坦桑尼亚用于市政和工业废水处理的人工湿地细菌群落结构

IF 1.6 Q3 WATER RESOURCES
Gerubin Liberath Msaki, Sadikiel E. Kaale, Karoli Nicholas Njau, Thomas J. Lyimo
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引用次数: 0

摘要

细菌是污水处理系统中最大、最重要的微生物。尽管细菌在污水处理中起着至关重要的作用,但其群落结构和多样性仍然鲜为人知。本研究利用不依赖培养的方法研究了人工湿地(CWs)处理城市和工业废水的细菌多样性和群落结构。对16S rRNA基因细菌群落的V3和V4高变区进行理化参数分析和Illumina高通量测序。结果表明,变形菌门在所有CWs中均占优势门(48.66%)。Gammaproteobacteria纲(27.67%)、Comamonadaceae科(35.79%)和Flavobacterium属(4.35%)在研究的CWs中占主导地位。细菌丰度从入口向出口逐渐增加,出口附近的CWs丰度较高,表现出良好的性能。Shannon-Wiener指数显示,香蕉投资有限公司处理工业废水的CWs物种多样性最高(H = 1.45)。本研究发现,在所研究的CWs中存在显著的细菌多样性,出口丰度和多样性较高的CWs比出口丰度和多样性较低的CWs性能更好。我们建议对每个化粪池进行纵向调查,以确认和确定细菌多样性对化粪池性能模式的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bacterial communities structure in constructed wetlands for municipal and industrial wastewater treatment in Tanzania
Abstract Bacteria are the largest and most essential microorganisms in wastewater treatment systems. Despite the vital role bacteria play in enhancing wastewater treatment, its community structure and diversity remain poorly known. This study elucidated bacterial diversity and community structure in constructed wetlands (CWs) for municipal and industrial wastewater treatment using a culture-independent approach. Analysis of physicochemical parameters and Illumina high-throughput sequencing of V3 and V4 hypervariable regions of 16S rRNA gene bacterial community was performed. The results showed that the Proteobacteria were dominant (48.66%) phyla across all CWs. The Gammaproteobacteria class (27.67%), family Comamonadaceae (35.79) and Genus Flavobacterium (4.35%) were dominant across studied CWs. Bacterial abundance increased from the inlet to the outlet, with CWs having a higher abundance around the outlet, showing a good performance. The Shannon–Wiener index showed the highest species diversity (H = 1.45) in Banana Investment Limited CWs treating industrial wastewater. This study found significant bacterial diversity across studied CWs, with higher abundance and diversity at the outlet indicating better performance than those with low abundance and diversity at the outlet. We recommend a longitudinal investigation at each CWs section to confirm and establish the role of bacterial diversity on the performance pattern of CWs.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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