Securing Water and Wastewater Systems

Global Experiences

Author: Robert M. Clark,Simon Hakim

Publisher: Springer Science & Business Media

ISBN: 3319010921

Category: Technology & Engineering

Page: 398

View: 2628

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Urban water and wastewater systems have an inherent vulnerability to both manmade and natural threats and disasters including droughts, earthquakes and terrorist attacks. It is well established that natural disasters including major storms, such as hurricanes and flooding, can effect water supply security and integrity. Earthquakes and terrorist attacks have many characteristics in common because they are almost impossible to predict and can cause major devastation and confusion. Terrorism is also a major threat to water security and recent attention has turned to the potential that these attacks have for disrupting urban water supplies. There is a need to introduce the related concept of Integrated Water Resources Management which emphasizes linkages between land-use change and hydrological systems, between ecosystems and human health, and between political and scientific aspects of water management. An expanded water security agenda should include a conceptual focus on vulnerability, risk, and resilience; an emphasis on threats, shocks, and tipping points; and a related emphasis on adaptive management given limited predictability. Internationally, concerns about water have often taken a different focus and there is also a growing awareness, including in the US, that water security should include issues related to quantity, climate change, and biodiversity impacts, in addition to terrorism. This presents contributions from a group of internationally recognized experts that attempt to address the four areas listed above and includes suggestions as to how to deal with related problems. It also addresses the new and potentially growing issue of cyber attacks against water and waste water infrastructure including descriptions of actual attacks, making it of interest to scholars and policy-makers concerned with protecting the water supply.

Drinking Water and Health,

Author: Safe Drinking Water Committee,Board on Toxicology and Environmental Health Hazards,Commission on Life Sciences,Division on Earth and Life Studies,National Research Council

Publisher: National Academies Press

ISBN: 0309554926

Category: Science

Page: 449

View: 9280

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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.

Safe Piped Water

Managing Microbial Water Quality in Piped Distribution Systems

Author: Ainsworth R.

Publisher: World Health Organization

ISBN: 924156251X

Category: Business & Economics

Page: 147

View: 6903

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The development of pressurized pipe networks for supplying drinking-water to individual dwellings buildings and communal taps is an important component in the continuing development and health of many communities. This publication considers the introduction of microbial contaminants and growth of microorganisms in distribution networks and the practices that contribute to ensuring drinking-water safety in piped distribution systems.

Environmental Engineering

Proceedings of the 2nd National Congress on Environmental Engineering, 4-8 September 2005

Author: Lucjan Pawlowski,Marzenna R. Dudzinska,Artur Pawlowski

Publisher: CRC Press

ISBN: 9780415408189

Category: Science

Page: 536

View: 3944

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Environmental engineering protects the conditions of a safe environment, its role being crucial in eliminating ecological threats. It has an interdisciplinary character, utilising principles from biology, chemistry, biochemistry and physics to neutralize pollutants in all facets of the environment. Environmental engineering deals with a wide range of technical and technological problems, including the design and maintenance of water supply, sewage disposal, heating, ventilation and air-conditioning in buildings. This proceedings aims to assess the state of scientific research in various areas of environmental engineering; to evaluate organizational, technical and technological progress in contributing to ecological security; and to determine the place of environmental engineering in sustainable development, taking into account current political and economic conditions. Environmental Engineering is an invaluable source of information and ideas for the international environment engineering scientific community.

The Role of Colloidal Systems in Environmental Protection

Author: Monzer Fanun

Publisher: Elsevier

ISBN: 0444632840

Category: Technology & Engineering

Page: 720

View: 5707

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The Role of Colloidal Systems in Environmental Protection describes the importance of colloids in many applications that contribute to environmental protection, including drinking water and wastewater treatment, heavy metal remediation, treatment of radioactive materials, corrosion, and energy conversion. Knowledge of the physical and chemical composition of colloids is important to understand and accurately model the relevant processes. The book familiarizes the reader with the technological features of the application of colloids in environmental protection, and provides chemical engineers, researchers, and scientists in academic and corporate communities with the latest developments in this field. Each chapter covers the whole spectrum of the relevant science, from the fundamentals to applications. Provides the applied technological features of colloids in environmental protection Gives insight into the use of bio-solid colloids as contaminant carriers Covers the natural occurrence of biosurfactants in the environment and their applications Provides information on the use of nanoparticles for environmental applications Chapters written by recognized and respected experts in the field from all over the world

Natural Organic Matter in Water

Characterization and Treatment Methods

Author: Mika Sillanpää

Publisher: Butterworth-Heinemann

ISBN: 0128017198

Category: Technology & Engineering

Page: 382

View: 3510

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Approximately 77 percent of the freshwater used in the United States comes from surface-water sources and is subject to natural organic matter contamination according to the United States Geological Survey. This presents a distinct challenge to water treatment engineers. An essential resource to the latest breakthroughs in the characterization, treatment and removal of natural organic matter (NOM) from drinking water, Natural Organic Matter in Waters: Characterization and Treatment Methods focuses on advance filtration and treatment options, and processes for reducing disinfection byproducts. Based on the author’s years of research and field experience, this book begins with the characterization of NOM including: general parameters, isolation and concentration, fractionation, composition and structural analysis and biological testing. This is followed by removal methods such as inorganic coagulants, polyelectrolytes and composite coagulants. Electrochemical and membranes removal methods such as: electrocoagulation, electrochemical oxidation, microfiltration and ultrafiltration, nanofiltration and membrane fouling. Covers conventional as well as advanced NOM removal methods Includes characterization methods of NOM Explains removal methods such as: removal by coagulation, electrochemical, advanced oxidation, and integrated methods

Drinking Water Distribution Systems:

Assessing and Reducing Risks

Author: Committee on Public Water Supply Distribution Systems: Assessing and Reducing Risks,Water Science and Technology Board,Division on Earth and Life Studies,National Research Council

Publisher: National Academies Press

ISBN: 0309103061

Category: Science

Page: 404

View: 7298

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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.

