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Water Treatment and Pathogen Control by LeChevallier M.W.,Kwok-Keung A. Pdf
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.
Author : American Water Works Association Publisher : American Water Works Association Page : 352 pages File Size : 49,7 Mb Release : 2006 Category : Science ISBN : 9781583214039
Waterborne Pathogens by American Water Works Association Pdf
Updated from the 1999 edition, this manual provides critical information regarding waterborne viral, bacterial and parasitic pathogens. Each pathogen is described along with its health effects, and water treatment techniques for destroying the pathogens. Also covered are cross-connection control, dead-end flushing, and hydrant flushing. This manual is intended for water operators, engineers, water quality personnel and students to learn how to monitor, sample and test waters for pathogens, optimize treatment plant performance and maintain high water quality standards. Updated from the 1999 edition, this manual provides critical information regarding waterborne viral, bacterial and parasitic pathogens. Each pathogen is described along with its health effects, and water treatment techniques for destroying the pathogens. Also covered are cross-connection control, dead-end flushing, and hydrant flushing. This manual is intended for water operators, engineers, water quality personnel and students to learn how to monitor, sample and test waters for pathogens, optimize treatment plant performance and maintain high water quality standards.
National Academies of Sciences, Engineering, and Medicine,Health and Medicine Division,Division on Earth and Life Studies,Board on Population Health and Public Health Practice,Board on Life Sciences,Water Science and Technology Board,Committee on Management of Legionella in Water Systems
Author : National Academies of Sciences, Engineering, and Medicine,Health and Medicine Division,Division on Earth and Life Studies,Board on Population Health and Public Health Practice,Board on Life Sciences,Water Science and Technology Board,Committee on Management of Legionella in Water Systems Publisher : National Academies Press Page : 291 pages File Size : 48,9 Mb Release : 2020-02-20 Category : Medical ISBN : 9780309493857
Management of Legionella in Water Systems by National Academies of Sciences, Engineering, and Medicine,Health and Medicine Division,Division on Earth and Life Studies,Board on Population Health and Public Health Practice,Board on Life Sciences,Water Science and Technology Board,Committee on Management of Legionella in Water Systems Pdf
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.
Quantitative Methods to Assess Capacity of Water Treatment to Eliminate Micro-Organisms by Wim A. M. Hijnen Pdf
Special Offer: KWR Drinking Water Treatment Set - Buy all five books together and save a total £119! Ever since the recognition of the important role of water in the transmission of pathogenic micro-organisms in the 19th century, microbiological safety of drinking water has been a major research issue for microbiologists in the drinking water industry. The main objective of this book is to develop a general strategy to assess elimination capacity of water treatment processes for pathogens. It investigates: The potential use of faecal indicators Coli44, (including E. coli) and SSRC, (including C. perfringens) as process indicators to assess pathogen elimination in full-scale water treatment plants. The value of comparative challenge tests with pre-cultured organisms for the assessment of elimination capacity of full-scale processes, to study the effect of process conditions and to validate the use of process indicators. The use of literature data to assess elimination capacity of water treatment processes for pathogens and the effect of process conditions on this. Visit the IWA WaterWiki to read and share material related to this title: http://www.iwawaterwiki.org/xwiki/bin/view/Articles/WaterbornePathogens
National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Drinking Water Contaminants
Author : National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Drinking Water Contaminants Publisher : National Academies Press Page : 127 pages File Size : 51,5 Mb Release : 1998-12-02 Category : Nature ISBN : 9780309173643
Setting Priorities for Drinking Water Contaminants by National Research Council,Division on Earth and Life Studies,Commission on Geosciences, Environment and Resources,Committee on Drinking Water Contaminants Pdf
The provision of safe drinking water has been an important factor in the improvement of the health status of U.S. communities since the turn of the last century. Nonetheless, outbreaks of waterborne disease and incidences of chemical contamination of drinking water continue to occur. Setting Priorities for Drinking Water Contaminants recommends a new process for the U.S. Environmental Protection Agency to use in deciding which potential drinking water contaminants should be regulated in public water supplies to provide the greatest protection against waterborne illnesses. The book covers chemical and microbiological contaminants and includes a historical review of past approaches to setting priorities for drinking water contaminants and other environmental pollutants. It emphasizes the need for expert judgment in this process and for a conservative approach that considers public health protection as the first priority.
