Aerobic granular sludge for swine wastewater treatment: Implications for antibiotic and antibiotic resistance gene elimination

文献类型： 外文期刊

第一作者： Li, Meng-Yuan

作者： Li, Meng-Yuan;Zhang, Run-Dong;He, Liang-Ying;Zhao, Jian-Liang;Liu, You-Sheng;Shi, Yi-Jing;Ying, Guang-Guo;Li, Meng-Yuan;Zhang, Run-Dong;He, Liang-Ying;Zhao, Jian-Liang;Liu, You-Sheng;Shi, Yi-Jing;Ying, Guang-Guo;Liu, Shuang-Shuang;Pei, Cheng-Lei

作者机构：

关键词： Swine wastewater; Antibiotics; Antibiotic resistance genes (ARGs); Biological nitrogen removal; Microbial community

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.0； 五年影响因子：9.5 ）

ISSN： 0960-8524

年卷期： 2024 年 410 卷

页码：

收录情况： SCI

摘要： Swine wastewater (SW) contains high levels of traditional pollutants, antibiotics, and antibiotic resistance genes (ARGs), necessitating effective elimination. Two parallel aerobic granular sludge (AGS) reactors, R1 1 and R2, 2 , were constructed and optimized for treating SW from two pig farms, identified as SW1 1 and SW2. 2 . R2 2 showed higher antibiotic removal efficiency, particularly in the removal of sulfonamides, while fluoroquinolones tended to adsorb onto the sludge. Process optimization by introducing an additional anoxic phase enhanced denitrification and reduced effluent ARG levels, also aiding in the improved removal of fluoroquinolones. The nitrite-oxidizing bacteria (NOB) Nitrospira accumulated after the treatment process, reaching 12.8 % in R1 1 and 14.1 % in R2, 2 , respectively. Mantel's test revealed that pH, NH4+-N, 4 +-N, and Mg significantly affected ARGs and microbial community. Sulfadiazine and sulfamethazine were found to significantly impact ARGs and the microbial communities. This study provides innovative insights into the application of AGS for the treatment of real SW.

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