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无氧氨氧化颗粒污泥的多样性和动态反应

Jiahong Ye¹, Xiang Li², Yan Yuan¹

¹School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.

Journal of environmental sciences (China)

|December 1, 2024

概括

红色和白色的无氧氨氧化颗粒污泥 (Anammox) 在结构和微生物群落上有所不同. 白色AnGS,尽管低heme c,显示复杂的微生物对脱的贡献,为Anammox工程提供了新的见解.

科学领域:

环境微生物学环境微生物学
生物地质化学循环的过程
废水处理废水处理

背景情况:

无氧氨氧化颗粒污泥 (AnGS) 的颜色与活性有关,但AnGS特性和性能的长期变化尚不清楚.
来自十年前系统的AnGS呈现为红色或白色,具有明显的物理,社区和脱特性.

研究的目的:

研究AnGS颜色 (红色与白色),物理结构,微生物群落和脱性能之间的关系.
为了评估血度作为Anammox活性指标的适用性.

主要方法:

从长期操作系统中对红色和白色AnGS进行比较分析.
测量不同颗粒大小的特定Anammox活性 (SAA).
细胞外聚合物质,细胞内铁和血度的表征.
使用16S rRNA基因测序进行微生物社区结构分析.

主要成果:

特定的Anammox活性 (SAA) 通常随着颗粒大小的增加而增加,在红色AnGS.
白色AnGS的SAA略低于同类红色AnGS,但高于较小的红色颗粒.
与红色AnGS相比,白色AnGS显示出细胞外聚合物物质减少,细胞内铁含量增加,血红素度降低.
白色AnGS拥有更复杂的微生物群落,Candidatus Kuenenia和Candidatus Jettenia有助于脱,而Candidatus Brocadia则主导了红色AnGS.

结论:

血度可能不是Anammox活性的可靠指标.
粒子大小和颜色是影响AnGS特性和性能的关键因素.
白色AnGS,其复杂的微生物社区,为优化Anammox过程和工程应用中的粒子选择提供了一个新的视角.

关键词:

无氧氨氧化颗粒性污泥无氧氨氧化颗粒污泥酶活性的酶活动.这里是Heme Heme.细胞内铁的细胞内铁.微生物多样性的微生物多样性.感官多样性感官多样性

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