Characteristics of Tetracycline Degradation Coupled Simultaneous Nitrification-Denitrification and Phosphorus Removal in Aquaculture Wastewater

IF 2.2 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Geomicrobiology Journal Pub Date : 2023-03-06 DOI:10.1080/01490451.2023.2182929

Sicheng Shao, Minghui Wang, Jinfeng Zhong, Xiangwei Wu

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引用次数: 1

Abstract

Abstract Although residual tetracycline, NH4 +-N, and P in aquaculture wastewater have been frequently detected, their simultaneous removal has received little attention. The simultaneous and efficient removal of tetracycline, NH4 +-N, COD, and P in aquaculture wastewater was achieved with a laboratory-scale moving bed biofilm reactor (MBBR) under different influent C/N ratios. The results suggested that tetracycline could be degraded efficiently without using an additional organic carbon source. Most of the tetracycline (>80%), NH4 +-N (>73%), TN (>68%), TP (>59%), and COD (>78%) were synchronously removed under the higher C/N ratios. The electron transport system activity (ETSA), dissolved organic matter (DOM), and extracellular polymeric substances (EPS) were evaluated for biofilm performance during aquaculture wastewater remediation. The results indicated that the protein (PN) and polysaccharide (PS) concentrations, and fluorescence intensities were significantly different because the influent C/N ratios changed the biofilm activity. The ETSA values were lowest when tetracycline was the sole carbon source, which suggested that tetracycline affected the nitrification activity of biofilms. Sphingobacteriia, Betaproteobacteria, and Alphaproteobacteria were identified as the dominant bacterial classes. This study provides a new strategy for the removal of tetracycline and nutrients from aquaculture wastewater.

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四环素降解-同时硝化-反硝化-除磷特性研究

摘要尽管水产养殖废水中残留的四环素、NH4+-N和磷经常被检测到，但它们的同时去除却很少受到关注。采用实验室规模的移动床生物膜反应器（MBBR），在不同进水C/N比下，实现了对养殖废水中四环素、NH4+-N、COD和P的同时高效去除。结果表明，四环素可以在不使用额外的有机碳源的情况下被有效降解。在较高的C/N比下，大多数四环素（>80%）、NH4+-N（>73%）、TN（>68%）、TP（>59%）和COD（>78%）被同步去除。评估了电子传输系统活性（ETSA）、溶解有机物（DOM）和细胞外聚合物（EPS）在水产养殖废水修复过程中的生物膜性能。结果表明，由于进水C/N比改变了生物膜的活性，蛋白质（PN）和多糖（PS）的浓度以及荧光强度存在显著差异。当四环素是唯一的碳源时，ETSA值最低，这表明四环素影响生物膜的硝化活性。鞘氨醇菌、β-变形菌和α-变形菌被确定为优势菌类。本研究为从养殖废水中去除四环素和营养物质提供了一种新的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geomicrobiology Journal 环境科学-地球科学综合

CiteScore

4.80

自引率

8.70%

发文量

审稿时长

3.3 months

期刊介绍： Geomicrobiology Journal is a unified vehicle for research and review articles in geomicrobiology and microbial biogeochemistry. One or two special issues devoted to specific geomicrobiological topics are published each year. General articles deal with microbial transformations of geologically important minerals and elements, including those that occur in marine and freshwater environments, soils, mineral deposits and rock formations, and the environmental biogeochemical impact of these transformations. In this context, the functions of Bacteria and Archaea, yeasts, filamentous fungi, micro-algae, protists, and their viruses as geochemical agents are examined. Articles may stress the nature of specific geologically important microorganisms and their activities, or the environmental and geological consequences of geomicrobiological activity. The Journal covers an array of topics such as: microbial weathering; microbial roles in the formation and degradation of specific minerals; mineralization of organic matter; petroleum microbiology; subsurface microbiology; biofilm form and function, and other interfacial phenomena of geological importance; biogeochemical cycling of elements; isotopic fractionation; paleomicrobiology. Applied topics such as bioleaching microbiology, geomicrobiological prospecting, and groundwater pollution microbiology are addressed. New methods and techniques applied in geomicrobiological studies are also considered.