Investigation of the Bacterial Bioaerosols in the Air of Wastewater Treatment Plant of Jahanabad Meybod Industrial Town

Mohammad  Salaree; Mohammad Hasan  Ehrampoush; Fahimeh  Teimouri; Maryam  Sadeh; Farzan  Madadizadeh; Gilda  Eslami; Zahra  Sotanianzadeh; Ali Asghar  Ebrahimi

doi:10.18502/tbj.v20i6.8955

Mohammad Salaree M.Sc. Student of Environmental Health Engineering, School of public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Mohammad Hasan Ehrampoush Professor, Environmental Science and Technology Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Fahimeh Teimouri Assistant Professor, Environmental Science and Technology Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Maryam Sadeh Assistant Professor, Department of laboratory sciences, School of Paramedicins, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Farzan Madadizadeh Assistant Professor, Departments of biostatistics and Epidemiology, School of public health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Gilda Eslami Associate Professor, Research Center for Molecular Identification of Food Hazards, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Zahra Sotanianzadeh M.Sc. Environmental Science and Technology Research Center, School of Public Health, Shahid Sadoughi Universityof Medical Sciences, Yazd, Iran.
Ali Asghar Ebrahimi Associate Professor, Environmental Science and Technology Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

DOI: https://doi.org/10.18502/tbj.v20i6.8955

Keywords: Bioaerosol, Industrial Wastewater, Bacteria, Active Sampling

Abstract

Introduction: In recent decades, with the emergence of new industrial activities and increase production of waste production, industries require the existence of treatment equipment and sanitation. These devices sometimes spread infectious microorganisms into the air. These include waste recycling industries and wastewater treatment plants. Bioaerosols are produced at different stages of the wastewater treatment process, especially in processes such as mobile mechanisms and aeration.

Methods: In this study, air sampling was performed from different units of the treatment plant and indoor air. the plates were placed in an incubator for 24-48 hours at a temperature of 35 to 37 ° C. Then the number of bacterial colonies grown on the culture media was counted and recorded as CFU/m³.

Results: The results showed that the average population of bacterial aerosols was higher in summer than in spring. Also, the highest bacterial population was observed in spring in indoor air with an average of 187.58±13.41 CFU/m³ and in summer in a equalization unit with an average of 202.89±12.11 CFU/m³.

Conclusion: The results of this study showed that the number of bacterial bioaerosols increases in warm seasons. Also, the equalization unit had a high ability to produce bacterial bioaerosols. Finally, It can be said that increasing the distance from the source of contamination causes a significant reduction in the number of bacterial bioaerosols.