Management of Legionella in Water Systems

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Publisher : National Academies Press
ISBN 13 : 030949382X
Total Pages : 291 pages
Book Rating : 4.3/5 (94 download)

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Book Synopsis Management of Legionella in Water Systems by : National Academies of Sciences, Engineering, and Medicine

Download or read book Management of Legionella in Water Systems written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-02-20 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Legionnaires' disease, a pneumonia caused by the Legionella bacterium, is the leading cause of reported waterborne disease outbreaks in the United States. Legionella occur naturally in water from many different environmental sources, but grow rapidly in the warm, stagnant conditions that can be found in engineered water systems such as cooling towers, building plumbing, and hot tubs. Humans are primarily exposed to Legionella through inhalation of contaminated aerosols into the respiratory system. Legionnaires' disease can be fatal, with between 3 and 33 percent of Legionella infections leading to death, and studies show the incidence of Legionnaires' disease in the United States increased five-fold from 2000 to 2017. Management of Legionella in Water Systems reviews the state of science on Legionella contamination of water systems, specifically the ecology and diagnosis. This report explores the process of transmission via water systems, quantification, prevention and control, and policy and training issues that affect the incidence of Legionnaires' disease. It also analyzes existing knowledge gaps and recommends research priorities moving forward.

Controlling Disinfection By-products and Microbial Contaminants in Drinking Water

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Publisher : DIANE Publishing
ISBN 13 : 142890073X
Total Pages : 330 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Controlling Disinfection By-products and Microbial Contaminants in Drinking Water by : Robert M. Clark

Download or read book Controlling Disinfection By-products and Microbial Contaminants in Drinking Water written by Robert M. Clark and published by DIANE Publishing. This book was released on 2001 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Water Treatment Manual

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Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (932 download)

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Book Synopsis Water Treatment Manual by :

Download or read book Water Treatment Manual written by and published by . This book was released on 19?? with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Long-Term Effects of Disinfection Changes on Water Quality

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Publisher : American Water Works Association
ISBN 13 : 1583215352
Total Pages : 316 pages
Book Rating : 4.5/5 (832 download)

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Book Synopsis Long-Term Effects of Disinfection Changes on Water Quality by : John E. Dyksen

Download or read book Long-Term Effects of Disinfection Changes on Water Quality written by John E. Dyksen and published by American Water Works Association. This book was released on 2007 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to many U.S. water utilities that are considering changing disinfectants from chlorine to alternative disinfectants, this research has been undertaken to gain knowledge of long-term effects.

Heterotrophic Plate Counts and Drinking-water Safety

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Publisher : IWA Publishing
ISBN 13 : 9781843390251
Total Pages : 278 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Heterotrophic Plate Counts and Drinking-water Safety by : Jamie Bartram

Download or read book Heterotrophic Plate Counts and Drinking-water Safety written by Jamie Bartram and published by IWA Publishing. This book was released on 2003-08-31 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterotrophic Plate Counts and Drinking-water Safety provides a critical assessment of the role of the Heterotrophic Plate Count (HPC) measurement in drinking water quality management. It was developed from an Expert workshop of 32 scientists convened by the World Health Organization and the WHO/NSF International Collaborating Centre for Drinking Water Safety and Treatment in Geneva, Switzerland. Heterotrophs are organisms, including bacteria, yeasts and moulds, that require an external source of organic carbon for growth. The HPC test (or Standard Plate Count), applied in many variants, is the internationally accepted test for measuring the hetrotrophic microorganism population in drinking water, and also other media. It measures only a fraction of the microorganisms actually present and does not distinguish between pathogens and non-pathogens. High levels of microbial growth can affect the taste and odor of drinking water and may indicate the presence of nutrients and biofilms which could harbor pathogens, as well as the possibility that some event has interfered with the normal production of the drinking water. HPC counts also routinely increase in water that has been treated by an in-line device such as a carbon filter or softener, in water-dispensing devices and in bottled waters and indeed in all water that has suitable nutrients, does not have a residual disinfectant, and is kept under sufficient conditions. There is debate among health professionals as to the need, utility or quantitative basis for health-based standards or guidelines relating to HPC-measured regrowth in drinking water. The issues that were addressed in this work include: the relationship between HPC in drinking water (including that derived from in-line treatment systems, dispensers and bottled water) and health risks for the general public the role of HPC as an indirect indicator or index for pathogens of concern in drinking water the role of HPC in assessing the efficacy and proper functioning of water treatment and supply processes the relationship between HPC and the aesthetic acceptability of drinking water. Heterotrophic Plate Counts and Drinking-water Safety provides valuable information on the utility and the limitations of HPC data in the management and operation of piped water systems as well as other means of providing drinking water to the public. It is of particular value to piped public water suppliers and bottled water suppliers, manufacturers and users of water treatment and transmission equipment and inline treatment devices, water engineers, sanitary and clinical microbiologists, and national and local public health officials and regulators of drinking water quality.