Control of Microorganisms in Drinking Water by Srinivasa Lingireddy Pdf
Prepared by the Water Supply Engineering Technical Committee of the Infrastructure Council of the Environmental and Water Resources Institute of ASCE. This report provides a comprehensive survey of the state of the art in drinking water treatment methods and technologies for controlling microorganisms. Academics, practicing engineers, and environmental scientists offer insight into the risks posed by microbes in drinking water and ,more importantly, their control through treatment and disinfection. The report supplies an overview of the subject for nonspecialists and becomes a valuable technical reference for experienced practitioners. Topics include: Ørisks posed by pathogens in drinking water; Ømicrobially-mediated corrosion and water quality deterioration; Øindicator concept and its application in water supply; Øremoval of organisms by flocculation/sedimentation; Øair stripping and aeration; Øslow sand filtration; Ørapid sand filtration; Øgranular activated carbon/biological activated carbon; Øcontrol of microorganisms in drinking water by pressure-driven membrane processes; Øgeneral kinetics of disinfection processes; Øchlorine and chloramines; Øchlorine dioxide in drinking water treatment; Øultraviolet disinfection; Øozone disinfection in drinking water; and Øemerging pathogens of concern in drinking water.
Author : World Health Organization Publisher : World Health Organization Page : 259 pages File Size : 50,7 Mb Release : 2004-09-23 Category : Medical ISBN : 9789241562591
Pathogenic Mycobacteria in Water by World Health Organization Pdf
Environmental mycobacteria can be found in diverse environments around the world, some of which have the ability to infect animals, birds and humans and have evolved mechanisms by which they can invade and grow within host cells, the pathogenic environmental mycobacteria (PEM). Although the diseases caused by these organisms have been known for many years, it is only recently that the potential significance of PEM as a waterborne pathogen has been appreciated. This publication discusses current knowledge about the distribution of PEM in water and other parts of the environment, the routes of transmission that lead to human infection, the most significant disease symptoms that can follow infection, methods of analysis and detection, the control of PEM in drinking-water and the assessment and management of risks.
Author : Gregory J. Kirmeyer Publisher : American Water Works Association Page : 286 pages File Size : 44,6 Mb Release : 2001 Category : Drinking water ISBN : 9781583211021
Pathogen Intrusion Into the Distribution System by Gregory J. Kirmeyer Pdf
Reports on a project that identifies pathogen routes of entry into water distribution systems and develops monitoring and control strategies for protecting the system. Contains chapters on pathogens and pathways, existing control strategies, transient surge modeling, pressure monitoring, field monitoring, recommended control strategies, and recommendations to utilities. The project was completed by a multi-disciplinary team of engineers and practitioners with funding from the American Water Works Association Research Foundation and the Environmental Protection Agency. The book is not indexed. Annotation c. Book News, Inc., Portland, OR (booknews.com)
Reduction of Pathogens, Indicator Bacteria, and Alternative Indicators by Wastewater Treatment and Reclamation Processes by Joan B. Rose Pdf
In wastewater reclamation systems, microbiological monitoring is conducted to ensure that the users of reclaimed water are exposed to minimal risks from exposure to pathogens. Typically, utilities rely on the use of process controls to remove or inactivate pathogens. Routine monitoring of indicator organisms is conducted to evaluate overall process performance and for regulatory compliance. However, the effectiveness of individual treatment processes for removal of pathogens is dependent on process variables. This project was conducted to compare the effectiveness of biological treatment, filtration, and disinfection for removal of bacterial and viral indicators, enteric viruses, and protozoan pathogens. Six full-scale treatment facilities were each sampled a minimum of four times over a one year period. The relative impacts of loading conditions, process design, and operating parameters on the removal/inactivation of a suite of nine microbial species (bacteria, coliphages, enteric viruses, and protozoan pathogens) was evaluated. Bacterial removal was consistent for all types of biological systems, however, increased virus removal was associated with biological nutrient removal and nitrification processes. Parasite removal was highly variable. The effectiveness of filtration was impacted most by the use of upstream chemicals (either chlorine or coagulant chemicals). Chlorine disinfection was more effective in cases where ammonia levels were low (biological nutrient removal or nitrification facilities). Infectivity assays for protozoan pathogens suggest that the proportion of infective cysts or oocysts increases with increasing level of treatment.