Guidelines for Drinking-water Quality

Microbiological Agents in Drinking Water. Addendum

Author: World Health Organization

Publisher: World Health Organization

ISBN: 9789241545358

Category: Medical

Page: 142

View: 7414

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Annotation This addendum to the second edition of the contains reviews of five types of pathogens that occur widely in water, summarizing current knowledge on transmission, attenuation, and removal of individual pathogens. These documents supersede, and are more comprehensive than, those previously published in vols. 1 and 2 of the . There is no subject index. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com).

Sizing Water Service Lines and Meters, Third Edition (M22)

Author: American Water Works Association

Publisher: American Water Works Association

ISBN: 1625760272

Category: Technology & Engineering

Page: 296

View: 8341

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This third edition of M22 contains information needed to estimate customer demand and maximum expected flow that can be used to size new service lines and meters. This edition expands the ways to approach the sizing of water service lines and meters and offers improved methods for the sizing of dedicated irrigation meters. M22 includes a useful field method called demand profiling that can be used to evaluate actual customer use patterns and help optimize meter size selection. The data presented in M22 were obtained from field measurements, utility surveys, technical publications, and hydraulic design calculations. This manual emphasizes that utilities having more information about a specific sizing situation will result in the best sizing decision from the tap to the meter. This information has been condensed into a simplified format to assist readers in addressing most common service conditions. The methods contained in this manual are appropriate for water utility managers, engineers, planners, technicians, field operations personnel, and consultants involved with designing and constructing projects requiring water service.

Riverbank Filtration

Improving Source-Water Quality

Author: C. Ray,G. Melin,R.B. Linsky

Publisher: Springer Science & Business Media

ISBN: 0306481545

Category: Technology & Engineering

Page: 366

View: 1872

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Chittaranjan Ray, Ph. D. , P. E. University of Hawaii at Mãnoa Honolulu, Hawaii, United States Jürgen Schubert, M. Sc. Stadtwerke Düsseldorf AG Düsseldorf, Germany Ronald B. Linsky National Water Research Institute Fountain Valley, California, United States Gina Melin National Water Research Institute Fountain Valley, California, United States 1. What is Riverbank Filtration? The purpose ofthis book is to show that riverbank filtration (RBF) isa low-cost and efficient alternative water treatment for drinking-water applications. There are two immediate benefits to the increased use of RBF: Minimized need for adding chemicals like disinfectants and coagulants to surface water to control pathogens. Decreased costs to the community without increased risk to human health. Butwhat,exactly, isRBF? In humid regions, river water naturally percolates through the ground into aquifers (which are layers of sand and gravel that contain water underground) during high-flow conditions. In arid regions, most rivers lose flow, and the percolating water passes through soil and aquifer material until it reaches the water table. During these percolation processes, potential contaminants present in river water are filtered and attenuated. If there are no other contaminants present in the aquifer or ifthe respective contaminants are present at lower concentrations, the quality of water in the aquifer can be ofhigher quality than that found in theriver. In RBF, production wells — which are placed near the banks ofrivers —pump large quantities ofwater.

Ion Exchange Treatment for Water

Author: Anthony M. Wachinski

Publisher: Amer Water Works Assn

ISBN: 9781583213223

Category: Technology & Engineering

Page: 272

View: 5935

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This handbook provides project, design and consulting engineers with an up-to-date resource on the information necessary to select the appropriate ion exchanger, the form it should be operated in, the regenerant, and the concentration of regenerant. Coverage includes fundamentals of chemistry, ion exchangers, softening and demineralization techniques, and removal of nitrates, arsenic and radioactivity.

Biopolymers

Biomedical and Environmental Applications

Author: Susheel Kalia,Luc Avérous

Publisher: John Wiley & Sons

ISBN: 1118164776

Category: Technology & Engineering

Page: 642

View: 8526

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This handbook focuses on biopolymers for both environmental and biomedical applications. It shows recent advances in technology in all areas from chemical synthesis or biosynthesis to end use applications. These areas have not been covered in a single book before and they include biopolymers for chemical and biotechnological modifications, material structures, characterization, processing, properties, and applications. After the introduction which summarizes the importance of biopolymer in the market, the book covers almost all the topics related to polysaccharides, biofibers, bioplastics, biocomposites, natural rubber, gums, bacterial and blood compatible polymers, and applications of biopolymers in various fields.

Issues in Global Environment: Pollution and Waste Management: 2011 Edition

Author: N.A

Publisher: ScholarlyEditions

ISBN: 1464964866

Category: Technology & Engineering

Page: 1116

View: 3487

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Issues in Global Environment: Pollution and Waste Management: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Global Environment—Pollution and Waste Management. The editors have built Issues in Global Environment: Pollution and Waste Management: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Global Environment—Pollution and Waste Management in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Global Environment: Pollution and Waste Management: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.