White's Handbook of Chlorination and Alternative Disinfectants

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Publisher : John Wiley & Sons
ISBN 13 : 1118210557
Total Pages : 1109 pages
Book Rating : 4.1/5 (182 download)

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Book Synopsis White's Handbook of Chlorination and Alternative Disinfectants by : Black & Veatch Corporation

Download or read book White's Handbook of Chlorination and Alternative Disinfectants written by Black & Veatch Corporation and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 1109 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition covers the latest practices, regulations, and alternative disinfectants Since the publication of the Fourth Edition of White's Handbook of Chlorination and Alternative Disinfectants more than ten years ago, the water industry has made substantial advances in their understanding and application of chlorine, hypochlorite, and alternative disinfectants for water and wastewater treatment. This Fifth Edition, with its extensive updates and revisions, reflects the current state of the science as well as the latest practices. Balancing theory with practice, the Fifth Edition covers such important topics as: Advances in the use of UV and ozone as disinfectants Alternative disinfectants such as chlorine dioxide, iodine, and bromine-related products Advanced oxidation processes for drinking water and wastewater treatment New developments and information for the production and handling of chlorine Latest regulations governing the use of different disinfectants For each disinfectant, the book explains its chemistry, effectiveness, dosing, equipment, and system design requirements. Moreover, the advantages and disadvantages of each disinfectant are clearly set forth. References at the end of each chapter guide readers to the primary literature for further investigation. Authored and reviewed by leading experts in the field of water and wastewater treatment, this Fifth Edition remains an ideal reference for utilities, regulators, engineers, and plant operators who need current information on the disinfection of potable water, wastewater, industrial water, and swimming pools.

Water Treatment and Pathogen Control

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Publisher : World Health Organization
ISBN 13 : 9241562552
Total Pages : 136 pages
Book Rating : 4.2/5 (415 download)

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Book Synopsis Water Treatment and Pathogen Control by : LeChevallier M.W.

Download or read book Water Treatment and Pathogen Control written by LeChevallier M.W. and published by World Health Organization. This book was released on 2004-09-24 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This publication provides a critical analysis of the literature on removal and inactivation of pathogenic microbes in water to aid the water quality specialist and design engineer in making decisions regarding microbial water quality.

Microbial Growth in Drinking Water Supplies

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Publisher : IWA Publishing
ISBN 13 : 1780400403
Total Pages : 484 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Microbial Growth in Drinking Water Supplies by : Dick van der Kooij

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

Recent Progress in Slow Sand and Alternative Biofiltration Processes

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Publisher : IWA Publishing
ISBN 13 : 1843391201
Total Pages : 580 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Recent Progress in Slow Sand and Alternative Biofiltration Processes by : Rolf Gimbel

Download or read book Recent Progress in Slow Sand and Alternative Biofiltration Processes written by Rolf Gimbel and published by IWA Publishing. This book was released on 2006-03-31 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Slow sand filtration is typically cited as being the first "engineered" process in drinking-water treatment. Proven modifications to the conventional slow sand filtration process, the awareness of induced biological activity in riverbank filtration systems, and the growth of oxidant-induced biological removals in more rapid-rate filters (e.g. biological activated carbon) demonstrate the renaissance of biofiltration as a treatment process that remains viable for both small, rural communities and major cities. Biofiltration is expected to become even more common in the future as efforts intensify to decrease the presence of disease-causing microorganisms and disinfection by-products in drinking water, to minimize microbial regrowth potential in distribution systems, and where operator skill levels are emphasized. Recent Progress in Slow Sand and Alternative Biofiltration Processes provides a state-of-the-art assessment on a variety of biofiltration systems from studies conducted around the world. The authors collectively represent a perspective from 23 countries and include academics, biofiltration system users, designers, and manufacturers. It provides an up-to-date perspective on the physical, chemical, biological, and operational factors affecting the performance of slow sand filtration (SSF), riverbank filtration (RBF), soil-aquifer treatment (SAT), and biological activated carbon (BAC) processes. The main themes are: comparable overviews of biofiltration systems; slow sand filtration process behavior, treatment performance and process developments; and alternative biofiltration process behaviors, treatment performances, and process developments.

