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Author : W. Brewster
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)
Download or read book On Maintaining a Trace of Residual Chlorine in Water Distribution Systems written by W. Brewster and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Municipal Environmental Research Laboratory
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.F/5 ( download)
Download or read book Benefits of Maintaining a Chlorine Residual in Water Supply Systems written by Municipal Environmental Research Laboratory and published by . This book was released on 1980 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James G. Uber
Publisher : IWA Publishing (International Water Assoc)
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.F/5 ( download)
Download or read book Maintaining Distribution System Residuals Through Booster Chlorination written by James G. Uber and published by IWA Publishing (International Water Assoc). This book was released on 2004 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project was to discuss the potential advantages associated with booster disinfection, the kinetics of chlorine decay and trihalomethane (THM) formation under rechlorination conditions, and the use of network hydraulic and water quality models to locate booster disinfection stations and determine their dose characteristics. The following are highlights from the research: A laboratory procedure was proposed for analyzing chlorine decay under simulated booster conditions. An initial set of experiments evaluated disinfectant decay under booster conditions, and found it to be dependent on both the magnitude and time of the boost dose. THM formation under booster conditions showed no long-term reduction for any set of results, indicating THM formation is not solely dependent on disinfectant concentration. In booster chloramination, boosting with chlorine appeared to be very successful at producing and maintaining a low ammonia concentration by recombining with the ammonia formed from chloramine decay. A second-order model, including a reaction component that represents natural organic matter, was developed to describe chlorine decay and THM formation under booster conditions. A method was developed to determine good locations and schedules for multiple booster doses by a systematic evaluation of alternative designs using network models. By exploring the disinfection decay kinetics under rechlorination, and developing methods for booster chlorination systems design, the project results will assist utilities and consultants in making better use of booster disinfection as a residual maintenance approach. Originally published by AwwaRF for its subscribers in 2003
Author : John J. Vasconcelos
Publisher : American Water Works Association
ISBN 13 : 0898678706
Total Pages : 440 pages
Book Rating : 4.8/5 (986 download)
Download or read book Characterization and Modeling of Chlorine Decay in Distribution Systems written by John J. Vasconcelos and published by American Water Works Association. This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Public Health Service
Publisher :
ISBN 13 :
Total Pages : 986 pages
Book Rating : 4.:/5 (319 download)
Download or read book Public Health Engineering Abstracts written by United States. Public Health Service and published by . This book was released on 1958 with total page 986 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ryan Campbell
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (89 download)
Download or read book Management of Regrowth and Modeling Chlorine Residuals in the Madison Water Utility Distribution System written by Ryan Campbell and published by . This book was released on 2007 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309031982
Total Pages : 312 pages
Book Rating : 4.3/5 (9 download)
Download or read book Drinking Water and Health, written by National Research Council and published by National Academies Press. This book was released on 1982-02-01 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most recent volume in the Drinking Water and Health series contains the results of a two-part study on the toxicity of drinking water contaminants. The first part examines current practices in risk assessment, identifies new noncancerous toxic responses to chemicals found in drinking water, and discusses the use of pharmacokinetic data to estimate the delivered dose and response. The second part of the book provides risk assessments for 14 specific compounds, 9 presented here for the first time.
Author : Refet Sinem Atgin
Publisher :
ISBN 13 :
Total Pages : 84 pages
Book Rating : 4.:/5 (258 download)
Download or read book Modeling Vulnerability and Effectiveness of Chlorination in Drinking Water Distribution Systems written by Refet Sinem Atgin and published by . This book was released on 2008 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Residual chlorines are provided in water distribution systems to maintain the inactivation of pathogens intruded into network. The effectiveness of chlorine residuals on pathogen removal can be determined using system vulnerability assessment. The effectiveness of chlorination was determined separately and it was determined as higher than that of the distribution and dilution for two case networks studied. CT (Chlorine Residual Concentration x Contact Time) value which is used as an important criterion to assess the inactivation of pathogens, is complicated to be determined for distribution networks due to varying residence times and chlorine concentrations. The relation of CT value with the removal ratio of pathogens was used to estimate CT value for distribution networks. The results of case studies indicate that CT value determined for a distribution network does not only depend on concentration and contact time of chlorine residuals but also temperature, pH and intrusion location and duration.
