一个有效的策略来恢复生物膜系统的anammox/内源性部分脱结合连续流的部分化从恶化
Feiyue Hu1, Jing Qin1, Haosen Yang1
1School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China.
Bioresource technology
|September 12, 2025
概括
氧胺在anammox/脱系统中成功恢复了部分化,尽管部分化恶化,但提高了去除效率. 间歇剂量确保稳定的运行.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 部分化 (PN) 对于去除至关重要,但可能不稳定.
- 氧胺是维持PN的潜在解决方案.
- 它在联合anammox/脱生物膜系统 (SAEPD-CFPN) 中的应用尚未研究.
研究的目的:
- 评估氧胺在连续流动生物膜反应堆中恢复PN的可行性.
- 调查PN恶化对SAEPD-CFPN系统的影响.
- 确定最佳的剂量策略,以确保稳定的运行.
主要方法:
- 连续流动生物膜反应堆实验.
- 通过改变影响条件来模拟PN恶化.
- 氧胺补充剂用于PN恢复.
- 微生物群落的元基因组学分析.
- 监测去除效率 (NRE) 和酸盐积累率 (NAR).
主要成果:
- 由于CFPN的恶化,NRE从88.86%降至39.56%,NAR从87.28%降至34.33%.
- 氧胺剂量恢复了NRE到89.90%和NAR到83.83%.
- 在SAEPD系统容忍小PN恶化,但遭受严重的,与低COD相关的长期问题.
- 甲基因组学表明,尼特robacter和NxrAB的抑制有助于PN恢复.
结论:
- 氧胺在SAEPD-CFPN系统中有效恢复PN.
- 生物膜反应器的强度依赖于微生物多样性.
- 间歇性氧胺剂量是稳定的SAEPD-CFPN操作的可持续策略.
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