双重生物增量策略,同时缓解生物污染和促进AnMBR中的甲基生成
Yimeng Li1, Huarong Yu2, Haiyang Yang2
1School of Civil Engineering and Transportation, Guangzhou University, Guangzhou, 510006, China; Australian Centre for Water and Environmental Biotechnology (ACWEB, formerly AWMC), The University of Queensland, St. Lucia, Queensland 4072, Australia.
Water research
|November 29, 2024
概括
无氧膜生物反应器 (AnMBR) 的生物增量与双重功能联盟减轻了膜污染,并增强了甲生产. 这种方法改善了废水处理和资源回收.
科学领域:
- 环境生物技术 环境生物技术
- 废水处理工程 废水处理工程
- 微生物生态学 微生物生态学
背景情况:
- 无氧膜生物反应器 (AnMBR) 提供高效的废水处理与资源回收.
- 挑战包括膜污染和次优化甲基生成,阻碍AnMBR的性能.
- 生物增量提出了一种提高AnMBR功能的策略.
研究的目的:
- 开发一个双功能生物增量联盟,同时缓解膜污染和促进AnMBR中的甲生产.
- 在单个财团中调查定数灭 (QQ) 细菌和甲原体的疗效.
- 评估不同碳来源 (N-acyl homoserine lactone和gamma-caprolactone) 对财团发展和业绩的影响.
主要方法:
- 在厌氧和选择性条件下,利用N-类同类素乳 (AHL) 或-类乳 (GCL) 作为唯一的碳来源,丰富微生物联盟.
- 描述QQ活动,甲生产和细胞外聚合物质 (EPS) 抑制.
- 最佳联盟的固定化及其在AnMBR系统中的应用.
- 监测膜污染率和甲产量.
主要成果:
- 与其他联盟相比,无氧GCL丰富的联盟 (An-G) 表现出优越的AHL降解活性,EPS抑制和甲生成能力.
- 富含AHL的联盟 (An-A,F-A) 显示出良好的QQ活性,但由于氨抑制,甲基生成受损.
- 与对照组相比,An-G AnMBR显示膜污染减少了2倍,甲产量增加了18.0%.
结论:
- 用无氧GCL丰富的联合体进行双重生物增量,有效地减轻了AnMBR中的污染,并增强了甲基生成.
- 这一战略对提高AnMBR效率和废水资源/能源回收具有显著的前景.
- 选择碳来源和种植条件对于开发有效的双重功能联盟至关重要.
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