National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Board on Life Sciences,Committee on Indicators for Waterborne Pathogens
Author : National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Board on Life Sciences,Committee on Indicators for Waterborne Pathogens Publisher : National Academies Press Page : 329 pages File Size : 51,7 Mb Release : 2004-06-19 Category : Nature ISBN : 9780309091220
Indicators for Waterborne Pathogens by National Research Council,Division on Earth and Life Studies,Water Science and Technology Board,Board on Life Sciences,Committee on Indicators for Waterborne Pathogens Pdf
Recent and forecasted advances in microbiology, molecular biology, and analytical chemistry have made it timely to reassess the current paradigm of relying predominantly or exclusively on traditional bacterial indicators for all types of waterborne pathogens. Nonetheless, indicator approaches will still be required for the foreseeable future because it is not practical or feasible to monitor for the complete spectrum of microorganisms that may occur in water, and many known pathogens are difficult to detect directly and reliably in water samples. This comprehensive report recommends the development and use of a "tool box" approach by the U.S Environmental Protection Agency and others for assessing microbial water quality in which available indicator organisms (and/or pathogens in some cases) and detection method(s) are matched to the requirements of a particular application. The report further recommends the use of a phased, three-level monitoring framework to support the selection of indicators and indicator approaches.Â
Advances in Water and Wastewater Treatment by Rao Y. Surampalli,R. D. Tyagi Pdf
Annotation "Advances in Water and Wastewater Treatment provides state-of-the-art information on the application of innovative technologies for water and wastewater treatment with an emphasis on the scientific principles for pollutant or pathogen removal. Described in detail are the practice and principles of wastewater treatment on topics such as: global warming, sustainable development, nutrient removal, bioplastics production, biosolid digestion and composting, pathogen reduction, metal leaching, secondary clarifiers, surface and subsurface constructed wetland, and wastewater reclamation. Environmental engineers and scientists involved in the practice of environmental engineering will benefit from the basic principles to innovation technologies application."--BOOK JACKET. Title Summary field provided by Blackwell North America, Inc. All Rights Reserved.
Waterborne Pathogens by Majeti Narasimha Vara Prasad,Anna Grobelak Pdf
Waterborne Pathogens: Detection and Treatment delivers the tools and techniques on how to identify these contaminates and apply the most effective technology for their removal and treatment. Written for researchers and practicing professionals, the book starts with a brief, but readable, review of ubiquitous waterborne pathogens (primarily viruses, bacterial and parasitic protozoa). This coverage is followed by an in-depth discussion of the latest detection and treatment technologies, ranging from Biosensors, to Nanoconjugates, Membrane Based Technologies and Nanotechnology Treatment. Engineers and scientist will find this to be a valuable reference on cutting-edge techniques for suppling safe drinking water across the globe. Explains the latest research on detection, treatment processes and remediation technologies Includes sampling, analytical and characterization methods and approaches Covers cutting-edge research, including Membrane Based Technologies, Nanotechnology Treatment Technologies and Bioremediation Treatment Technologies Provides background information regarding contamination sources