在C/N高度下的SNAD系统中悬浮污泥和生物膜的反应:微生物活动,转换流和分子生态网络
Junyu Liu1, Meina Hu1, Mei Hu1
1Beijing Engineering Research Center of Environmental Material for Water Purification, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
The Science of the total environment
|September 19, 2024
概括
同时的部分化,亚纳摩克斯和脱 (SNAD) 过程有效地去除. 最佳性能发生在C/N比率为2.0,更高的比率抑制关键细菌并降低效率.
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:
- 同时部分化,亚纳摩克斯和脱 (SNAD) 过程是废水中提取的先进方法.
- 了解碳比 (C/N) 对SNAD性能的影响对于优化处理效率至关重要.
研究的目的:
- 在不同的C/N条件下使用聚氨海绵包装来研究SNAD主流的除过程.
- 分析不同C/N比对去除效率,微生物群落结构和相互作用的影响.
主要方法:
- 在废水处理系统中使用聚氨海绵包装实施SNAD过程.
- 碳与 (C/N) 比率的系统变化,以评估其影响.
- 对去除效率和微生物群体动态的分析,包括亚纳莫克斯细菌的数量和活动.
- 在不同的C/N条件下,在悬浮污泥与生物膜中的微生物相互作用的比较研究.
主要成果:
- 在2.0的C/N比率下,获得了最高的去除效率.
- 高的C/N比率 (3.5) 显著抑制了去除效率和阿纳莫克斯细菌 (Candidatus_Kuenenia) 的活性/丰度.
- 与悬浮污泥相比,生物膜系统显示出更高的anammox细菌丰度和活性,改善了网络稳定性,以及高效的质量转移,特别是在更高的C/N比率下.
结论:
- 用聚氨海绵包装去除SNAD主流的最佳C/N比为2.0.
- 高C/N比对SNAD表现产生负面影响,因为它会抑制亚纳莫克斯细菌并改变微生物相互作用.
- 生物膜的形成提高了SNAD过程的效率和稳定性,anammox细菌在这些系统中充当关键物种,为市政废水处理应用提供了宝贵的见解.
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