基于Mn2+催化臭氧化条件的现场污泥减少:可行性研究和微生物机制
Haozhe Huang1, Tingting Wei1, Hui Wang1
1College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Journal of environmental sciences (China)
|October 1, 2023
概括
在臭氧化中添加 (II) 离子 (Mn2+) 显著提高了污泥减少和处理效率. 这种催化过程改善了废水质量和微生物活动,提供了具有成本效益的污泥管理解决方案.
科学领域:
- 环境工程 环境工程
- 水处理 处理水的方法
- 微生物学 微生物学
背景情况:
- 污泥调节效率对于废水处理至关重要.
- 臭氧调节是有效的,但可能昂贵.
- 需要在现场减少污泥的方法来优化流程.
研究的目的:
- 评估Mn2+-催化臭氧化,以提高污泥调节效率.
- 评估2+添加对污泥减少和废水质量的影响.
- 阐明Mn2+催化臭氧化背后的微生物机制.
主要方法:
- 实验室规模的测序批量反应堆与臭氧污泥回收.
- 仅仅使用臭氧调节与O3+Mn2+处理进行比较.
- 分析污泥特性,废水参数,微生物活动和社区结构 (16S rRNA测序).
主要成果:
- 通过O3+Mn2+治疗,获得了39.4%的MLSS降低,而仅用O3治疗则降低了15.3%.
- 改善了COD,NH4+-N,TN和TP的去除,其中O3+Mn2+.
- 增强脱酶活动,利用碳源,以及大量的关键细菌 (Defluviicoccus,Ferruginibacter).
结论:
- 2+催化臭氧化是一种非常有效的现场污泥减少策略.
- 这种方法提高了处理性能,并减少了污泥产量.
- 该过程为污泥管理提供了具有成本效益的方法,并为微生物作用提供了理论支持.
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