Human enteric viruses in a wastewater treatment plant: evaluation of activated sludge combined with UV disinfection process reveals different removal performances for viruses with different features

Human enteric viruses in a wastewater treatment plant: evaluation of activated sludge combined with UV disinfection process reveals different removal performances for viruses with different features

This study assess the quality of wastewater through the detection and quantification of important viruses causing gastroenteritis at different stages of the wastewater treatment process in an activated‐sludge wastewater treatment plant with ultraviolet disinfection. Ten sampling events were carried...

Full description

Saved in:
Bibliographic Details
Published in:Letters in applied microbiology Vol. 66; no. 3; pp. 215 - 221
Main Authors: Lizasoain, A., Tort, L.F.L., García, M., Gillman, L., Alberti, A., Leite, J.P.G., Miagostovich, M.P., Pou, S.A., Cagiao, A., Razsap, A., Huertas, J., Berois, M., Victoria, M., Colina, R.
Format: Journal Article
Language:English
Published: England Oxford University Press 01-03-2018
Subjects:
Activated sludge
Adenoviruses
Disinfection
environmental
Gastroenteritis
Quality assessment
Ribonucleic acid
RNA
RNA viruses
Rotavirus
Sludge
Sludge treatment
Transcription
Ultracentrifugation
ultraviolet applications
Ultraviolet radiation
Viruses
Wastewater treatment
Wastewater treatment plants
Water treatment plants
ultraviolet applications
viruses
environmental
disinfection
wastewater treatment
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study assess the quality of wastewater through the detection and quantification of important viruses causing gastroenteritis at different stages of the wastewater treatment process in an activated‐sludge wastewater treatment plant with ultraviolet disinfection. Ten sampling events were carried out in a campaign along a period of 18 months collecting wastewater samples from the influent, after the activated‐sludge treatment, and after the final disinfection with UV radiation. Samples were concentrated through ultracentrifugation and analysed using retro‐transcription, PCR and real time quantitative PCR protocols, for detection and quantification of Group A Rotavirus (RVA), Human Astrovirus (HAstV), Norovirus Genogroup II (NoV GII) and Human Adenovirus (HAdV). HAdV (100%), NoV GII (90%), RVA (70%) and HAstV (60%) were detected in influent samples with concentration from 1·4 (NoV GII) to 8·0 (RVA) log10 gc l−1. Activated‐sludge treatment reached well quality effluents with low organic material concentration, although nonstatistical significant differences were registered among influent and postactivated sludge treatment samples, regarding the presence and concentration for most viruses. All post‐UV samples were negative for NoV GII and HAstV, although RVA and HAdV were detected in 38% and 63% of those samples respectively, with concentration ranging from 2·2 to 5·5 and 3·1 to 3·4 log10 gc l−1. Significance and Impact of the Study This study demonstrates that an activated‐sludge wastewater treatment plant with UV disinfection reduces to levels below the detection limit those single‐stranded RNA viruses as noroviruses and astroviruses and reach significant lower levels of rotaviruses and adenoviruses after the complete treatment process. Significance and Impact of the Study: This study demonstrates that an activated‐sludge wastewater treatment plant with UV disinfection reduces to levels below the detection limit those single‐stranded RNA viruses as noroviruses and astroviruses and reach significant lower levels of rotaviruses and adenoviruses after the complete treatment process.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0266-8254
1472-765X
DOI:10.1111/lam.12839