在去除过程中脱和anammox污泥漂浮的原因和控制策略:机制,策略和前景
Xin Ma1, Xin-Rui Zhang1, Ying-Jun Sun1
1School of Water and Environment, Chang'an University, Xi'an 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education, Chang'an University, Xi'an 710054, China; Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources, Chang'an University, Xi'an 710054, China.
Environmental research
|June 21, 2024
概括
无氧处理系统可能会由于过度的细胞外聚合物物质 (EPS) 而出现污泥漂浮. 这篇评论探讨了EPS的情况.
科学领域:
- 环境微生物学 环境微生物学
- 水处理工程水处理工程
背景情况:
- 无氧生物处理,包括脱和无氧氨氧化 (anammox),对于废水处理至关重要.
- 这些系统中的泥漂浮,特别是在高负载下,妨碍了高效和稳定的运行.
- 过度的细胞外聚合物物质 (EPS) 生产被认为是污泥漂浮的主要原因.
研究的目的:
- 在无氧脱和anammox过程中全面审查泥漂浮背后的机制.
- 分析颗粒型污泥特性,营养转移和微生物群落在污泥漂浮中的变化的作用.
- 总结有效的控制策略,以减轻污泥漂浮的风险.
主要方法:
- 文献综述和综合现有关于无氧污泥漂浮的研究.
- 对影响污泥颗粒结构和浮力因素的分析.
- 研究微生物群落动态及其与EPS生产的关系.
- 对污泥控制的各种操作和处理策略的评估.
主要成果:
- 污泥漂浮与颗粒型污泥的结构变化,营养转移动态的改变以及微生物菌群的变化有关.
- 积聚EPS显著导致污泥颗粒密度降低和浮力增加.
- 特定的微生物群体和代谢途径可能会影响EPS生产和污泥特性.
- 各种控制策略,包括操作调整和化学干预,可以管理污泥漂浮.
结论:
- 了解污泥漂浮的多方面的机制对于稳定的无氧废水处理至关重要.
- 减少污泥颗粒中EPS积累的负面影响是未来研究的一个关键目标.
- 对微生物生态和EPS生物合成途径的进一步研究可以带来改进的污泥管理技术.
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