Seasonal variation of quantitative microbial risk assessment for three airborne enteric bacteria from wastewater treatment plant emissions

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dc.contributor.authorGui, Zi-cheng
dc.contributor.authorLi, Xiang
dc.contributor.authorPeng, Zhang-di
dc.contributor.authorYan, Cheng
dc.contributor.authorNasir, Zaheer A.
dc.contributor.authorGarcia Alcega, Sonia
dc.contributor.authorCoulon, Frederic
dc.date.accessioned2022-06-01T13:48:59Z
dc.date.available2022-06-01T13:48:59Z
dc.date.issued2022-05-26
dc.description.abstractAirborne E. coli, fecal coliform, and Enterococcus are all related to sewage worker’s syndrome and therefore used as target enteric bioaerosols about researches in wastewater treatment plants (WWTPs). However, most of the studies are often inadequately carried out because they lack systematic studies reports bioaerosols emission characteristics and health risk assessments for these three enteric bacteria during seasonal variation. Therefore, quantitative microbial risk assessment based on Monte Carlo simulation was utilized in this research to assess the seasonal variations of health risks of the three enteric bioaerosols among exposure populations (academic visitors, field engineers, and office staffs) in a WWTP equipped with rotating-disc and microporous aeration modes. The results show that the concentrations of the three airborne bacteria from the rotating-disc aeration mode were 2–7 times higher than the microporous aeration mode. Field engineers had health risks 1.5 times higher than academic visitors due to higher exposure frequency. Health risks of airborne Enterococcus in summer were up to 3 times higher than those in spring and winter. Similarly, health risks associated to E. coli aerosol exposure were 0.3 times higher in summer compared to spring. In contrast, health risks associated with fecal coliform aerosol were between 2 and 19 times lower in summer compared to spring and winter seasons. Data further suggest that wearing of N95 mask could minimize health risks by 1–2 orders of magnitude. This research shed light on seasonal variation of health risks associated with bioaerosol emission from wastewater utilities.en_UK
dc.identifier.citationGui ZC, Li X, Liu ML, et al., (2022) Seasonal variation of quantitative microbial risk assessment for three airborne enteric bacteria from wastewater treatment plant emissions. Ecotoxicology and Environmental Safety, Volume 240, July 2022, Article number 113689en_UK
dc.identifier.issn0147-6513
dc.identifier.urihttps://doi.org/10.1016/j.ecoenv.2022.113689
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17987
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectEnteric bacteria bioaerosolsen_UK
dc.subjectEmission characteristicsen_UK
dc.subjectMonte Carlo simulationen_UK
dc.subjectAnnual probability of infectionen_UK
dc.subjectDisease burdenen_UK
dc.titleSeasonal variation of quantitative microbial risk assessment for three airborne enteric bacteria from wastewater treatment plant emissionsen_UK
dc.typeArticleen_UK

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