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Title: Imprints of lockdown and treatment processes on the wastewater surveillance of SARS-CoV-2 : a curious case of fourteen plants in Northern India
Authors: Arora, Sudipti
Nag, Aditi
Rajpal, Ankur
Tyagi, Vinay Kumar
Tiwari, Satya Brat
Sethi, Jasmine
Sutaria, Devanshi
Rajvanshi, Jayana
Saxena, Sonika
Shrivastava, Sandeep Kumar
Srivastava, Vaibhav
Gupta, Akhilendra Bhushan
Kazmi, Absar Ahmed
Kumar, Manish
Keywords: Engineering::Civil engineering
Issue Date: 2021
Source: Arora, S., Nag, A., Rajpal, A., Tyagi, V. K., Tiwari, S. B., Sethi, J., Sutaria, D., Rajvanshi, J., Saxena, S., Shrivastava, S. K., Srivastava, V., Gupta, A. B., Kazmi, A. A. & Kumar, M. (2021). Imprints of lockdown and treatment processes on the wastewater surveillance of SARS-CoV-2 : a curious case of fourteen plants in Northern India. Water, 13(16), 2265-.
Journal: Water
Abstract: The present study investigated the detection of severe acute respiratory syndrome– coronavirus 2 (SARS-CoV-2) genomes at each treatment stage of 14 aerobic wastewater treatment plants (WWTPs) serving the major municipalities in two states of Rajasthan and Uttarakhand in Northern India. The untreated, primary, secondary and tertiary treated wastewater samples were collected over a time frame ranging from under-lockdown to post-lockdown conditions. The results showed that SARS-CoV-2 RNA was detected in 13 out of 40 wastewater samples in Jaipur district, Rajasthan and in 5 out of 14 wastewater samples in the Haridwar District, Uttarakhand with the E gene predominantly observed as compared to the N and RdRp target genes in later time-points of sampling. The Ct values of genes present in wastewater samples were correlated with the incidence of patient and community cases of COVID-19. This study further indicates that the viral RNA could be detected after the primary treatment but was not present in secondary or tertiary treated samples. This study implies that aerobic biological wastewater treatment systems such as moving bed biofilm reactor (MBBR) technology and sequencing batch reactor (SBR) are effective in virus removal from the wastewater. This work might present a new indication that there is little to no risk in relation to SARS-CoV-2 while reusing the treated wastewater for non-potable applications. In contrast, untreated wastewater might present a potential route of viral transmission through WWTPs to sanitation workers and the public. However, there is a need to investigate the survival and infection rates of SARS-CoV-2 in wastewater.
ISSN: 2073-4441
DOI: 10.3390/w13162265
Rights: © 2021 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// 4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles

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