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Atmosphere
Volume 13
Issue 10
10.3390/atmos13101723
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Article

Effect of Odor-Treatment Biofilter on Bioaerosols from an Indoor Wastewater Treatment Plant

by
Amélia Bélanger Cayouette
1,2,
Arthur Ouradou
3,
Marc Veillette
1,
Nathalie Turgeon
1,
Paul B. L. George
1,2,
Stéphane Corbin
4,
Christian Boulanger
4,
Caroline Duchaine
1,2 and
Emilie Bédard
3,*
1
Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, QC G1V 4G5, Canada
2
Département de Biochimie, de Microbiologie et de Bio-Informatique, Faculté des Sciences et de Génie, Université Laval, Québec, QC G1V 0A6, Canada
3
Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, Québec, QC H3T 1J4, Canada
4
Ville de Repentigny, Repentigny, QC J6A 0A6, Canada
*
Author to whom correspondence should be addressed.
Atmosphere 2022, 13(10), 1723; https://doi.org/10.3390/atmos13101723
Submission received: 13 September 2022 / Revised: 13 October 2022 / Accepted: 17 October 2022 / Published: 20 October 2022
(This article belongs to the Special Issue Airborne Microbiota in Indoor and Occupational Environments)
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Abstract

Wastewater treatment plants (WWTPs) are confirmed sources of bioaerosols and can be a hotspot for both antibiotic-resistant bacteria and antibiotic-resistant genes (ARGs). Bioaerosols can be a source of dispersion for bacteria and ARGs into the environment. Biofiltration is one of the most effective technologies to mitigate odors from WWTPs. The objective of this study was to evaluate the capacity of an odor biofiltration system designed to remove volatile compounds, to influence the airborne bacterial diversity and to reduce the aerosolized microbial and ARG concentrations. In total, 28 air samples were collected before and after treatment of an interior WWTP. Overall, air samples collected upstream had higher total bacterial concentrations, and a shift in bacterial diversity was observed. Legionella and Mycobacterium were detected in low abundance upstream and downstream, whereas Legionella pneumophila was detected but not quantifiable in two samples. Of the 31 ARGs and mobile genetic elements detected by quantitative polymerase chain reaction, 15 exhibited a significant reduction in their relative abundance after biofiltration, and none were significantly higher in the effluent. Overall, these results show the benefits of odor biofiltration systems to reduce bacterial and antimicrobial resistance in treated air, a promising application to limit environmental dispersion.
Keywords: bioaerosols; wastewater treatment plant; antibiotic resistance; biofiltration; opportunistic pathogens bioaerosols; wastewater treatment plant; antibiotic resistance; biofiltration; opportunistic pathogens

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MDPI and ACS Style

Bélanger Cayouette, A.; Ouradou, A.; Veillette, M.; Turgeon, N.; George, P.B.L.; Corbin, S.; Boulanger, C.; Duchaine, C.; Bédard, E. Effect of Odor-Treatment Biofilter on Bioaerosols from an Indoor Wastewater Treatment Plant. Atmosphere 2022, 13, 1723. https://doi.org/10.3390/atmos13101723

AMA Style

Bélanger Cayouette A, Ouradou A, Veillette M, Turgeon N, George PBL, Corbin S, Boulanger C, Duchaine C, Bédard E. Effect of Odor-Treatment Biofilter on Bioaerosols from an Indoor Wastewater Treatment Plant. Atmosphere. 2022; 13(10):1723. https://doi.org/10.3390/atmos13101723

Chicago/Turabian Style

Bélanger Cayouette, Amélia, Arthur Ouradou, Marc Veillette, Nathalie Turgeon, Paul B. L. George, Stéphane Corbin, Christian Boulanger, Caroline Duchaine, and Emilie Bédard. 2022. "Effect of Odor-Treatment Biofilter on Bioaerosols from an Indoor Wastewater Treatment Plant" Atmosphere 13, no. 10: 1723. https://doi.org/10.3390/atmos13101723

APA Style

Bélanger Cayouette, A., Ouradou, A., Veillette, M., Turgeon, N., George, P. B. L., Corbin, S., Boulanger, C., Duchaine, C., & Bédard, E. (2022). Effect of Odor-Treatment Biofilter on Bioaerosols from an Indoor Wastewater Treatment Plant. Atmosphere, 13(10), 1723. https://doi.org/10.3390/atmos13101723

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