通过xylamine刺激进行部分脱/anammox过程的快速启动和代谢演变:去除性能,生物膜特征和微生物群落
Chengkun Kao1, Qiong Zhang1, Jianwei Li1
1National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
Bioresource technology
|December 12, 2024
概括
添加氧胺 (NH2OH) 通过促进酸盐积累和微生物群落转移,增强了部分脱/亚纳摩克斯 (PDA) 系统中的去除. 然而,过度的NH2OH抑制了anammox细菌,凸显了在废水处理中需要控制应用的必要性.
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
- 生物地质化学循环的过程
背景情况:
- 在废水处理中去除对于环境保护至关重要.
- 部分脱/亚纳摩克斯 (PDA) 工艺提供了高效的去除.
- 氧胺 (NH2OH) 已经显示出增强去除的潜力.
研究的目的:
- 研究氧胺 (NH2OH) 对部分脱/亚纳摩克斯 (PDA) 生物系统的影响.
- 为了确定NH2OH的最佳度,以提高去除效果.
- 了解在NH2OH暴露下微生物群体的动态.
主要方法:
- 对PDA生物系统添加NH2OH的实验研究.
- 监测去除效率和酸盐积累的情况.
- 使用像CLSM-FISH这样的技术分析微生物社区结构.
主要成果:
- 添加NH2OH (≤10 mg N/L) 增加了通过酸盐积累的18.1%±4.3%的去除效率.
- 长期的NH2OH暴露丰富了Thauera和Candidatus Brocadia,有利于PDA合.
- 在超过15毫克N/L的NH2OH度下,anammox细菌被抑制.
结论:
- 控制添加NH2OH可以通过促进脱和anammox细菌之间的协同作用来增强PDA系统中的去除.
- 作为优化废水处理过程的添加剂,NH2OH显示出前景.
- 了解高NH2OH度的抑制作用对于工艺稳定至关重要.
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