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

Abstract

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.

Highly predictive regression model of active cases of COVID-19 in a population by screening wastewater viral load

“…Wastewater is a dynamic system that can reflect the circulation of microorganisms in the population. Previous studies have evaluated the presence in wastewater of several viruses [41][42][43][44][45] . Processes to monitor SARS-CoV-2 in wastewater were first developed in the Netherlands 35 , followed by the USA 46 , France 39 , Australia 36 , Italy 47 and Spain 37,48 . In the Netherlands, no viral RNA was detected 3 weeks before the first case was reported, but genetic material started to appear over time, as the number of cases of COVID-19 increased 35 .…”

Highly predictive regression model of active cases of COVID-19 in a population by screening wastewater viral load

“…Wastewater is a dynamic system that can reflect the circulation of microorganisms in the population. Previous studies have evaluated the presence in wastewater of several viruses [41][42][43][44][45] . Processes to monitor SARS-CoV-2 in wastewater were first developed in the Netherlands 35 , followed by the USA 46 , France 39 , Australia 36 , Italy 47 and Spain 37,48 .…”

Where do we stand to oversee the coronaviruses in aqueous and aerosol environment? Characteristics of transmission and possible curb strategies

“…It is noteworthy that chemical oxidants would mainly damage viral capsid proteins for disinfection, while the UV would damage the viral genome and proteins [114] , [115] . A separate study demonstrated that UV disinfection would reduce single-stranded RNA virus levels below detection limits [116] . Ye, et al [117] explored the inactivation mechanism of enveloped viruses in UV and free chlorine, showing that the molecular features of an enveloped virus were susceptible to chemical oxidants or UV radiation.…”