Volume 26 Issue 10
Oct.  2013
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HUANG Jing Jing, XI Jing Ying, HU Hong Ying, TANG Fang, PANG Yu Chen. Inactivation and Regrowth of Antibiotic-resistant Bacteria by PAA Disinfection in the Secondary Effluent of a Municipal Wastewater Treatment Plant[J]. Biomedical and Environmental Sciences, 2013, 26(10): 865-868. doi: 10.3967/bes2013.012
Citation: HUANG Jing Jing, XI Jing Ying, HU Hong Ying, TANG Fang, PANG Yu Chen. Inactivation and Regrowth of Antibiotic-resistant Bacteria by PAA Disinfection in the Secondary Effluent of a Municipal Wastewater Treatment Plant[J]. Biomedical and Environmental Sciences, 2013, 26(10): 865-868. doi: 10.3967/bes2013.012

Inactivation and Regrowth of Antibiotic-resistant Bacteria by PAA Disinfection in the Secondary Effluent of a Municipal Wastewater Treatment Plant

doi: 10.3967/bes2013.012
Funds:  This study was supported by Chinese National Science Fund (Key Program) (51078209)
  • Inactivation and microbial regrowth of penicillin-,ampicillin-,cefalexin-,tetracycline-,chloramphenicol-,and rifampicin-resistant bacteria were studied to explore risks associated with selection and regrowth of antibiotic-resistant bacteria after PAA disinfection.The results showed that after exposure to 20 mg/L PAA for 10 min,inactivation of ampicillin-resistant bacteria reached 2.3-log,which was significantly higher than that of total heterotrophic bacteria with a decrease of 2.0-log.In contrast,inactivation of tetracyclineresistant bacteria was significantly less efficient,reaching only 1.1-log.Chloramphenicol-and tetracycline-resistant bacteria,as well as total heterotrophic bacteria regrew more than 10 fold compared to those in the untreated wastewater sample with 22 h stilling culture after exposure to 2 or 5 mg/L PAA as for 10 min.Selection and potential regrowth of tetracycline-and chloramphenicol-resistant bacteria are potential risks when utilizing PAA disinfection,which may induce the spread of specific antibiotic-resistant bacteria in reclaimed water.

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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Inactivation and Regrowth of Antibiotic-resistant Bacteria by PAA Disinfection in the Secondary Effluent of a Municipal Wastewater Treatment Plant

doi: 10.3967/bes2013.012
Funds:  This study was supported by Chinese National Science Fund (Key Program) (51078209)

Abstract: 

Inactivation and microbial regrowth of penicillin-,ampicillin-,cefalexin-,tetracycline-,chloramphenicol-,and rifampicin-resistant bacteria were studied to explore risks associated with selection and regrowth of antibiotic-resistant bacteria after PAA disinfection.The results showed that after exposure to 20 mg/L PAA for 10 min,inactivation of ampicillin-resistant bacteria reached 2.3-log,which was significantly higher than that of total heterotrophic bacteria with a decrease of 2.0-log.In contrast,inactivation of tetracyclineresistant bacteria was significantly less efficient,reaching only 1.1-log.Chloramphenicol-and tetracycline-resistant bacteria,as well as total heterotrophic bacteria regrew more than 10 fold compared to those in the untreated wastewater sample with 22 h stilling culture after exposure to 2 or 5 mg/L PAA as for 10 min.Selection and potential regrowth of tetracycline-and chloramphenicol-resistant bacteria are potential risks when utilizing PAA disinfection,which may induce the spread of specific antibiotic-resistant bacteria in reclaimed water.

HUANG Jing Jing, XI Jing Ying, HU Hong Ying, TANG Fang, PANG Yu Chen. Inactivation and Regrowth of Antibiotic-resistant Bacteria by PAA Disinfection in the Secondary Effluent of a Municipal Wastewater Treatment Plant[J]. Biomedical and Environmental Sciences, 2013, 26(10): 865-868. doi: 10.3967/bes2013.012
Citation: HUANG Jing Jing, XI Jing Ying, HU Hong Ying, TANG Fang, PANG Yu Chen. Inactivation and Regrowth of Antibiotic-resistant Bacteria by PAA Disinfection in the Secondary Effluent of a Municipal Wastewater Treatment Plant[J]. Biomedical and Environmental Sciences, 2013, 26(10): 865-868. doi: 10.3967/bes2013.012

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