间歇性夜间照明增强了合成废水处理中的微藻-细菌颗粒污泥
Changqing Chen1, Linyang Zhang1, Can Tong1
1Department of Water and Wastewater Engineering, School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, China.
Journal of environmental management
|October 25, 2025
概括
间歇性夜间照明可以促进微藻细菌颗粒污泥 (MBGS) 废水处理. 这一战略增强了污染物去除和微生物活动,使得可持续的24/7运行成为可能.
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:
- 微藻-细菌颗粒污泥 (MBGS) 系统在照明下提供高效的废水处理,低能耗.
- 由于缺乏光线,MBGS的性能在夜间下降,影响溶解氧和微生物活动.
研究的目的:
- 评估间歇性夜间照明策略,以提高合成废水处理的MBGS性能.
- 调查夜间补充照明对污染物去除和微生物群落动态在MBGS中的影响.
主要方法:
- 在夜间实施间歇性LED照明计划 (12h-light/3h-dark/6h-light/3h-dark).
- 对化学氧气需求,氨和酸盐的去除效率的分析.
- 超基因组分析以评估微生物社区结构和功能基因潜力的变化.
主要成果:
- 额外的夜间照明显著提高了去除效率:COD 7.5%,氨 27.7%,酸盐 27.1%.
- 甲基因组分析显示,污染物降解的遗传潜力增加,并增强了关键代谢途径 (例如,GLU,PPA).
- 微生物社区结构发生了转变,菌和菌菌增加,蛋白菌减少,表明转向有氧途径.
结论:
- 间歇性夜间照明是一种有效的策略,可以维持和提高MBGS的全天候性能.
- 照明策略促进有益的微生物转移,并增强有效清除废水污染物的遗传能力.
- 这种方法支持开发可持续,节能和连续的废水处理系统.
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