阴离子对重力驱动膜系统中的生物膜的影响:过性能和机制调查
Rui Chen1, Daliang Xu2, Jing Zhao2
1State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China.
Water research
|March 3, 2024
概括
(Ca2+) 通过促进松散的生物膜和有效的污染物去除,增强了引力驱动膜 (GDM) 水处理. (Na+) 通过形成密集的生物膜来阻碍GDM的性能,影响水流和污染物去除.
科学领域:
- 环境科学 环境科学
- 水处理技术水处理技术
- 膜科学 膜科学 膜科学
背景情况:
- 重力驱动膜 (GDM) 系统提供节能水处理.
- 阴离子对GDM生物膜特性和性能的影响仍未得到充分研究.
研究的目的:
- 研究 (Ca2+) 和 (Na+) 对生物膜特性和GDM性能的影响.
- 阐明在GDM系统中介于阴离子的污染和污染物去除背后的机制.
主要方法:
- 使用GDM系统进行实验研究,对Ca2+和Na+进行了控制的添加.
- 对生物膜特性 (生物质,蛋白质,多糖,形态,粗度,多孔性) 的分析.
- 微生物社区分析 (细菌丰富度,ATP度,更高的生物丰富度) 和计算模拟.
主要成果:
- 2+通过培养异质,松散的生物膜,增加粗性和多孔性,改善了稳定的流量和污染物去除.
- Na+ 减少了流量和污染物去除,这是由于同质,密集的生物膜减少了多孔性和粗性.
- 2+增加了细菌丰富度和ATP度,支持有效的污染物去除,而Na+则降低了它们.
- 阴离子诱导的桥梁效应 (Ca2+) 和脱水 (Na+) 影响了叶片的形成和聚合.
结论:
- 微生物学特征和污染物分子相互作用是决定GDM性能差异的关键因素.
- 2+通过促进有益的生物膜结构和增强污染物去除,对GDM系统产生积极影响.
- Na+对GDM系统产生负面影响,突出显示了在水处理应用中阴离子选择的重要性.
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