Exposure To Microbial Aerosols From Activated Sludge Treatment PDF Download
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Author | : Arnold Walit Lam |
Publisher | : |
Total Pages | : 70 |
Release | : 1982 |
Genre | : Aerosols |
ISBN | : |
Download Exposure to Microbial Aerosols from Activated Sludge Treatment Book in PDF, ePub and Kindle
Viable pathogens are generally present at every stage of wastewater treatment. Thus a potential airborne infectious pathway due to microbial aerosols exists, particularly at activated sludge treatment plants. In this study the concentration of sewage-borne indicator bacteria and viruses in effluent aerosols was determined and the exposure to such aerosols by treatment plant workers was estimated. Initial aerosol collection with fog-gage screen collectors yielded erratic results due especially to lack of control over sampled air volume and slit openings too large for effective collection. Standard Andersen and glass impinger collectors were used throughout the field study. Areas downwind of aeration basins yielded as much as 1 657 CFU/m^3 total bacteria and 1.8 CFU/m^3 coliphage. These aerosols were mostly 2.1 to 3.3 μm droplet nuclei with a high potential for inhalation and bronchial retention. The inhalation of microbial aerosols by Wahiawa treatment plant workers was estimated to be between 48 to 94 total bacteria/person/day above background levels. The inhaled total coliform level may average 8 to 27 CFU/person/day. This usually short duration and sometimes intense exposure could not be implicated directly to cause adverse health effects. Correlations of statistical tabulations of sick-leave illness with degree of exposure were not significant at the 0.01 or the 0.05 level.
Author | : Health Effects Research Laboratory (Cincinnati, Ohio) |
Publisher | : |
Total Pages | : 236 |
Release | : 1979 |
Genre | : Aerosol propellants |
ISBN | : |
Download Health Effects of Aerosols Emitted from an Activated Sludge Plant Book in PDF, ePub and Kindle
Author | : Daniel Eugene Donohue |
Publisher | : |
Total Pages | : 236 |
Release | : 1981 |
Genre | : |
ISBN | : |
Download A Method for Determining an Acceptable Risk Level for Involuntary Exposure to Wastewater Aerosols Book in PDF, ePub and Kindle
Author | : H. Pahren |
Publisher | : |
Total Pages | : 388 |
Release | : 1981 |
Genre | : Aerosols |
ISBN | : |
Download Wastewater Aerosols and Disease Book in PDF, ePub and Kindle
Author | : Michael H. Gerardi |
Publisher | : John Wiley & Sons |
Total Pages | : 191 |
Release | : 2004-10-28 |
Genre | : Science |
ISBN | : 0471710423 |
Download Wastewater Pathogens Book in PDF, ePub and Kindle
A practical guide to wastewater pathogens The fourth volume in Wiley's Wastewater Microbiology series, Wastewater Pathogens offers wastewater personnel a practical guide that is free of overly technical jargon. Designed especially for operators, the text provides straight facts on the biology of treatment as well as appropriate protective measures. Coverage includes: * An overview of relevant history, hazards, and organisms * Viruses, bacteria, and fungi * Protozoa and helminthes * Ectoparasites and rodents * Aerosols, foam, and sludge * Disease transmission and the body's defenses * Removal, inactivation, and destruction of pathogens * Hygiene measures, protective equipment, and immunizations
Author | : Lois S. Cronholm |
Publisher | : |
Total Pages | : 80 |
Release | : 1978 |
Genre | : Aerosols |
ISBN | : |
Download Emission of Microbial Aerosols from Polluted Waters in Densely Populated Regions Book in PDF, ePub and Kindle
Author | : Ragnar Rylander |
Publisher | : |
Total Pages | : 24 |
Release | : 1982 |
Genre | : |
ISBN | : |
Download Exposure to Aerosols of Microorganisms and Toxins During Handling of Sewage Sludge Book in PDF, ePub and Kindle
Author | : Donald Edgar Johnson |
Publisher | : |
Total Pages | : 212 |
Release | : 1980 |
Genre | : Sewage irrigation |
ISBN | : |
Download The Evaluation of Microbiological Aerosols Associated with the Application of Wastewater to Land Book in PDF, ePub and Kindle
Author | : National Academies of Sciences, Engineering, and Medicine |
Publisher | : National Academies Press |
Total Pages | : 291 |
Release | : 2020-02-20 |
Genre | : Medical |
ISBN | : 030949382X |
Download Management of Legionella in Water Systems Book in PDF, ePub and Kindle
Legionnaires' disease, a pneumonia caused by the Legionella bacterium, is the leading cause of reported waterborne disease outbreaks in the United States. Legionella occur naturally in water from many different environmental sources, but grow rapidly in the warm, stagnant conditions that can be found in engineered water systems such as cooling towers, building plumbing, and hot tubs. Humans are primarily exposed to Legionella through inhalation of contaminated aerosols into the respiratory system. Legionnaires' disease can be fatal, with between 3 and 33 percent of Legionella infections leading to death, and studies show the incidence of Legionnaires' disease in the United States increased five-fold from 2000 to 2017. Management of Legionella in Water Systems reviews the state of science on Legionella contamination of water systems, specifically the ecology and diagnosis. This report explores the process of transmission via water systems, quantification, prevention and control, and policy and training issues that affect the incidence of Legionnaires' disease. It also analyzes existing knowledge gaps and recommends research priorities moving forward.
Author | : |
Publisher | : |
Total Pages | : 960 |
Release | : 1970 |
Genre | : Pollutants |
ISBN | : |
Download EPA 600/1 Book in PDF, ePub and Kindle