Download or read book Impacts of Fire Flow on Distribution System Water Quality Design and Operation written by Jerry K. Snyder and published by American Water Works Association. This book was released on 2002 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report, co-sponsored by the American Water Works Association's Research Foundation and Kiwa of the Netherlands, evaluates the impacts of fire flow requirements on distribution system design and water quality using hypothetical and actual case studies. The report also evaluates alternatives to m
Download or read book Distribution Water Quality Issues Related to New Development Or Low Usage written by Yakir J. Hasit and published by American Water Works Association. This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many water utilities deal with water quality problems in the distribution system due to low water usage. This study uncovers the many problems of low usage and reports on the variety of mitigation practices used by North American utilities. An included CD-ROM provides decision support software to help utilities systematically weigh the costs and benefits of a variety of best management practices (BMPs) for mitigating the water quality issues caused by low usage and thus cutting down on customer complaints and higher distribution costs.
Download or read book Development of Distribution System Water Quality Optimization Plans written by Melinda J. Friedman and published by American Water Works Association. This book was released on 2005 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: CD-ROM contains chapter 4 and appendices A & B.
Download or read book Water Supply Systems and Evaluation Methods Volume I Water Supply System Concepts written by and published by FEMA. This book was released on with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Fundamentals and Control of Nitrification in Chloraminated Drinking Water Distribution Systems M56 written by AWWA Staff and published by American Water Works Association. This book was released on 2011-01-12 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This brand new manual was written because of the increased use of chloramine as a residual disinfectant in drinking water distribution systems and the ubiquitous presence of nitrifying bacteria in the environment. Chapters cover background information on the occurrence and microbiology of nitrification in various water environments and provide current practical approaches to nitrification prevention and response. This manual provides a compendium of the current state-of-the-art knowledge, however with quickly developing new advances in nitrification, more writings will be forthcoming. Each chapter can be read independently.
Download or read book Discolouration in Drinking Water Systems written by Jan Vreeburg and published by IWA Publishing. This book was released on 2010-08-14 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special Offer: KWR Drinking Water Treatment Set - Buy all five books together and save a total £119! Discolouration in Drinking Water Systems analyses the particle-related processes involved in the generation of discolouration problems in the network. To this end, new measuring methods have been developed such as continuous monitoring of turbidity and particle count, the Resuspension Potential Method (RPM), and the Time Integrated Large Volume Sampler (TILVS). With these new methods the discolouration problem can be seen as related to loose deposits in the network. The incidental re-suspension of accumulated loose particles is the main cause of discolouration events in the network. The origin of the particles is mainly the treated drinking water, followed by processes in the network like post-flocculation, corrosion and leaching and biological growth and re-growth. Irrespective of the cause of the particles the accumulation to layers of loose deposits can initiate water quality problems. This book looks at how managing the accumulation is possible through controlling the velocity in the pipes and through removing the loose deposits through effective cleaning.
Download or read book Encyclopedia of Environmental Health written by and published by Elsevier. This book was released on 2019-08-22 with total page 4896 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Environmental Health, Second Edition, Six Volume Set presents the newest release in this fundamental reference that updates and broadens the umbrella of environmental health, especially social and environmental health for its readers. There is ongoing revolution in governance, policies and intervention strategies aimed at evolving changes in health disparities, disease burden, trans-boundary transport and health hazards. This new edition reflects these realities, mapping new directions in the field that include how to minimize threats and develop new scientific paradigms that address emerging local, national and global environmental concerns. Represents a one-stop resource for scientifically reliable information on environmental health Fills a critical gap, with information on one of the most rapidly growing scientific fields of our time Provides comparative approaches to environmental health practice and research in different countries and regions of the world Covers issues behind specific questions and describes the best available scientific methods for environmental risk assessment
Download or read book Water Supply Systems and Evaluation Methods Volume II Water Supply Evaluation Methods written by and published by FEMA. This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Growth in Drinking Water Supplies written by Dick van der Kooij and published by IWA Publishing. This book was released on 2013-09-14 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintaining the microbial quality in distribution systems and connected installations remains a challenge for the water supply companies all over the world, despite many years of research. This book identifies the main concerns and knowledge gaps related to regrowth and stimulates cooperation in future research. Microbial Growth in Drinking Water Supplies provides an overview of the regrowth issue in different countries and the water quality problems related to regrowth. The book assesses the causes of regrowth in drinking water and the prevention of regrowth by water treatment and distribution. Editors: Dirk van der Kooij and Paul W.J.J. van der Wielen, KWR Watercycle Research Institute, The Netherlands
Download or read book Water 4 0 written by David Sedlak and published by Yale University Press. This book was released on 2014-01-28 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: The little-known story of the systems that bring us our drinking water, how they were developed, the problems they are facing, and how they will be reinvented in the near future
Download or read book Estimating Health Risks from Infrastructure Failures written by and published by American Water Works Association. This book was released on 2006 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Health risks from infrastructure failures are not well understood, despite the potential widespread introduction of chemical, microbial, and physical contaminants, as well as service disruptions. This study gathered input from various experts to define these issues. A strategy for intervention and mitigation was developed along with and mechanisms for timely, direct, inter-agency communication, coordination, and collaboration.
