在用城市废水供给的试点规模微藻赛道中探索微生物生长动态:了解操作变量的影响
Rebecca Nordio1, Solaima Belachqer-El Attar1, Elisa Clagnan2
1Department of Chemical Engineering, University of Almeria, 04120, Almería, Spain; CIESOL Solar Energy Research Centre, Joint Centre University of Almería-CIEMAT, 04120, Almería, Spain.
Journal of environmental management
|September 7, 2024
概括
微藻污水处理提高了微生物多样性和营养物质回收. 优化培养高度和溶解氧气可以提高系统性能和消毒能力.
科学领域:
- 环境微生物学 环境微生物学
- 废水工程 废水工程
- 生物技术是生物技术.
背景情况:
- 微藻种植是污水处理,营养回收和生物质生成的可持续方法.
- 操作参数显著影响微藻生物质的生产力和相关的微生物群落结构.
- 优化赛道反应堆条件对于具有成本效益和高效的废水整治至关重要.
研究的目的:
- 在试点规模的基于微藻的废水处理系统中描述微生物社区的动态.
- 评估不同操作条件 (pH,溶氧控制,培养高度) 对微生物群体的影响.
- 评估系统的营养去除效率和消毒性能.
主要方法:
- 使用未经处理的城市废水在80平方米的试点级赛道反应堆中培养微藻.
- 操作操作参数:pH值,溶氧控制策略 (开启,PI,基于事件,没有控制) 和培养高度.
- 微生物社区分析,包括微藻,细菌和真菌种群,以及物理化学参数和消毒效率的监测.
主要成果:
- 增加培养高度显著增强了微藻和细菌的多样性.
- pH,溶解氧和培养高度极大地影响了化细菌的活动和积累.
- 该系统证明了有效的消毒,实现了大肠杆菌的平均逻辑减值 (LRV) 3.36和Clostridium perfringens的2.57.
- 在微藻培养物中鉴定出了Chytridiomycota,Ascomycota真菌和紫色光合作用细菌.
结论:
- 微藻污水处理系统是复杂的生态系统,其操作参数决定了微生物群落的结构和功能.
- 培养高度是促进生物多样性和潜在提高处理效率的关键因素.
- 该系统显示了同时进行营养回收,生物质生产和在城市废水处理中减少病原体的潜力.
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