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State Of Technology For Rehabilitation Of Water Distribution Systems
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Book Synopsis State of Technology for Rehabilitation of Water Distribution Systems by : U S Environmental Protection Agency
Download or read book State of Technology for Rehabilitation of Water Distribution Systems written by U S Environmental Protection Agency and published by CreateSpace. This book was released on 2014-08-02 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impact that the lack of investment in water infrastructure will have on the performance of aging underground infrastructure over time is well documented and the needed funding estimates range as high as $325 billion over the next 20 years. With the current annual replacement rate averaging 0.5%, pipes would be expected to last for 200 years, but most pipes are designed for 50 or 100 year life cycles. While this replacement rate may be sufficient in the immediate term because pipes are still relatively young, as systems grow older, the necessary replacement rates will inevitably increase. In addition to the necessary funding, congestion above and below ground is making the replacement of water mains more difficult for utility owners as is the lack of public tolerance for the disruption caused by construction work. There is an increasing availability of technologies for rehabilitation of existing pipes, which provides solutions that minimize or alleviate these problems, while providing realistic and potentially cost-effective alternatives to traditional open cut replacement.
Book Synopsis State of Technology Review Report on Rehabilitation of Wastewater Collection and Water Distribution Systems by : Raymond Sterling
Download or read book State of Technology Review Report on Rehabilitation of Wastewater Collection and Water Distribution Systems written by Raymond Sterling and published by . This book was released on 2009 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Drinking Water Distribution Systems by : National Research Council
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.
Book Synopsis Deterioration and Optimal Rehabilitation Modelling for Urban Water Distribution Systems by : Yi Zhou
Download or read book Deterioration and Optimal Rehabilitation Modelling for Urban Water Distribution Systems written by Yi Zhou and published by CRC Press. This book was released on 2018-05-03 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pipe failures in water distribution systems can have a serious impact and hence it’s important to maintain the condition and integrity of the distribution system. This book presents a whole-life cost optimisation model for the rehabilitation of water distribution systems. It combines a pipe breakage number prediction model with a pipe criticality assessment model, which enables the creation of a well-constructed and more tightly constrained optimisation model. The pipe breakage number prediction model combines information on the physical characteristics of the pipes with historical information on breakage and failure rates. A weighted multiple nonlinear regression analysis is applied to describe the condition of different pipe groups. The criticality assessment model combines a pipe’s condition with its hydraulic significance through a modified TOPSIS. This model enables the optimisation to focus its efforts on those important pipes. The whole life cost optimal rehabilitation model is a multiple-objective and multiple-stage model, which provides a suite of rehabilitation decisions that minimise the whole life cost while maximising its long-term performance. The optimisation model is solved using a modified NSGA-II. The utility of the developed models is that it allows decision makers to prioritize their rehabilitation strategy in a proactive and cost-effective manner.
Book Synopsis Assessment and Renewal of Water Distribution Systems by : Neil S. Grigg
Download or read book Assessment and Renewal of Water Distribution Systems written by Neil S. Grigg and published by International Water Assn. This book was released on 2005 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a synthesis of knowledge and includ
Author :American Water Works Association Publisher :American Water Works Association ISBN 13 :1583210261 Total Pages :76 pages Book Rating :4.5/5 (832 download)
Book Synopsis Rehabilitation of Water Mains by : American Water Works Association
Download or read book Rehabilitation of Water Mains written by American Water Works Association and published by American Water Works Association. This book was released on 2001 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: P. 16.
Book Synopsis Water Distribution Systems Handbook by :
Download or read book Water Distribution Systems Handbook written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation All-in-one, state-of-the-art guide to safe drinking water Civil engineers and anyone else involved in any way with the design, analysis, operation, maintenance or rehabilitation of water distribution systems will find practical guidance in Water Distribution SystemsHandbook. Experts selected by Handbook editor Larry W. Mays provide historical, present day, and future perspectives, as well as state-of-the-art details previously available only in specialized journals. You get a comprehensively detailed exploration of every facet of the hydraulics ofpressurized flow; piping design and pipeline systems; storage issues; reliability analysis and distribution, and more. Detailed information on the latest technology contributions and on enhancements to the EPANETmodel are included. You'll also find case studies that range from the small municipal systems found in every U.S. town, to large systems common to great urban centers like New York, London and Paris.
