• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Li, Ding-Chang (Li, Ding-Chang.) | Gao, Jing-Feng (Gao, Jing-Feng.) (学者:高景峰) | Zhang, Shu-Jun (Zhang, Shu-Jun.) | Gao, Yong-Qing (Gao, Yong-Qing.) | Sun, Li-Xin (Sun, Li-Xin.)

收录:

EI SCIE PubMed

摘要:

y The prevalence and accumulation of antibiotic resistance genes (ARGs) were frequently detected in biological wastewater treatment processes, which might cause potential health crisis to human. In present study, the fates of ARGs during two different aerobic granular sludge (AGS) cultivation processes were investigated. The results showed that traditional AGS (T-AGS) cultivation process and enhanced AGS (E-AGS) cultivation process had significant differences (P < 0.005) in ARGs shift patterns. E-AGS process had higher average relative abundance (0.280 +/- 0.079) of ARGs than T-AGS process (0.130 +/- 0.041), while the intensity of ARGs enrichment during E-AGS (1.52-5.29 fold) was lower than T-AGS (3.79-75.31 fold) process. TnpA and intI1 as two different types of mobile genetic elements (MGEs) carrying ARGs, were observed to contribute significantly to the horizontal gene transfer (HGT) during T-AGS (r = 0.902, P < 0.050) and E-AGS (r = 0.823, P < 0.001) processes, respectively. Higher HGT level took place and more possible potential hosts (25 hosts) harboring ARGs were detected during E-AGS process comparing with T-AGS process (17 hosts). Meanwhile, over large AGS might increase the propagation of several antibiotic deactivation ARGs, so it was not advised. Overall, whether during T-AGS or during E-AGS process which was applied in a pilot-scale sequencing batch reactor treating municipal wastewater, the accumulation and spread of ARGs were inevitable. It should be valued that some suitable pretreatments of seed sludge should be executed, meanwhile, advanced treatment for removing of ARGs in AGS should be conducted to maintain the relative abundances of ARGs at relatively low level.

关键词:

Aerobic granular sludge Antibiotic resistance genes Co-occurrence patterns Mobile genetic elements Spread patterns

作者机构:

  • [ 1 ] [Li, Ding-Chang]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 2 ] [Gao, Jing-Feng]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China
  • [ 3 ] [Zhang, Shu-Jun]Res & Dev Ctr Beijing Drainage Grp Co Ltd, Beijing 100124, Peoples R China
  • [ 4 ] [Gao, Yong-Qing]Res & Dev Ctr Beijing Drainage Grp Co Ltd, Beijing 100124, Peoples R China
  • [ 5 ] [Sun, Li-Xin]Res & Dev Ctr Beijing Drainage Grp Co Ltd, Beijing 100124, Peoples R China

通讯作者信息:

  • 高景峰

    [Gao, Jing-Feng]Beijing Univ Technol, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

ENVIRONMENT INTERNATIONAL

ISSN: 0160-4120

年份: 2020

卷: 137

1 1 . 8 0 0

JCR@2022

ESI学科: ENVIRONMENT/ECOLOGY;

ESI高被引阀值:30

JCR分区:1

被引次数:

WoS核心集被引频次: 36

SCOPUS被引频次: 30

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 2

在线人数/总访问数:1856/2916528
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司