tetano
Editor, Senior Moderator
J Hazard Mater
. 2022 Jan 29;429:128358.
doi: 10.1016/j.jhazmat.2022.128358. Online ahead of print.
Persistence of SARS-CoV-2 RNA in wastewater after the end of the COVID-19 epidemics
Shaolin Yang[SUP] 1 [/SUP], Qian Dong[SUP] 1 [/SUP], Siqi Li[SUP] 1 [/SUP], Zhao Cheng[SUP] 1 [/SUP], Xiaofeng Kang[SUP] 1 [/SUP], Daheng Ren[SUP] 1 [/SUP], Chenyang Xu[SUP] 1 [/SUP], Xiaohong Zhou[SUP] 1 [/SUP], Peng Liang[SUP] 1 [/SUP], Lingli Sun[SUP] 2 [/SUP], Jianhong Zhao[SUP] 2 [/SUP], Yang Jiao[SUP] 2 [/SUP], Taoli Han[SUP] 2 [/SUP], Yanchen Liu[SUP] 3 [/SUP], Yi Qian[SUP] 1 [/SUP], Yi Liu[SUP] 1 [/SUP], Xia Huang[SUP] 4 [/SUP], Jiuhui Qu[SUP] 5 [/SUP]
Affiliations
Abstract
Although the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been widely detected in wastewater in many countries to track the COVID-19 pandemic development, it is still a lack of clear understanding of the persistence of SARS-CoV-2 in raw sewage, especially after the end of the COVID-19 pandemic event. To fill this knowledge gap, this study conducted a field trial on the SARS-CoV-2 presence in various wastewater facilities after the end of the COVID-19 epidemics in Beijing. The result showed that the wastewater treatment facility is a large SARS-CoV-2 repository. The viral RNA was still present in hospital sewage for 15 days and was continually detected in municipal WWTPs for more than 19 days after the end of the local COVID-19 epidemics. The T[SUB]90[/SUB] values of the SARS-CoV-2 RNA in raw wastewater were 17.17-8.42 days in the wastewater at 4 ℃ and 26 ℃, respectively, meaning that the decay rates of low titer viruses in raw sewage were much faster. The results confirmed that the SARS-CoV-2 RNA could persist in wastewater for more than two weeks, especially at lower temperatures. The sewage systems would be a virus repository and prolong the presence of the residual SARS-CoV-2 RNA. The study could enhance further understanding of the presence of SARS-CoV-2 RNA in raw wastewater.
Keywords: Persistence; SARS-CoV-2; Sewage systems; Wastewater.
. 2022 Jan 29;429:128358.
doi: 10.1016/j.jhazmat.2022.128358. Online ahead of print.
Persistence of SARS-CoV-2 RNA in wastewater after the end of the COVID-19 epidemics
Shaolin Yang[SUP] 1 [/SUP], Qian Dong[SUP] 1 [/SUP], Siqi Li[SUP] 1 [/SUP], Zhao Cheng[SUP] 1 [/SUP], Xiaofeng Kang[SUP] 1 [/SUP], Daheng Ren[SUP] 1 [/SUP], Chenyang Xu[SUP] 1 [/SUP], Xiaohong Zhou[SUP] 1 [/SUP], Peng Liang[SUP] 1 [/SUP], Lingli Sun[SUP] 2 [/SUP], Jianhong Zhao[SUP] 2 [/SUP], Yang Jiao[SUP] 2 [/SUP], Taoli Han[SUP] 2 [/SUP], Yanchen Liu[SUP] 3 [/SUP], Yi Qian[SUP] 1 [/SUP], Yi Liu[SUP] 1 [/SUP], Xia Huang[SUP] 4 [/SUP], Jiuhui Qu[SUP] 5 [/SUP]
Affiliations
- PMID: 35123131
- DOI: 10.1016/j.jhazmat.2022.128358
Abstract
Although the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been widely detected in wastewater in many countries to track the COVID-19 pandemic development, it is still a lack of clear understanding of the persistence of SARS-CoV-2 in raw sewage, especially after the end of the COVID-19 pandemic event. To fill this knowledge gap, this study conducted a field trial on the SARS-CoV-2 presence in various wastewater facilities after the end of the COVID-19 epidemics in Beijing. The result showed that the wastewater treatment facility is a large SARS-CoV-2 repository. The viral RNA was still present in hospital sewage for 15 days and was continually detected in municipal WWTPs for more than 19 days after the end of the local COVID-19 epidemics. The T[SUB]90[/SUB] values of the SARS-CoV-2 RNA in raw wastewater were 17.17-8.42 days in the wastewater at 4 ℃ and 26 ℃, respectively, meaning that the decay rates of low titer viruses in raw sewage were much faster. The results confirmed that the SARS-CoV-2 RNA could persist in wastewater for more than two weeks, especially at lower temperatures. The sewage systems would be a virus repository and prolong the presence of the residual SARS-CoV-2 RNA. The study could enhance further understanding of the presence of SARS-CoV-2 RNA in raw wastewater.
Keywords: Persistence; SARS-CoV-2; Sewage systems; Wastewater.