Download or read book Viral and Bacterial Aerosols at a Wastewater Spray Irrigation Site written by and published by . This book was released on 1978 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Bacterial Aerosols Resulting from Spray Irrigation with Wastewater written by Howard T. Bausum and published by . This book was released on 1976 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air sampling equipment was selected and adapted for the study of bacterial aerosols generated through land application of treated wastewater by spray irrigation. Preliminary data were obtained on bacteria present in treated and untreated domestic sewage at Army installations. Data were also obtained on survival of enteric bacteria in laboratory aerosols generated from wastewater at various relative humidities. A field study of 3 weeks duration was undertaken to measure aerosol dissemination of bacteria at a wastewater spray irrigation site at Ft. Huachuca, Az, Aerosol densities for the total aerobic bacteria ranged up to 1630 cu. m. at sampling points nearest the aerosol source. Confirmed coliform bacteria represented about 0.5 percent of the total, and of those nearly half were Klebsiella. Densities were greater under conditions of low wind, atmospheric stability and darkness. A mathematical model predicting downwind aerosol densities was developed, based on the dispersion equation of Pasquill and took into account the parameters of the spray equipment used. The model, in conjunction with fluorescein tracer data, was used in deriving an estimate of the fraction of wastewater entering the aerosol state.

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 Estimating Microorganism Densities in Aerosols from Spray Irrigation of Wastewater written by John P. Glennon and published by . This book was released on 1982 with total page 42 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 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 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 Viral and Bacterial Levels Resulting from the Land Application of Digested Sludge written by Metropolitan Sanitary District of Greater Chicago (Ill.) and published by . This book was released on 1979 with total page 84 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 1296 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 A Field Technique Measuring Virus Decay and Potential Aerosol Hazard from Wastewater Sprinkler Irrigation written by Utah Water Research Laboratory and published by . This book was released on 1975 with total page 43 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 Environmental Pollution Control Microbiology written by Ross E. McKinney and published by CRC Press. This book was released on 2004-03-11 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiling knowledge gained through more than 50 years of experience in environmental engineering technology, this book illustrates the application of fundamental concepts in microbiology to provide a sound basis for the design and operation of various biological systems used in solving environmental challenges in the air, water, and soil. Environmental Pollution Control Microbiology emphasizes the quantitative relationships of microbial growth and metabolism, beginning an examination of the overall metabolism and resulting growth of bacteria, fungi, algae, protozoa, rotifers, and other microorganisms and explains how bacteria bring about the stabilization of biodegradable organic pollutants.

Download or read book Wastewater Irrigation written by Karl Schneider and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliographies and Literature of Agriculture written by and published by . This book was released on 1989 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Virus Aspects of Applying Municipal Waste to Land written by L. B. Baldwin and published by . This book was released on 1976 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wastewater Reclamation and Reuse written by Takashi Asano and published by CRC Press. This book was released on 1998-06-15 with total page 1570 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effective integration of water and reclaimed wastewater still requires close examination of public health issues, infrastructure and facilities planning, wastewater treatment plant siting, treatment process reliability, economic and financial analyses, and water utility management. This book assembles, analyzes, and reviews the various aspects of wastewater reclamation, recycling, and reuse in most parts of the world. It considers the effective integration of water and reclaimed wastewater, public health issues, infrastructure and facilities planning, waste-water treatment plant siting, treatment process reliability, economic and financial analysis, and water utility management.