Journal ArticleDOI
Assessment of microbial aerosol emissions in an urban wastewater treatment plant operated with activated sludge process
TLDR
In this article, 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.Abstract:
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/m3, 741–2817 CFU/m3) and fungi (mean 1384 CFU/m3, 212–1610 CFU/m3) 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 <005) and temperature (p value <005) Also, in the spring and summer, between the number of bacteria and fungi inside the plant and outside the plant (downwind) a significant correlation was observed (p value ≤005) The concentrations of bacteria at a distance of 500 m downwind were much higher than those at the background (upwind) point in spring and summer The processes of wastewater treatment especially using mechanical equipment to create turbulence can be considered as a major source of spreading airborne microorganisms to ambient air of wastewater treatment plants, and the bioaerosols can be dispersed to downwind distances affecting the nearby neighboring Therefore, in order to decrease the bioaerosols emission, doing some course of actions such as covering the surface of aeration basins, changing the aeration methods and aeration equipment (e g using diffuser aerator) may be effectiveread more
Citations
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Journal ArticleDOI
Airborne bacteria in a wastewater treatment plant: Emission characterization, source analysis and health risk assessment.
TL;DR: Air samples were collected from various treatment facilities of a typical WWTP and Opportunistic pathogens such as Micrococcus, Bacteroides, Chryseobacterium, Pseudomonas, and Acinetobacter, were detected in airborne bacteria.
Journal ArticleDOI
Bioaerosols emission and exposure risk of a wastewater treatment plant with A2O treatment process.
TL;DR: The results of an inhalation risk assessment for airborne bacteria and fungi indicated that potential adverse health risks for adults mainly occurred in spring, summer, and autumn, so WWTP operators should set up effective bioaerosol controls as soon as possible to protect the health of workers, and of residents near the plant.
Journal ArticleDOI
Spatial and seasonal variation of the airborne microbiome in a rapidly developing city of China.
TL;DR: The proportion of potential bacterial pathogens during the summer was significantly higher than in the spring, and the relative abundance of several bacterial pathogens related to human diseases increased with increasing urbanization levels, suggesting that urbanization can increase the AM-associated human health risk.
Journal ArticleDOI
Composition, dispersion, and health risks of bioaerosols in wastewater treatment plants: A review
TL;DR: In this article, the authors summarized the most recent research on the health risks of bioaerosols emitted from wastewater treatment plants (WWTPs) in order to improve the control of such bio aerosols.
Journal ArticleDOI
Biotransformation of industrial tannins by filamentous fungi
Valeria Paola Prigione,Federica Spina,Valeria Tigini,Samuele Giovando,Giovanna Cristina Varese +4 more
TL;DR: Filamentous fungi capable of degrading tannins could have a strong environmental impact as bioremediation agents, in particular in the treatment of tanning wastewaters.
References
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Air pollution and lung cancer incidence in 17 European cohorts : Prospective analyses from the European Study of Cohorts for Air Pollution Effects (ESCAPE)
Ole Raaschou-Nielsen,Zorana Jovanovic Andersen,Rob Beelen,Evangelia Samoli,Massimo Stafoggia,Gudrun Weinmayr,Barbara Hoffmann,Paul Fischer,Mark J. Nieuwenhuijsen,Bert Brunekreef,Wei W. Xun,Klea Katsouyanni,Konstantina Dimakopoulou,Johan Nilsson Sommar,Bertil Forsberg,Lars Modig,Anna Oudin,Bente Oftedal,Per E. Schwarze,Per Nafstad,Per Nafstad,Ulf de Faire,Nancy L. Pedersen,Claes-Göran Östenson,Laura Fratiglioni,Johanna Penell,Michal Korek,Göran Pershagen,Kirsten Thorup Eriksen,Mette Sørensen,Anne Tjønneland,Thomas Ellermann,Marloes Eeftens,Petra H.M. Peeters,Kees Meliefste,Meng Wang,Bas Bueno-de-Mesquita,Timothy J. Key,Kees de Hoogh,Hans Concin,Gabriele Nagel,Alice Vilier,Alice Vilier,Sara Grioni,Vittorio Krogh,Ming-Yi Tsai,Ming-Yi Tsai,Fulvio Ricceri,Carlotta Sacerdote,C Galassi,Enrica Migliore,Andrea Ranzi,Giulia Cesaroni,Chiara Badaloni,Francesco Forastiere,Ibon Tamayo,Pilar Amiano,Miren Dorronsoro,Antonia Trichopoulou,Christina Bamia,Paolo Vineis,Gerard Hoek +61 more
TL;DR: The meta-analyses showed a statistically significant association between risk for lung cancer and PM10 and PM2·5, and no association between lungcancer and nitrogen oxides concentration or traffic intensity on the nearest street.
Journal ArticleDOI
Bioaerosol Health Effects and Exposure Assessment: Progress and Prospects
TL;DR: Important areas that require further research include: potential protective effects of microbial exposures on atopy and atopic diseases, inter-individual susceptibility for biological exposures, interactions of bioaerosols with non-biological agents and other potential health effects such as skin and neurological conditions and birth effects.
Journal ArticleDOI
The effects of meteorological factors on atmospheric bioaerosol concentrations--a review.
Alan M. Jones,Roy M. Harrison +1 more
TL;DR: Measurements of the concentrations of airborne material near dominant sources are reviewed for both area sources, and for point sources such as sewage and waste treatment works, agricultural practices, and diseased animals.
Journal ArticleDOI
Actinomycetes from sediments in the Trondheim fjord, Norway: diversity and biological activity.
TL;DR: It is suggested that actinomycetes from marine sediments in Norwegian fjords can be potential sources for the discovery of novel anti-infective agents and strong antibiotic-producing potential among them.
Journal ArticleDOI
Bacterial pathogen incidences in sludge from Swedish sewage treatment plants
TL;DR: This study surveyed the presence of bacterial pathogens in eight Swedish sewage treatment plants, with four different treatment methods, focusing on detection of zoonotic bacteria in raw and treated sludge, indicating that Salmonella persists in STPs and that there is a continuous supply of new strains.