下流海绵生物膜反应器用于污染原水处理:性能优化,动力学和微生物社区
Jia Xing Loi1, Kazuaki Syutsubo2, Mohamad Fairus Rabuni1
1Sustainable Process Engineering Centre, Department of Chemical Engineering, Faculty of Engineering, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
Chemosphere
|April 28, 2024
概括
一种新的绿色下流海绵生物膜 (DSB) 技术有效地从原水中去除高水平. 该系统实现了超过95%的氨和化学氧需求去除,具有短的液压保留时间,确保发展中国家的安全用水.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 微生物生态学 微生物生态学
背景情况:
- 原水中的氨含量升高导致发展中国家经常出现停水.
- 传统的净化厂在化速率的限制下扎,尤其是在寡量化条件下.
- 有需要的水处理解决方案与短的液压保留时间 (HRT).
研究的目的:
- 评估绿色下流海绵生物膜 (DSB) 技术对污染原水处理的性能.
- 在短时间的HRT条件下评估DSB反应堆的有效性.
- 研究微生物群落结构及其在氨去除中的作用.
主要方法:
- 两个DSB反应堆 (DSB-1和DSB-2) 在360天内运行,的度各不相同.
- 在不同的短HRT (60,30,20和15分钟) 下监测性能.
- 16S rRNA测序用于分析化细菌种群.
主要成果:
- 稳定去除氨 (NH4+-N) 和化学氧气需求 (≥95%) 在15分钟的HRT中实现.
- 在反应堆内观察到的有机去除和化的垂直分离.
- 完全氧化成酸盐 (NO3--N) 发生在没有外部通风的情况下.
- 在较低的氨荷载下,在DSB-2中富含高氨亲和度的comammox细菌.
结论:
- 该DSB系统展示了高液压速率的能力,可以在原水处理中有效地去除氨.
- 这项技术可以整合到现有流程中,以确保发展中国家的安全供水.
- 微生物分层和特定细菌的丰富有助于系统的有效性.
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