EPS) 吸附和生物去除 (BPR) 是PAO/DPAO的主要去除方法.
- 脱化去除发生在0-1%盐度下,而Thauera是3%盐度下唯一的BPR微生物.
结论:
- 盐度显著影响AGS性能和微生物社区结构的和去除.
- 了解这些机制为优化盐水废水处理中的AGS提供了关键数据.
- 这些发现支持AGS技术在工业盐水废水中的更广泛应用和发展.
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