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:
Download or read book Formation and Decay of Disinfection By products in the Distribution System written by and published by American Water Works Association. This book was released on 2006 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project was to understand the formation and decay of selected DBPs in full-scale distribution systems focusing on the four THMs and the nine HAAs, as well as individual THM and HAA species. Because of its critical nature, NDMA was also included. The project objectives were: evaluate the critical factors that affect THM and HAA behavior in distribution systems; determine the fate and behavior of NDMA in distribution systems; evaluate the effect of pipe material and diameter on the fate of DBPs in distribution systems; examine the effect of storage reservoirs / tanks and booster chlorination stations on THM, HAA and NDMA concentrations; evaluate the changes in DBP concentrations and speciation when a system seasonally switches from chloramines to free chlorine to limit potential nitrification episodes....
Download or read book Predictive Models for Water Quality in Distribution Systems written by J. Clement and published by American Water Works Association. This book was released on 2005-04-30 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are two groups of specialists involved in the development and application of water quality models, each of which have a different perspective on the use of models: Academics and scientists - chemistry specialists and microbiologists who develop the models. Practitioners - modelers and distribution engineers who use them to solve problems. There are limitations and constraints in the characterization of the underlying processes and the practical application of models to distribution networks, which require further research. The objectives of the research were to characterize the current state of predictive distribution system water quality models and to identify critical research needs for their improvement. The project reviewed both the development and application of models. The report is intended to both steer future research and to act as a general reference on water quality modeling. The report combines a literature review with the practical experience of the project team. The content of a draft report was discussed at an international workshop attended by academics, engineers, scientists, and hydraulic modelers with the objective of agreeing on specific research needs necessary to improve predictive modeling for water quality in distribution systems. The conclusions of the report are derived from the workshop and form the basis of 11 specific research briefs that have been submitted to AwwaRF for consideration of funding. Researchers often focus on modeling the individual processes that control water quality rather than fully modeling water quality throughout distribution systems. For these "process models" to be applied to real distribution networks, they need to be extended to take in account the physical characteristics of the system?the special and temporal variations in flow, velocity and water age, and the effects of mixing water that has traveled along different flow paths.
Download or read book Urban Water Systems Floods II written by S. Hernández and published by WIT Press. This book was released on 2018-08-21 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developing an improved understanding of emerging flood risk management and urban water management was the goal set for research presented at the 6th International Conference on Flood and Urban Water Management, held in A Coruña, Spain. The published papers look to solve various challenges in this field by drawing on the expertise of numerous disciplines and considering a range of responses. Flooding is a global phenomenon that claims numerous lives worldwide each year. When flooding occurs in urban areas, it can cause substantial damage to property as well as threaten human life. In addition, many more people must endure the homelessness, upset and disruption that are left in the wake of floods. The increased frequency of flooding in the last few years, coupled with climate change predictions and urban development, suggest that these impacts are set to worsen in the future. How we respond and importantly, adapt to these challenges is key to developing our long-term resilience at the property, community and city scale. Apart from the physical damage to buildings, contents and loss of life, which are the most obvious, impacts of floods upon households, other more indirect losses are often overlooked. These indirect and intangible impacts are generally associated with disruption to normal life as well as long-term health issues including community displacements and stress-related illnesses. Flooding represents a major barrier to the alleviation of poverty in many parts of the developing world, where vulnerable communities are often exposed to sudden and life-threatening events. As our cities continue to expand, their urban infrastructures need to be re-evaluated and adapted to new requirements related to the increase in population and the growing areas under urbanization. The papers contained in this book consider these problems and deals with two main urban water topics: water supply systems and urban drainage.
Download or read book Guidance Manual for Monitoring Distribution System Water Quality written by Gregory J. Kirmeyer and published by American Water Works Association. This book was released on 2002 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides guidelines for developing a water quality monitoring program specific to the distribution system of a water utility. The report identifies monitoring objectives, addresses common program design issues, and develops protocols for monitoring programs. Topics include nitrification, booster chl
Download or read book Guidance Manual for Maintaining Distribution System Water Quality written by Gregory J. Kirmeyer and published by American Water Works Association. This book was released on 2000 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report of multi-disciplinary team of engineers and practitioners from a research project commissioned by the Association to create a resource to help water utilities operate and maintain water distributions systems to prevent water quality from deteriorating. They look at prevention programs, qu
Download or read book Drought Management Planning in Water Supply Systems written by Enrique Cabrera and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decade many countries in the world have experienced droughts, with severe impacts on water urban supply systems. Because droughts are natural phenomena, water utilities must design and implement drought management plans. This topic was selected for the International Course on Drought Management Planning in Water Supply Systems, which took place in Valencia, Spain, on 9-12 December 1997, and was hosted by the Universidad Internacional Menéndez y Pelayo (UIMP). The contributions in this book have been carefully selected and presented in four sections: Introduction Water Supply Systems Modernization Drought Management in an Urban Context Practical Cases (Israel, USA, Italy, Spain) To achieve a well-balanced approach, authors were invited from academia as well as from consultancies and water utilities, and have wide experience in the subject. The book is mainly aimed at water supply engineers, working in utilities and consultancies.
Download or read book Water Quality Modeling of Distribution System Storage Facilities written by W. M. Grayman and published by American Water Works Association. This book was released on 2000 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Advances in Mechanical Engineering written by Seshadev Sahoo and published by Springer Nature. This book was released on with total page 739 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 Fiscal Year 1999 EPA R D Budget Authorization written by United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment and published by . This book was released on 1998 with total page 1434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fiscal Year 2001 Budget Authorization Request written by United States. Congress. House. Committee on Science. Subcommittee on Energy and Environment and published by . This book was released on 2001 with total page 1612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Urban Water Engineering and Management written by Mohammad Karamouz and published by CRC Press. This book was released on 2010-01-20 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the latest developments research, this book delineates a systems approach urban water hydrology, engineering, planning, and management. It covers a range of classic urban water management issues such as the modeling of urban water cycles, urban water supply and distribution systems, demand forecasting, wastewater and storm water collection and treatment.
Download or read book National Plan for Information Systems Protection written by and published by . This book was released on 2000 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Impacts from Blending Multiple Water Types written by Joanna R. Peet and published by American Water Works Association. This book was released on 2001 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This project has examined the impacts of blending waters from varied sources on drinking water quality and the distribution network, with the subsequent development of a tool for predicting the properties and effects of final blended waters ... The final product of the research is a computer model that will enable water managers to estimate the potential effects of any blending strategy currently employed or under consideration. " -- Executive summary.
Download or read book Research plan for microbial pathogens and disinfection byproducts in drinking water written by and published by DIANE Publishing. This book was released on with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:
