姚鹏城^1,2,
陈嘉瑜^1,2,
张永明¹,
温东辉³,
陈吕军^1,2
1. 上海师范大学环境与地理科学学院, 上海 200234;
2. 清华大学环境学院, 北京 100084;
3. 北京大学环境科学与工程学院, 北京 100871

作者简介: 姚鹏城(1993-),男,硕士研究生,研究方向为环境微生物学,E-mail:yaopc7283@163.com.

基金项目: 国家自然科学基金资助项目(51678003)


中图分类号: X171.5

Distribution and Removal of Antibiotic Resistance Genes in Municipal and Industrial Mixed Wastewater Treatment Systems

Yao Pengcheng^1,2,
Chen Jiayu^1,2,
Zhang Yongming¹,
Wen Donghui³,
Chen Lvjun^1,2
1. School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China;
2. School of Environment, Tsinghua University, Beijing 100084, China;
3. College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China

CLC number: X171.5

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摘要:抗生素抗性基因(ARGs)由于其广泛的传播与转移，成为日益严峻的环境问题。污水处理厂(WWTP)被公认为ARGs的主要来源之一。膜生物反应器(MBR)是一种新型污染物去除工艺。在一个具有传统生物处理和膜系统处理的城镇污水处理系统的进水中，检出17种ARGs，并首次检出甲氧苄啶类ARGs。进水中sulΙ基因的绝对丰度最高，随后依次是tetC、sulⅡ、tetW、dfrA1、floR和dfrA13基因。不同的处理系统去除同一种ARGs效果各不相同，MBR对ARGs去除效果显著优于传统生物处理工艺，同一个处理系统处理不同类ARGs，四环素类ARGs被去除的效果显著优于其他ARGs被去除的效果，绝对丰度下降了3.8个数量级。ARGs没有真正意义上的去除，只是从水体转移到污泥中，污泥中的ARGs不断积累。
关键词: 抗生素抗性基因/
污水处理厂/
膜生物反应器/
生物处理工艺

Abstract:The antibiotic resistance genes (ARGs) have widely transmitted and transfered in the surroundings and gradually become a serious environmental problem. Wastewater treatment plants (WWTPs) are considered as the main sources of ARGs. Membrane bioreactor (MBR) is an efficient wastewater treatment process for this emerging contaminants. Seventeen ARGs were detected in the influents of a wastewater treatment plant, which applies traditional biological treatment process and MBR process. At the same time, trimethoprim ARGs was first tested and reported. The sulΙ was the most abundant ARGs in the influents, followed by tetC, sulⅡ, tetW, dfrA1, floR and dfrA13. The removal efficiencies of ARGs depends on the wastewater treatment process and the types of ARGs. MBR removes more ARGs than the traditional biological treatment process. Under the MBR process, tetracycline ARGs was removed by 3.8 log, and its removal efficiency is better than other ARGs. However, ARGs are not truly got rid of, and instead, they are transported from water to sludge.
Key words:antibiotic resistance genes/
wastewater treatment plant/
membrane treatment processes/
conventional biological treatment.

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