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Assessment of Seasonal Variation of Microbial Aerosol and Gaseous Emissions From Wastewater Treatment Plant of Morche Khort Industrial Town Publisher



Ebrahimi AA1 ; Ehrampoush MH1 ; Rezaie A1 ; Forghani S1 ; Karimi H2 ; Rezvani M1 ; Zadeh ZS1 ; Jalilia M1
Authors
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Authors Affiliations
  1. 1. Environmental Science and Technology Research Center, Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  2. 2. Student Research Committee and Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Journal of Environmental Health and Sustainable Development Published:2022


Abstract

Introduction: Wastewater contains a large number of pathogenic and nonpathogenic microorganisms that can become bioaerosols during the treatment processes in different units of the treatment plant, and pose a risk to workers and nearby residents. In this study, the release of bioaerosols from a wastewater treatment plant of Morche Khort Industrial Town was investigated. Materials and Methods: Sampling was actively performed according to EPA standard, in two seasons of spring and summer in 2018-2019, by an environmental sampling pump with a flow rate of 15 l/min and a single-stage impactor. The data were analyzed by SPSS software version 2020. Results: The study results showed that the mean number of bacteria in the aeration tank was significantly higher than other points. The mean number of fungi in the aeration pond with 144 CFU/m3 had the highest concentration, and no fungal bioaerosol was observed 500 m downstream. Regarding the emission of H2S, CH4, and VOC gases, the anaerobic tank had the highest emission of these gases. Conclusion: Wastewater treatment plants (WWTPs) with activated sludge treatment technology and an aeration system can lead to an increase in the concentration of bacterial and fungal aerosols around the units and in surrounding areas. © 2022,Journal of Environmental Health and Sustainable Development.All Rights Reserved.
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