Book Synopsis Advanced Hydroinformatic Techniques for the Simulation and Analysis of Water Supply and Distribution Systems by : Manuel Herrera
Download or read book Advanced Hydroinformatic Techniques for the Simulation and Analysis of Water Supply and Distribution Systems written by Manuel Herrera and published by MDPI. This book was released on 2018-07-19 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Advanced Hydroinformatic Techniques for the Simulation and Analysis of Water Supply and Distribution Systems" that was published in Water
Book Synopsis Comprehensive Water Quality and Purification by :
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
Book Synopsis Water Distribution System Handbook by : Larry W. Mays
Download or read book Water Distribution System Handbook written by Larry W. Mays and published by McGraw Hill Professional. This book was released on 1999-10-21 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: All-in-one, state-of-the-art guide to safe drinking water Civil engineers and anyone else involved in any way with the design, analysis, operation, maintenance or rehabilitation of water distribution systems will find practical guidance in Water Distribution Systems Handbook. Experts selected by Handbook editor Larry W. Mays provide historical, present day, and future perspectives, as well as state-of-the-art details previously available only in specialized journals. You get a comprehensively detailed exploration of every facet of the hydraulics of pressurized flow; piping design and pipeline systems; storage issues; reliability analysis and distribution, and more. Detailed information on the latest technology contributions and on enhancements to the EPANET model are included. You'll also find case studies that range from the small municipal systems found in every U.S. town, to large systems common to great urban centers like New York, London and Paris.
Book Synopsis Advances in Building Services Engineering by : Ioan Sarbu
Download or read book Advances in Building Services Engineering written by Ioan Sarbu and published by Springer Nature. This book was released on 2021-01-04 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive, systematic overview of original theoretical, experimental, and numerical studies in the building services engineering domain. It brings together different strands of the topic, guided by the two key features of energy savings and reduction of the pollutant emissions. Technical, economic, and energy efficiency aspects related to the design, modelling, optimisation, and operation of diverse building services systems are explored. This book includes various theoretical studies, numerical and optimisation models, experiments, and applications in this field, giving an emphasis to: indoor environment quality assurance; energy analysis, modelling, and optimisation of heating systems; improving the energy performance of refrigeration and air-conditioning systems; valorising the solar and geothermal energies; analysis of thermal energy storage technologies; hydraulic simulation and optimisation of water distribution systems; and improving the energy efficiency of water pumping. With 11 pedagogically structured chapters, containing numerous illustrations, tables, and examples, this book provides researchers, lecturers, engineers, and graduate students with a thorough guide to building service engineering.
Book Synopsis Analysis of Water Distribution Systems by : Thomas M. Walski
Download or read book Analysis of Water Distribution Systems written by Thomas M. Walski and published by Van Nostrand Reinhold Company. This book was released on 1984 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Decision Support Model for the Investment Planning of the Reconstruction and Rehabilitation of Mature Water Distribution Systems by : Fadi Antoun Karaa
Download or read book A Decision Support Model for the Investment Planning of the Reconstruction and Rehabilitation of Mature Water Distribution Systems written by Fadi Antoun Karaa and published by . This book was released on 1984 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Distribution Network Rehabilitation by : Yehuda Kleiner
Download or read book Water Distribution Network Rehabilitation written by Yehuda Kleiner and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most expensive component of a water supply system is the distribution network. Aging water supply infrastructure, coupled with the continuous stress placed on the pipes by operational and environmental conditions, have led to system deterioration which manifests itself in increased operation and maintenance costs, water losses, reduction in the quality of service and reduction in the quality of water supplied. In this thesis, a methodology is proposed to select, for each pipe in an existing network, the rehabilitation alternative and the time of its implementation, so as to minimize the cost of the rehabilitation investment and all maintenance costs over a pre-defined time horizon and subject to certain constraints. The methodology explicitly considers the deterioration over time of both the structural integrity and the hydraulic capacity of every pipe in the system. The cost associated with each pipe in the network is calculated as the present value of an infinite stream of costs. The proposed method, named the multistage network rehabilitation analysis procedure (MNRAP) is based on a dynamic programming approach combined with partial and (sometimes) implicit enumeration schemes. A computer program was developed to implement the methodology. Subsequently, the validity of the MNRAP was established in two ways: (1) Some simple systems were exhaustively enumerated for all possible combinations of rehabilitation alternatives selection and scheduling, and their minimum cost sequences were compared to those obtained by applying MNRAP. An excellent agreement was demonstrated between the two sets of results. (2) A study was conducted in which six water utility managers from the Greater Toronto Area and the Region of Waterloo (the participants) were presented with a sample water distribution system including all pertinent data that would typically be available when preparing a long-term rehabilitation program. The participants were required to implement their best engineering judgment and analysis tools in determining an optimal rehabilitation policy, subject to stated constraints. These policies were then compared to that obtained by the MNRAP. The comparison demonstrated the advantages of MNRAP over existing analysis practices; (a) in its comprehensiveness and (b) in the explicit, robust manner with which the economics and the hydraulics of the water distribution system are simultaneously considered over a planning time horizon. In conclusion, the MNRAP promises to provide a valuable decision support system for engineers and decision makers in devising long-term network rehabilitation plans.
