评估有氧颗粒性能与自聚聚细菌Pseudomonas stutzeri菌株XL-2生物增强,具有异构化-有氧脱能力
Jinyi Wang1, Binbin Ran1, Yongxue Peng1
1The Key Laboratory of Eco-Environment in Three Gorges Reservoir Region, Chongqing University, Chongqing 400045, PR China; College of Environment and Ecology, Chongqing University, Chongqing 400045, PR China.
Bioresource technology
|May 22, 2024
概括
添加Pseudomonas菌株XL-2显著加快了微生物颗粒的形成,通过改进的污泥聚合和同时化-有氧脱过程,增强了去除.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理技术 废水处理技术
- 生物技术是生物技术.
背景情况:
- 废水处理依赖于微生物群落来有效地去除.
- 颗粒化是改善污泥沉降能力和处理效率的关键过程.
- 提高粒度和同时去除是废水工程中的一个关键挑战.
研究的目的:
- 评估 Pseudomonas 菌株 XL-2 的自聚变菌株在促进微生物颗粒化的有效性.
- 通过同时化和有氧脱,评估XL-2菌株对去除的影响.
- 研究XL-2菌株影响污泥特性和微生物群落结构的机制.
主要方法:
- 补充 Pseudomonas 菌株 XL-2 试验废水处理系统 (R1) 与对照 (R2) 相比.
- 监测颗粒形成,污泥水性和细胞外聚合物质 (EPS) 生产.
- 分析去除效率,包括同时化和有氧脱.
- 微生物社区分析使用16S rRNA测序来识别细菌群体的变化.
主要成果:
- 与对照组相比,添加XL-2菌株加速了12天的颗粒形成.
- 补充XL-2菌株显著增加了细胞外聚合物物质 (EPS) 的分泌,特别是蛋白质,增强了污泥的疏水性和聚合性.
- 同时化和有氧脱效率在XL-2菌株的存在下得到改善.
- 微生物分析显示,XL-2菌株的繁殖成功,并丰富了诸如Flavobacterium和Paracoccus等有益的属.
结论:
- Pseudomonas 菌株 XL-2 有效地促进微生物颗粒和增强废水处理中的去除.
- 该机制涉及增加EPS产量,改善污泥疏水性,以及微生物群落结构的有利转变.
- 菌株XL-2提供了一个有前途的生物增强策略,用于优化有氧颗粒和去除过程.
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