Assessment of microbial aerosol emissions in an urban wastewater treatment plant operated with activated sludge process

Wastewater that enters wastewater treatment plants contains lots of pathogenic and nonpathogenic microorganisms which can become bioaerosols during treatment processes and pose health hazard to workers and nearby residents. The emission of the bioaerosols from an urban wastewater treatment plant in...

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Bibliographic Details
Published in:Aerobiologia 2017-12, Vol.33 (4), p.507-515
Main Authors: Fathi, Saied, Hajizadeh, Yaghoub, Nikaeen, Mahnaz, Gorbani, Mozhgan
Format: Article
Language:English
Subjects:
Activated sludge
Aeration
Aerosols
Airborne microorganisms
Allergology
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
Basins
Bioaerosols
Earth and Environmental Science
Environment
Environmental Engineering/Biotechnology
Environmental Health
Fungi
Microorganisms
Original Paper
Plant Pathology
Pneumology/Respiratory System
Statistical analysis
Turbulence
Wastewater treatment
Water treatment plants
Workers
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Summary:Wastewater that enters wastewater treatment plants contains lots of pathogenic and nonpathogenic microorganisms which can become bioaerosols during treatment processes and pose health hazard to workers and nearby residents. The emission of the bioaerosols from an urban wastewater treatment plant in spring and summer in different locations and downwind of the plant adopting an extended mechanical aeration system was investigated. Samples of bacteria and fungi were collected within 6 months at 10 selected points by an Anderson one-stage impactor. The highest concentration of bacteria (mean 1373 CFU/m 3 , 741–2817 CFU/m 3 ) and fungi (mean 1384 CFU/m 3 , 212–1610 CFU/m 3 ) was found in downwind of the aeration basins. Statistical analysis showed a significant relationship between concentration of bacterial bioaerosols at downwind side of the aeration basins and wind speed ( p value
ISSN:0393-5965
1573-3025
DOI:10.1007/s10453-017-9486-2