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 Estimating Microorganism Densities in Aerosols from Spray Irrigation of Wastewater written by United States. Environmental Protection Agency. Office of Research and Development and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimating Microorganism Densities in Aerosols from Spray Irrigation of Wastewater written by and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Monthly Catalogue United States Public Documents written by and published by . This book was released on 1983 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Indexes written by United States. Environmental Protection Agency and published by . This book was released on 1983 with total page 1760 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Government Reports Announcements Index written by and published by . This book was released on 1982 with total page 1428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methods For Recovering Viruses From The Environment written by Gerald Berg and published by CRC Press. This book was released on 2018-01-18 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Natural Systems for Waste Management and Treatment written by Sherwood C. Reed and published by McGraw Hill Professional. This book was released on 1998-08 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: MANAGE WASTE AT LOWER COST WITH EMERGING NATURAL SYSTEMS Biologically-based waste management systems are emerging as a more reliable, less costly alternative to conventional energy-intensive mechanical process. If you're involved in planning, designing, building, upgrading or operating waste management facilities, Natural Systems for Waste Management and Treatment, Second Edition, by Sherwood C. Reed, Ronald W. Crites, and E. Joe Middlebrooks, can help you quickly evaluate and adopt one or more of these innovative technologies. Complete with performance data plus easy-to-follow design procedures (with example), it gives you a thorough working backgroud in: Wastewater stabilization ponds; Aquatic treatment systems; Feasibility assessment; Land treatment systems; Wetland systems; Site selection; Planning; Sludge management and treatment; On-site wastewater management; Much more.

Download or read book The Evaluation of Microbiological Aerosols Associated with the Application of Wastewater to Land Pleasanton California written by D. E. Johnson and published by . This book was released on 1979 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose was to determine extent that individuals near spray irrigation sites are exposed to microorganisms in wastewater aerosols. Report covers Phase II - a monitoring effort from May 1976 to April 1977 of a spray irrigation site utilizing unchlorinated secondarily-treated wastewater from biofiltration treatment process. Objectives included an in-depth pathogen screen of wastewater, establishing the relationship between pathogen levels and traditional indicator organisms, monitoring microorganisms in air within 600 meters of the spray source, and development/validation of a microbiological dispersion model for predicting pathogen aerosol concentrations. Effluent was monitored for microbiological, chemical, and physical characteristics; extensive microorganism and dye aerosol samples were collected (77 aerosol runs). Enteroviruses were detected in air, but at a very low concentration. Conclusions: There is considerable underestimation of pathogen aerosol levels when using traditional indicators to predict human exposures to enteroviruses. Microbiological dispersion model may be used with minimal monitoring to estimate exposure. There is little correlation between wastewater levels of traditional indicators and pathogens. Microbiological wastewater aerosols are generated by spray irrigation, do survive aerosolization and can be transported to nearby populations.

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 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 Health Effects of Land Treatment written by Norman Edward Kowal and published by . This book was released on 1982 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Formula Handbook for Environmental Engineers and Scientists written by Gabriel Bitton and published by John Wiley & Sons. This book was released on 1997-10-21 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dieses nützliche Handbuch umfaßt über 200 Formeln, die von Umweltingenieuren für Problemlösungen im Bereich biologischer und biochemischer Prozesse in natürlichen und künstlich angelegten Systemen eingesetzt werden. Jeder Problemeintrag erhält eine Definition, eine Formel, Zahlenwerte, die in der Literatur genannt werden, Verweise und entsprechende Tabellen und Diagramme. Umrechnungstabellen finden sich im Anhang. (10/97)

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: