Download or read book Exposure to Microbial Aerosols from Activated Sludge Treatment written by Arnold Walit Lam and published by . This book was released on 1982 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Health Effects of Aerosols Emitted from an Activated Sludge Plant written by Health Effects Research Laboratory (Cincinnati, Ohio) and published by . This book was released on 1979 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Method for Determining an Acceptable Risk Level for Involuntary Exposure to Wastewater Aerosols written by Daniel Eugene Donohue and published by . This book was released on 1981 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wastewater Aerosols and Disease written by H. Pahren and published by . This book was released on 1981 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Emission of Microbial Aerosols from Polluted Waters in Densely Populated Regions written by Lois S. Cronholm and published by . This book was released on 1978 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wastewater Pathogens written by Michael H. Gerardi and published by John Wiley & Sons. This book was released on 2004-10-28 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Exposure to Aerosols of Microorganisms and Toxins During Handling of Sewage Sludge written by Ragnar Rylander and published by . This book was released on 1982 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Evaluation of Microbiological Aerosols Associated with the Application of Wastewater to Land written by Donald Edgar Johnson and published by . This book was released on 1980 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Management of Legionella in Water Systems written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-02-20 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book EPA 600 1 written by and published by . This book was released on 1970 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1989 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Health Effects of Aerosols Emitted from an Activated Sludge Plant written by Health Effects Research Laboratory (Cincinnati, Ohio) and published by . This book was released on 1979 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Reporting Series written by and published by . This book was released on 1970 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantitative Microbial Risk Assessment written by Charles N. Haas and published by John Wiley & Sons. This book was released on 2014-06-09 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the latest QMRA methodologies to determine infection risk cause by either accidental microbial infections or deliberate infections caused by terrorism • Reviews the latest methodologies to quantify at every step of the microbial exposure pathways, from the first release of a pathogen to the actual human infection • Provides techniques on how to gather information, on how each microorganism moves through the environment, how to determine their survival rates on various media, and how people are exposed to the microorganism • Explains how QMRA can be used as a tool to measure the impact of interventions and identify the best policies and practices to protect public health and safety • Includes new information on genetic methods • Techniques use to develop risk models for drinking water, groundwater, recreational water, food and pathogens in the indoor environment

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1989 with total page 1322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Siting of Wastewater Treatment Facilities for Boston Harbor written by and published by . This book was released on 1985 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bioaerosols Emission from Anthropogenic Sources written by Nitin Kumar Singh and published by Elsevier. This book was released on 2023-09-14 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioaerosols Emission from Anthropogenic Sources: Influencing Factors, Microbial Diversity, Epidemiological Threats, and Control Approaches covers various sources of biohazards and their associated risk factors. These air contaminants are developing concerns to people and the environment and must be addressed to avert future dangers. As little is known about their precise sources, controlling variables, microbial diversity, the involvement of co-pollutants, and dispersion and control methods, this book will assist stakeholders, including the public, government officials, and policymakers in developing successful strategies for ensuring society's safety. - Identifies potential emission stages at different anthropogenic sources of bioaerosols - Discusses characteristics, fate and development of effective control strategies for minimizing exposure to site specific bioaerosols - Presents cleaner production and sustainable development tactics of bioaerosols