Drinking Water Distribution Systems

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Publisher : National Academies Press
ISBN 13 : 0309133955
Total Pages : 404 pages
Book Rating : 4.3/5 (91 download)

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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 2006-12-22 with total page 404 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.

Organic Pollutants in the Water Cycle

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Publisher : John Wiley & Sons
ISBN 13 : 352760863X
Total Pages : 368 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Organic Pollutants in the Water Cycle by : Thorsten Reemtsma

Download or read book Organic Pollutants in the Water Cycle written by Thorsten Reemtsma and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first in-depth and comprehensive reference on the most pertinent polar contaminant classes and their behavior in the whole water cycle includes, among others, industrial chemicals, consumer products, polar herbicides and pharmaceuticals. All chapters are uniformly structured, covering properties, pollution sources, occurrence in wastewater, surface water, and groundwater as well as water treatment aspects, while ecotoxicological and assessment aspects are also covered. Among the authors are leading experts in their relevant fields, many of whom provide here groundbreaking research results. The result is an up-to-date information source for researchers and professionals working in water quality monitoring, water supply, or wastewater treatment, as well as environmental and water chemists, geochemists, ecologists, chemists and engineers.

Desalination

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Publisher : National Academies Press
ISBN 13 : 0309119235
Total Pages : 313 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Desalination by : National Research Council

Download or read book Desalination written by National Research Council and published by National Academies Press. This book was released on 2008-09-14 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been an exponential increase in desalination capacity both globally and nationally since 1960, fueled in part by growing concern for local water scarcity and made possible to a great extent by a major federal investment for desalination research and development. Traditional sources of supply are increasingly expensive, unavailable, or controversial, but desalination technology offers the potential to substantially reduce water scarcity by converting the almost inexhaustible supply of seawater and the apparently vast quantities of brackish groundwater into new sources of freshwater. Desalination assesses the state of the art in relevant desalination technologies, and factors such as cost and implementation challenges. It also describes reasonable long-term goals for advancing desalination technology, posits recommendations for action and research, estimates the funding necessary to support the proposed research agenda, and identifies appropriate roles for governmental and nongovernmental entities.

Disinfection By-products in Drinking Water

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Author :
Publisher : Butterworth-Heinemann
ISBN 13 : 0081029772
Total Pages : 490 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Disinfection By-products in Drinking Water by : M.N.V. Prasad

Download or read book Disinfection By-products in Drinking Water written by M.N.V. Prasad and published by Butterworth-Heinemann. This book was released on 2020-02-21 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disinfection Byproducts in Drinking Water: Detection and Treatment presents cutting-edge research on how to understand the procedures, processes and considerations for detecting and treating disinfection by-products from drinking water, swimming pool water, and wastewater. The book begins with an overview of the different groups of Disinfection Byproducts (DBPs), such as: Trihalomethanes (THM), Halo acetic acids, and Haloacetonitrile (HAN). This coverage is quickly followed by a clear and rigorous exposition of the latest methods and technologies for the characterization, occurrence, formation, transformation and removal of DBPs in drinking water. Other chapters focus on ultraviolet-visible spectroscopy, electron spin resonance, and gas chromatography-mass spectrometry. Researchers will find a valuable resource to a breath of topics for DBP detection and treatment, including various recent techniques, such as microfiltration, nanofiltration membrane and nanotechnology.