Download or read book Improving the Nation s Water Security written by National Research Council and published by National Academies Press. This book was released on 2007-06-15 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concern over terrorist attacks since 2001 has directed attention to potential vulnerabilities of the nation's water and wastewater systems. The Environmental Protection Agency (EPA), which leads federal efforts to protect the water sector, initiated a research program in 2002 to address immediate research and technical support needs. This report, conducted at EPA's request, evaluates research progress and provides a long-term vision for EPA's research program. The report recommends that EPA develop a strategic research plan, address gaps in expertise among EPA program managers and researchers, and improve its approaches to information dissemination. The report recommends several high-priority research topics for EPA, including conducting empirical research in behavioral science to better understand how to prepare people for water security incidents.
Download or read book Transient Effects of Fire Flow on Distribution Systems written by Muhammad Shahid Nadeem Mian and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire flows have a significant impact on the design and operation of a water distribution system. Transient pressure surges are initiated by the operation of a hydrant and by the development of an abnormal water demand for fire fighting. Fire flows can create additional localized stress on the distribution network and may induce undesirable areas of low pressures, which may be either transient or sustained in nature. Many factors contribute to the intensity of transient surges including the size and layout of the network, the location of the operating hydrant, the hydrant valve operation, the supply or delivery rate, the presence of multiple hydrant operations, the water carrying capacity of the network, and the pipeline material. The Insurance Services Office method provides a good estimate for fire flow rates and many agencies endorse this method. The role of computer simulation and optimization helps greatly to evaluate all aspects of a distribution system.
Download or read book Comprehensive Water Quality and Purification written by and published by Elsevier. This book was released on 2013-09-24 with total page 1537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Water Quality and Purification, Four Volume Set provides a rich source of methods for analyzing water to assure its safety from natural and deliberate contaminants, including those that are added because of carelessness of human endeavors. Human development has great impact on water quality, and new contaminants are emerging every day. The issues of sampling for water analysis, regulatory considerations, and forensics in water quality and purity investigations are covered in detail. Microbial as well as chemical contaminations from inorganic compounds, radionuclides, volatile and semivolatile compounds, disinfectants, herbicides, and pharmaceuticals, including endocrine disruptors, are treated extensively. Researchers must be aware of all sources of contamination and know how to prescribe techniques for removing them from our water supply. Unlike other works published to date that concentrate on issues of water supply, water resource management, hydrology, and water use by industry, this work is more tightly focused on the monitoring and improvement of the quality of existing water supplies and the recovery of wastewater via new and standard separation techniques Using analytical chemistry methods, offers remediation advice on pollutants and contaminants in addition to providing the critical identification perspective The players in the global boom of water purification are numerous and varied. Having worked extensively in academia and industry, the Editor-in-Chief has been careful about constructing a work for a shared audience and cause
Download or read book Computer Modeling of Free Surface and Pressurized Flows written by M. Hanif Chaudhry and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 737 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computers are widely used for the analysis, design, and operation of water resource projects. This gives accurate results, allowing the analysis of complex systems which may not have been possible otherwise, and the investigation and comparison of several different alternatives in a short time, thereby reducing the project costs, optimizing design, and efficient utilization of resources. This volume compiles an edited version of the lecture notes specially prepared by 14 well-known European and North American researchers. Part I deals with free-surface flows. Governing equations are derived and their solution by the finite-difference, finite-element, and boundary-integral methods are discussed. Then, turbulence models, three-dimensional models, dam-break flow models, sediment transport models, and flood routing models are presented. Part II is related to the modeling of steady and transient pressurized flows. Governing equations for both single and two-component flows are derived and numerical methods for their solution are presented. The modeling of water quality in pipe networks, of cooling water systems, and slow and rapid transients is then discussed.
Download or read book Water Transmission and Distribution written by American Water Works Association and published by American Water Works Association. This book was released on 2003 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water distribution systems are made up of pipe, valves and pumps through which treated water is moved from the treament plant to homes, offices, industries, and other consumers. The types of materials and equipment used by each water system are usually governed by local conditions, past practices, and economics. Consequently, drinking water professionals must be knowledgeable about common types of equipment and operating methods that are available. Completely revised and updated, Water transmission and distribution includes information on the following: distribution system design and operation and maintenance ; piping materials ; valves, pumps, and water meters ; water main installation ; backfilling, main testing, and installation safety ; fire hyfrants ; water storage ; water services ; cross-connection control ; motors and engines ; instrumentation and control ; information management and public relations.--Cover page [4].
