Viral And Bacterial Aerosols At A Wastewater Spray Irrigation Site
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Viral And Bacterial Aerosols At A Wastewater Spray Irrigation Site
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Author :
language : en
Publisher:
Release Date : 1978
Viral And Bacterial Aerosols At A Wastewater Spray Irrigation Site written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
The second phase of a field study to measure microbiological aerosol disemination by the spray irrigation mode of land wastewater application was conducted at Ft. Huachuca, AZ. Chlorinated and unchlorinated secondarily treated wastewaters were sprayed in periods of high and low sunlight intensity, and bacterial and virus aerosols were sampled. Predictions of long distance migration and aerosol dispersal of total aerobic bacteria and enteric virus (utilizing seeded coliphage f2 as a model), were emphasized.
Exposure To Microbial Aerosols From Activated Sludge Treatment
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Author : Arnold Walit Lam
language : en
Publisher:
Release Date : 1982
Exposure To Microbial Aerosols From Activated Sludge Treatment written by Arnold Walit Lam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Aerosols categories.
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.
Estimating Microorganism Densities In Aerosols From Spray Irrigation Of Wastewater
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Author : John P. Glennon
language : en
Publisher:
Release Date : 1982
Estimating Microorganism Densities In Aerosols From Spray Irrigation Of Wastewater written by John P. Glennon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Aerosols categories.
The Evaluation Of Microbiological Aerosols Associated With The Application Of Wastewater To Land
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Author : Donald Edgar Johnson
language : en
Publisher:
Release Date : 1980
The Evaluation Of Microbiological Aerosols Associated With The Application Of Wastewater To Land written by Donald Edgar Johnson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Sewage irrigation categories.
Wastewater Aerosols And Disease
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Author : H. Pahren
language : en
Publisher:
Release Date : 1981
Wastewater Aerosols And Disease written by H. Pahren and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Aerosols categories.
Research Reporting Series
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Author :
language : en
Publisher:
Release Date : 1970
Research Reporting Series written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Environmental health categories.
Epa 600 1
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Author :
language : en
Publisher:
Release Date : 1970
Epa 600 1 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Pollutants categories.
The Evaluation Of Microbiological Aerosols Associated With The Application Of Wastewater To Land
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Author : Donald Edgar Johnson
language : en
Publisher:
Release Date : 1980
The Evaluation Of Microbiological Aerosols Associated With The Application Of Wastewater To Land written by Donald Edgar Johnson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Sewage irrigation categories.
Methods For Recovering Viruses From The Environment
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Author : Gerald Berg
language : en
Publisher: CRC Press
Release Date : 2018-01-18
Methods For Recovering Viruses From The Environment written by Gerald Berg and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-18 with Science categories.
This book argues, that without methods, there can be no research. Effective research requires effective methods, not always easy to come by. The development of methods in environmental virology became a focus of growing interest about two decades ago. Progress has been significant since that time in pure experimental systems, where there are no interferences, consistent high recoveries of viruses from environmental waters has been achievable for some time. In the natural environment, however, in relatively clean waters, substances such as humic and fulvic acids interfere with viral recoveries and average recovery rates probably do not reach 20%. With sewage sludges and shellfish, recoveries are undoubtedly much lower. Yet, even relatively low viral recovery rates have made possible the detection of viral hazards in drinking waters. The hazards that exist are undoubtedly much greater than those demonstrated with the relatively inefficient methods inefficient methods developed thus far. Improving methods, as they are developed in the years to come, will undoubtedly bring the true extent of the hazards into better perspective.
Selected Water Resources Abstracts
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Author :
language : en
Publisher:
Release Date : 1989
Selected Water Resources Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Hydrology categories.