丝状膨胀的负面作用及其在anammox过程中的消除
Ziqing Wei1, Dong Li1, Shuai Li1
1Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Bioresource technology
|January 18, 2024
概括
丝状积聚物通过减少质量转移和生物质保留来抑制anammox系统中的去除. 增加液压切割应力可以通过改善质量转移和促进颗粒化来恢复anammox功能.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理工程 废水处理工程
背景情况:
- 丝状积压 (FB) 是废水处理系统中常见的运行问题.
- 亚纳莫克斯 (无氧氨氧化) 过程对于去除至关重要,但对操作干扰很敏感.
研究的目的:
- 为了研究细丝膨胀导致anammox失败的机制.
- 确定减轻丝状积聚对anammox系统的负面影响的策略.
主要方法:
- 模拟颗粒型anammox反应堆中中度和过度的丝状积聚水平.
- 分析去除效率,生物质保留和颗粒特征.
- 评估增加的液压切割应力对系统性能的影响.
主要成果:
- 丝状膨胀显著抑制了去除和生物质保留.
- 由于丝状表面的低外部质量转移被确定为anammox失败的主要触发因素.
- 增加的液压切割应力有效抵消了FB的负面影响,促进了颗粒化和恢复了去除.
结论:
- 丝状膨胀通过减少质量转移和生物质冲洗来破坏anammox过程.
- 增强液压切割应力是一种可行的策略,以管理丝状膨胀,并确保稳定的运行.
- 机械调节是必要的,以保持系统稳定性在丝状膨胀条件下.
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