M. Jahangiri, M. Neghab, R. Rostami, M. Aghabeigi, V. Kahdemain, F. Zare Derisi,
Volume 3, Issue 4 (2-2014)
Abstract
Introduction: Bioaeroslos released from wastewater treatment plants may contain pathogens existing in the sewage which could endanger the health of workers. The aim of this study was to evaluate the status of bioaerosol emissions form in a sanitary wastewater treatment plant.
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Material and Method: This cross-sectional study was carried out in different units of a sanitary wastewater treatment plant. For this purpose, air samples were collected on blood agar and dextro agar in an Andersen single-stage sampler with flow of 28.3 lit/min for 10 minutes. Collected samples were shipped to the lab immediately and incubated for 48 hours. Then, incubated samples were counted for colonies concentration.
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Result: Based on the result of this study, the mean density of bacterial and fungal bioaerosols in all wastewater treatment plants were 412.86±23.30 and 53.72±23.99 CFU/m3, respectively. Microbial contamination of the air within a kilometer away from the site (control areas) was 17 times less than its average density.
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Conclusion: Wastewater treatment processes can contaminate the air surrounding the plant, particularly with bacteria bioaerosols. Therefore, it is necessary to control the emissions and protect the health of workers against risks arising from exposure to bioaerosols.
Fardin Ahmadkhani, Soqrat Omari Shekaftik, Reza Kachuei,
Volume 16, Issue 1 (3-2026)
Abstract
Introduction: Fungal contaminants in workplace environments pose significant biological hazards to employee health across various industries. This narrative review aims to explore the types of contaminating fungi, their health impacts, and strategies for prevention and control in occupational settings.
Material and Methods: This study was designed as a narrative review, with scientific literature sourced from databases including PubMed, Scopus, Web of Science, and local databases like Magiran and SID, covering the period from 2000 to March 2025. Keywords such as “fungal contaminants,” “occupational health,” and “mycotoxins” were used. Data were qualitatively analyzed and organized into thematic categories.
Results: Fungi such as Aspergillus, Penicillium, Cladosporium, and Stachybotrys are prevalent in environments with high humidity, poor ventilation, and abundant organic material, causing respiratory diseases, allergies, fungal infections, and chronic toxic effects. Identification methods include air sampling, molecular analysis, and mycotoxin assessment. Effective control measures encompass humidity management, enhanced ventilation, and personal protective equipment.
Conclusion: Effective management of fungal contaminants requires integrated approaches, including accurate identification, environmental control, and employee training. These measures can enhance worker health and reduce economic and social costs.
