用太阳能LED夜间光补充优化微藻细菌颗粒污泥的性能,以改善废水处理
Can Tong1, Lingyang Zhang1, Changqing Chen1
1Department of Water and Wastewater Engineering, School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China.
Bioresource technology
|August 24, 2025
概括
在黑暗阶段的补充照明可以提高微藻细菌颗粒污泥 (MBGS) 的性能. 这种废水处理策略提高了污染物的清除,降低了运营成本.
科学领域:
- 环境微生物学
- 污水处理工程
- 生物技术
背景情况:
- 微藻细菌颗粒污泥 (MBGS) 系统因光合作用停止而面临夜间代谢衰退,导致污染物积累.
- 日间循环限制了MBGS在废水处理中的效率.
研究的目的:
- 调查在黑暗阶段额外的太阳能LED照明对MBGS性能的影响.
- 提高MBGS系统的代谢活动和污染物清除效率.
主要方法:
- 在黑暗阶段实施太阳能LED补充照明.
- 功能性基因丰度 (glk,scrK,glnA,ppa,atpA) 和微生物群体结构的分析.
- 对超氧化物脱酶,乳酸脱酶和ATPase活性进行生物化学测试.
主要成果:
- 关键功能基因的显著增加和蛋白质细菌的优势 (52.6%至89.3%).
- 在实际废水中提高了清除效率:COD20.4%,TN48.2%,TP55.2%.
- 增强抗氧化防御,增强糖解代谢和持续的能量流动,稳定颗粒功能.
结论:
- 夜间照明补充是克服MBGS代谢下降的可行策略.
- 这种方法显著提高了废水处理效率和微生物群体的稳定性.
- 太阳能MBGS为传统活性污泥工艺提供了可持续和成本效益的替代方案,其潜在成本降低了31%.
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