Author :
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.:/5 (3 download)
Download or read book Environmental Health Perspectives written by and published by . This book was released on 1993 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zaid K. Chowdhury
Publisher : IWA Publishing
ISBN 13 : 9781843399742
Total Pages : 0 pages
Book Rating : 4.3/5 (997 download)
Download or read book Assessment of Chloramine and Chlorine Residual Decay in the Distribution System written by Zaid K. Chowdhury and published by IWA Publishing. This book was released on 2007-03-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintaining chlorine and chloramine residual is a key factor that determines potability of distributed water. Decay of these disinfectants is affected by various water quality and infrastructure related factors. Understanding the decay of residuals in the distribution system is critical with respect to safe delivery of drinking water and in developing water quality models that can be used by utilities for the operation of potable water delivery systems. In order to comply with microbial and disinfection byproduct (M/DBP) regulations, water suppliers are continually investing in treatment processes for achieving greater levels of inactivation and DBP precursor removal. As a result of these changes in water quality, maintaining a disinfectant residual in the distribution system can be challenging Bench-scale testing has been used to determine the effect of advanced treatment (enhanced coagulation, granular activated carbon adsorption, ozonation, biofiltration, and ultraviolet irradiation) on chlorine and chloramine decay. Additional studies examine the effects of disinfectant dose, temperature, pH, blending, and rechlorination. The effects of water quality on pipe-wall demand were evaluated using the distribution system simulator at the U.S. Environmental Protection Agency's Test and Evaluation Center. Several models are developed regarding disinfectant decay, making it easier to predict chlorine demand after changes in treatment. The multi-species water quality analysis and network path analysis extensions to EPANET will make the modeling package more robust and will allow utilities to predict chlorine residual at any point in their distribution system with greater confidence.
Author :
Publisher :
ISBN 13 :
Total Pages : 684 pages
Book Rating : 4.:/5 (31 download)
Download or read book Journal of the American Water Works Association written by and published by . This book was released on 1975 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volumes for 2012- contain only executive summaries of articles.
Author : M. C. a. o Snead
Publisher :
ISBN 13 :
Total Pages : 175 pages
Book Rating : 4.:/5 (475 download)
Download or read book Benefits of Maintaining and Chlorine Residual in Water Supply Systems written by M. C. a. o Snead and published by . This book was released on 1980 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Navy
Publisher :
ISBN 13 :
Total Pages : 496 pages
Book Rating : 4.F/5 ( download)
Download or read book Medical News Letter written by United States. Navy and published by . This book was released on 1958 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 : 9789240687936
Total Pages : 0 pages
Book Rating : 4.6/5 (879 download)
Download or read book Guide to Ship Sanitation 3rd Edition written by and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of the Guide to Ship Sanitation presents the public health significance of ships in terms of disease and highlights the importance of applying appropriate control measures. It is intended to be a basis for the development of national approaches to controlling the hazards, providing a framework for policy-making and local decision-making. It may also be used as a reference for regulators, ship operators and ship builders as well as for assessing the potential health impact of projects involving the design of ships.
Author : United States. Public Health Service
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.F/5 ( download)
Download or read book Community Water Supply Study, Analysis of National Survey Findings written by United States. Public Health Service and published by . This book was released on 1970 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309103061
Total Pages : 405 pages
Book Rating : 4.3/5 (91 download)
Download or read book Drinking Water Distribution Systems written by National Research Council and published by National Academies Press. This book was released on 2007-01-22 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protecting and maintaining water distributions systems is crucial to ensuring high quality drinking water. Distribution systems-consisting of pipes, pumps, valves, storage tanks, reservoirs, meters, fittings, and other hydraulic appurtenances-carry drinking water from a centralized treatment plant or well supplies to consumers' taps. Spanning almost 1 million miles in the United States, distribution systems represent the vast majority of physical infrastructure for water supplies, and thus constitute the primary management challenge from both an operational and public health standpoint. Recent data on waterborne disease outbreaks suggest that distribution systems remain a source of contamination that has yet to be fully addressed. This report evaluates approaches for risk characterization and recent data, and it identifies a variety of strategies that could be considered to reduce the risks posed by water-quality deteriorating events in distribution systems. Particular attention is given to backflow events via cross connections, the potential for contamination of the distribution system during construction and repair activities, maintenance of storage facilities, and the role of premise plumbing in public health risk. The report also identifies advances in detection, monitoring and modeling, analytical methods, and research and development opportunities that will enable the water supply industry to further reduce risks associated with drinking water distribution systems.
Author :
Publisher :
ISBN 13 :
Total Pages : 448 pages
Book Rating : 4.3/5 (91 download)
Download or read book United States Navy Medical Newsletter written by and published by . This book was released on 1958 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
