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氧化还原媒介叶绿素加速低温生物脱化,以细胞外聚合物的反应和微生物社区组成的变化为反应

Xiao-Yan Fan¹, Ya-Bao Wang¹, Xing-Li¹

¹Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, PR China.

The Science of the total environment

|March 27, 2024

概括

氧化还原介质可以增强低温废水脱. 叶绿素通过促进有益的微生物变化和促进营养减少和碳代谢的基因表达,显著提高了基因代谢率.

科学领域:

环境科学环境科学
微生物学微生物学
生物技术是生物技术.

背景情况:

低温阻碍了活性污泥系统中的废水脱.
反氧调解剂 (RMs) 可以减轻这些温度限制.

研究的目的:

为了比较四种RM (叶绿素,NQS,酸, рибофлавин) 在增强低温脱过程中的有效性.
研究RMS对细胞外聚合物 (EPS),微生物群落和代谢潜力的影响.

主要方法:

活性污泥系统使用不同度的叶绿素 (Chl),1,2-纳夫托金-4-硫酸 (NQS),酸 (HA) 和 рибофлавин (RF) 进行了处理.
分析了脱率,EPS组成,微生物群落结构和基因表达 (酸盐/酸盐减少,碳代谢).

主要成果:

叶绿素在脱率上表现出最显著的增加 (4.12倍),其次是NQS (2.62倍) 和HA (1.35倍);RF是抑制性的.
叶绿素促进了EPS中的特定蛋白质分泌,改变了EPS的结合状态,丰富了Flavobacterium,并提高了关键的脱和碳代谢基因的调节.
所有测试的RM都影响了微生物社区结构,有条件的稀有或丰富的种类扮演着关键的交互作用.

结论:

叶绿素是一种高效的氧化还原媒介,可增强低温活性污泥脱.
RMs调节EPS特性和微生物群落,影响营养物质的去除和碳利用效率.
了解RM机制为优化在寒冷条件下的废水处理过程提供了洞察力.

关键词:

脱化过程中的脱.细胞外聚合物细胞外聚合物低温低温的低温是什么意思微生物社区的组成微生物社区的组成降氧调解剂的调解剂

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