Book Synopsis Improving Water Supply Networks: Fit for Purpose Strategies and Technologies by : Stuart Hamilton
Download or read book Improving Water Supply Networks: Fit for Purpose Strategies and Technologies written by Stuart Hamilton and published by IWA Publishing. This book was released on 2021-03-15 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowing how to manage the losses from water supply networks and how to get to the next level in bettering your system is a major problem and one that is most common in the majority of water companies worldwide. Sometimes water companies set their sights too high and cannot deliver due to non-realistic targets setting. Of course this is considered or seen as a failure within the company or country when it is really just exceeding expectations of what can be delivered. The aim of System Losses from Water Supply Networks is to assist water companies to identify where they are on the ‘water loss ladder’ and what is required to move to the next level. The book will provide an understanding of what the water companies need to achieve and where they should be aiming for in their efforts to reduce water losses. The book provides useful and practical information on non-revenue water (NRW) issues and solutions enriched with relevant case studies.
Book Synopsis Performance Indicators for Water Supply Services by : Helena Alegre
Download or read book Performance Indicators for Water Supply Services written by Helena Alegre and published by IWA Publishing. This book was released on 2016-09-15 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IWA Performance Indicator System for water services is now recognized as a worldwide reference. Since it first appearance in 2000, the system has been widely quoted, adapted and used in a large number of projects both for internal performance assessment and metric benchmarking. Water professionals have benefited from a coherent and flexible system, with precise and detailed definitions that in many cases have become a standard. The system has proven to be adaptable and it has been used in very different contexts for diverse purposes. The Performance Indicators System can be used in any organization regardless of its size, nature (public, private, etc.) or degree of complexity and development. The third edition of Performance Indicators for Water Supply Services represents a further improvement of the original manual. It contains a reviewed and consolidated version of the indicators, resulting from the real needs of water companies worldwide that were expressed during the extensive field testing of the original system. The indicators now properly cover bulk distribution and the needs of developing countries, and all definitions have been thoroughly revised. The confidence grading scheme has been simplified and the procedure to assess the results- uncertainty has been significantly enhanced. In addition to the updated contents of the original edition, a large part of the manual is now devoted to the practical application of the system. Complete with simplified step-by-step implementation procedures and case studies, the manual provides guidelines on how to adapt the IWA concepts and indicators to specific contexts and objectives. This new edition of Performance Indicators for Water Supply Services is an invaluable reference source for all those concerned with managing the performance of the water supply industry, including those in the water utilities as well as regulators, policy-makers and financial agencies.
Book Synopsis Risk Management of Water Supply and Sanitation Systems by : Petr Hlavinek
Download or read book Risk Management of Water Supply and Sanitation Systems written by Petr Hlavinek and published by Springer Science & Business Media. This book was released on 2009-04-28 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each year more than 200 million people are affected by floods, tropical storms, droughts, earthquakes, and also operational failures, wars, terrorism, vandalism, and accidents involving hazardous materials. These are part of the wide variety of events that cause death, injury, and significant economic losses for the countries affected. In an environment where natural hazards are present, local actions are decisive in all stages of risk management: in the work of prevention and mitigation, in rehabilitation and reconstruction, and above all in emergency response and the provision of basic services to the affected population. Commitment to systematic vulnerability reduction is crucial to ensure the resilience of communities and populations to the impact of natural and manmade hazards. Current challenges for the water and sanitation sector require an increase in sustainable access to water and sanitation services in residential areas, where natural hazards pose the greatest risk. In settlements located on unstable and risk-prone land there is growing environmental degradation coupled with extreme conditions of poverty that increase vulnerability. The development of local capacity and risk management play vital roles in obtaining sustainability of water and sanitation systems as well as for the communities themselves. Unfortunately water may also represent a potential target for terrorist activity or war conflict and a deliberate contamination of water is a potential public health threat. An approach which considers the needs of communities and institutions is particularly important in urban areas affected by armed conflict. Risk management for large rehabilitation projects has to deal with major changes caused by conflict: damaged or destroyed infrastructure, increased population, corrupt or inefficient water utilities, and impoverished communities. Water supply and sanitation are amongst the first considerations in disaster response. The greatest water-borne risk to health in most emergencies is the transmission of faecal pathogens, due to inadequate sanitation, hygiene and protection of water sources. However, some disasters, including those involving damage to chemical and nuclear industrial installations, or involving volcanic activity, may create acute problems from chemical or radiological water pollution. Sanitation includes safe excreta disposal, drainage of wastewater and rainwater, solid waste disposal and vector control. This book is based on the discussions and papers prepared for the NATO Advanced Research Workshop that took place in Ohrid, Macedonia under the auspices of the NATO Security Through Science Programme and addressed problems Risk management of water supply and sanitation systems impaired by operational failures, natural disasters and war conflicts. The main purpose of the workshop was to critically assess the existing knowledge on Risk management of water supply and sanitation systems, with respect to diverse conditions in participating countries, and promote close co-operation among scientists with different professional experience from different countries. The ARW technical program comprised papers on 4 topics, : (a) Vulnerability of Wastewater and Sanitation Systems, (b) Vulnerability of Drinking Water Systems, (c) Emergency response plans, and (d) Case studies from regions affected by Drinking Water System, Wastewater and Sanitation System failures.
