生物除磷过程中四环素和铜离子对微生物的综合影响

IF 2.7 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Jian Huang, Junshuai Xu, Hua Zhang, Jun Liu, Chunhua He
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引用次数: 0

摘要

四环素和铜离子是废水中常见的污染物,混合污染物对废水生物处理中微生物的影响研究较少。为了揭示生物除磷过程中四环素和铜离子混合污染物对微生物的影响,采用直接等分射线法设计了四环素和铜离子的三种配比。研究了微生物群落的相对丰度和多样性,并通过微生物学方法揭示了微生物之间的相互作用。结果表明,对于三种不同的比例,随着四环素-铜离子浓度和反应时间的增加,对特定磷吸收率的抑制作用更加显著。微生物群落随着四环素比例的增加而减少。随着四环素比例的增加,醋酸杆菌的相对丰度降低,而在混合物浓度较低的条件下,金合欢杆菌的相对丰度较高。在三种不同的比例下,微生物之间的良性相互作用和共生关系占主导地位。然而,随着四环素比例的增加,微生物群落结构从磷酸盐积累菌转向糖原积累菌和反硝化菌。这项研究可为混合污染物对微生物的影响和污水处理机制提供参考。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Combined Effects of Tetracycline and Copper Ion on Microorganisms During the Biological Phosphorus Removal.

Combined Effects of Tetracycline and Copper Ion on Microorganisms During the Biological Phosphorus Removal.

Tetracycline and copper ion are common pollutants in wastewater, and the effects of mixed pollutants on microorganisms in wastewater biological treatment have been less studied. In order to reveal the effects of mixed pollutants of tetracycline and copper ion on the microorganisms during the biological phosphorus removal, three ratios of tetracycline and copper ions were designed by the direct equipartition ray method. The relative abundance and diversity of microbial community were investigated, and the microbial interactions were revealed through microbiological methods. The results demonstrated that, for three different ratios, the inhibitory effect of specific phosphorus uptake rate became more significant with the increase of the tetracycline-copper ions concentration and the reaction time. The microbial community decreased with the increase of the proportion of tetracycline in different ratios. The relative abundance of Acinetobacter decreased with the increase of the proportion of tetracycline, while the relative abundance of Ca.Competibacter was higher under the conditions of low mixtures concentrations. Positive interactions and symbiotic relationships among microorganisms were predominant for three different ratios. However, as the proportion of tetracycline increased, the community structure of microorganisms shifted from phosphate-accumulating organisms to glycogen accumulating organisms and denitrifying bacteria. This study can provide a reference for the effect of mixed pollutants on microorganisms and the mechanism of wastewater treatment.

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来源期刊
CiteScore
5.60
自引率
3.70%
发文量
230
审稿时长
1.7 months
期刊介绍: The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.
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