Comparison of the performance of Anammox process in the treatment of wastewater from different antibiotics

被引：0

作者：

Zhang X. ^{[1
]}

Ma B. ^{[1
]}

Zhang H. ^{[1
]}

Wei D. ^{[1
]}

Zhang H. ^{[1
]}

Hu H. ^{[1
]}

Zhao Z. ^{[1
]}

机构：

[1] School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou

来源：

Huagong Xuebao/CIESC Journal | 2021年 / 72卷 / 11期

关键词：

Anaerobic; Biochemical engineering; Bioreactors; Environment; Oxidation; Wastewater;

D O I：

10.11949/0438-1157.20210634

中图分类号：

学科分类号：

摘要：

Antibiotics are widely used in worldwide, and different antibiotics have been detected in many kinds of wastewater. In this study, take sulfamethoxazole (SMX) and oxytetracycline (OTC) as representatives to investigate their short-term (6 h) and long-term effects (22 d) on the Anammox process. The results showed that in the experimental concentrations (1, 10, 100, 1000 μg/L), the short-term inhibition threshold of OTC is 10 μg/L, and the long-term threshold is 1000 μg/L, which decreased the Anammox rate from 14.6 to 12.0 and 11.1 mg/(h·g SS), respectively. SMX in 1-1000 μg/L has no significant effect on Anammox biofilm. The Anammox biofilm responds more quickly to SMX than to OTC. It can secrete a large amount of extracellular polymer to resist SMX, and at the same time can induce denitrifying bacteria to degrade SMX. OTC increased the microbial diversity of Anammox biofilms, while SMX increased the abundance of dominant microorganisms and improved the relative abundance of denitrifying bacteria to 14.9% from 0.01%. Therefore, Anammox can treat wastewater containing trace amounts of SMX, and long-term domestication is required when treating wastewater containing OTC. © 2021, Editorial Board of CIESC Journal. All right reserved.

引用

页码：5810 / 5819

页数：9

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