Coagulation and Flocculation in Water and Wastewater Treatment

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Publisher : IWA Publishing
ISBN 13 : 1843391066
Total Pages : 421 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Coagulation and Flocculation in Water and Wastewater Treatment by : John Bratby

Download or read book Coagulation and Flocculation in Water and Wastewater Treatment written by John Bratby and published by IWA Publishing. This book was released on 2006-10-15 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coagulation and Flocculation in Water and Wastewater Treatment provides a comprehensive account of coagulation and flocculation techniques and technologies in a single volume covering theoretical principles to practical applications. Thoroughly revised and updated since the 1st Edition it has been progressively modified and increased in scope to cater for the requirements of practitioners involved with water and wastewater treatment. A thorough gamut of treatment scenarios is attempted, including turbidity, color and organics removal, including the technical aspects of enhanced coagulation. The effects of temperature and ionic content are described as well as the removal of specific substances such as arsenic and phosphorus. Chemical phosphorus removal is dealt with in detail, Rapid mixing for efficient coagulant utilization, and flocculation are dealt with in specific chapters. Water treatment plant waste sludge disposal is dealt with in considerable detail, in an Appendix devoted to this subject. Invaluble for water scientists, engineers and students of this field, Coagulation and Flocculation in Water and Wastewater Treatment is a convenient reference handbook in the form of numerous examples and appended information.

EPA-600/9

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Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis EPA-600/9 by :

Download or read book EPA-600/9 written by and published by . This book was released on 1975-12 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Safe Drinking Water

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Publisher : IWA Publishing
ISBN 13 : 1843390426
Total Pages : 501 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Safe Drinking Water by : Steve E. Hrudey

Download or read book Safe Drinking Water written by Steve E. Hrudey and published by IWA Publishing. This book was released on 2004-05-31 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drinking water provides an efficient source for the spread of gastrointestinal microbial pathogens capable of causing serious human disease. The massive death toll and burden of disease worldwide caused by unsafe drinking water is a compelling reason to value the privilege of having safe drinking water delivered to individual homes. On rare occasions, that privilege has been undermined in affluent nations by waterborne disease outbreaks traced to the water supply. Using the rich and detailed perspectives offered by the evidence and reports from the Canadian public inquiries into the Walkerton (2000) and North Battleford (2001) outbreaks to develop templates for understanding their key dimensions, over 60 waterborne outbreaks from 15 affluent countries over the past 30 years are explored as individual case studies. Recurring themes and patterns are revealed and the critical human dimensions are highlighted suggesting insights for more effective and more individualized preventive strategies, personnel training, management, and regulatory control. Safe Drinking Water aims to raise understanding and awareness of those factors that have most commonly contributed to or caused drinking-water-transmitted disease outbreaks - essentially a case-history analysis within the multi-barrier framework. It contains detailed analysis of the failures underlying drinking-water-transmitted disease epidemics that have been documented in the open literature, by public inquiry, in investigation reports, in surveillance databases and other reliable information sources. The book adopts a theme of 'converting hindsight into foresight', to inform drinking-water and health professionals including operators, managers, engineers, chemists and microbiologists, regulators, as well as undergraduates and graduates at specialty level. Key Features: Contains details and perspectives of major outbreaks not widely known or understood beyond those directly involved in the investigations. Technical and scientific background associated with case studies is offered in an accessible summary form. Does not require specialist training or experience to comprehend the details of the numerous outbreaks reviewed. By providing a broad-spectrum review using a consistent approach, several key recurring themes are revealed that offer insights for developing localized, tailor-made prevention strategies.

Wastewater Microbiology

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Publisher : John Wiley & Sons
ISBN 13 : 1118148150
Total Pages : 809 pages
Book Rating : 4.1/5 (181 download)

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Book Synopsis Wastewater Microbiology by : Gabriel Bitton

Download or read book Wastewater Microbiology written by Gabriel Bitton and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater Microbiology focuses on microbial contaminants found in wastewater, methods of detection for these contaminants, and methods of cleansing water of microbial contamination. This classic reference has now been updated to focus more exclusively on issues particular to wastewater, with new information on fecal contamination and new molecular methods. The book features new methods to determine cell viability/activity in environmental samples; a new section on bacterial spores as indicators; new information covering disinfection byproducts, UV disinfection, and photoreactivation; and much more. A PowerPoint of figures from the book is available at ftp://ftp.wiley.com/public/sci_tech_med/wastewater_microbiology.