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Author: LeChevallier M.W.
Publisher: World Health Organization
Published: 2004-09-24
Total Pages: 136
ISBN-13: 9241562552
DOWNLOAD EBOOK →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: Rao Y. Surampalli
Publisher: ASCE Publications
Published: 2004-01-01
Total Pages: 585
ISBN-13: 9780784407417
DOWNLOAD EBOOK →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.
Author: Srinivasa Lingireddy
Publisher: ASCE Publications
Published: 2002-01-01
Total Pages: 324
ISBN-13: 9780784475232
DOWNLOAD EBOOK →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: Gregory J. Kirmeyer
Publisher: American Water Works Association
Published: 2001
Total Pages: 286
ISBN-13: 1583211020
DOWNLOAD EBOOK →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)
Author: Wim A. M. Hijnen
Publisher: IWA Publishing
Published: 2010-12-16
Total Pages: 205
ISBN-13: 184339376X
DOWNLOAD EBOOK →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
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
Published: 2020-02-20
Total Pages: 291
ISBN-13: 0309493854
DOWNLOAD EBOOK →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.
Author: Robert M. Clark
Publisher: DIANE Publishing
Published: 2001
Total Pages: 336
ISBN-13:
DOWNLOAD EBOOK →Author: Joan B. Rose
Publisher: IWA Publishing
Published: 2005-04-30
Total Pages: 90
ISBN-13: 1843397307
DOWNLOAD EBOOK →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.
Author: Charles N. Haas
Publisher: John Wiley & Sons
Published: 2014-06-09
Total Pages: 439
ISBN-13: 1118910028
DOWNLOAD EBOOK →Provides the latest QMRA methodologies to determine infection risk cause by either accidental microbial infections or deliberate infections caused by terrorism • Reviews the latest methodologies to quantify at every step of the microbial exposure pathways, from the first release of a pathogen to the actual human infection • Provides techniques on how to gather information, on how each microorganism moves through the environment, how to determine their survival rates on various media, and how people are exposed to the microorganism • Explains how QMRA can be used as a tool to measure the impact of interventions and identify the best policies and practices to protect public health and safety • Includes new information on genetic methods • Techniques use to develop risk models for drinking water, groundwater, recreational water, food and pathogens in the indoor environment
Author: American Water Works Association
Publisher: American Water Works Association
Published: 2006
Total Pages: 353
ISBN-13: 1583214038
DOWNLOAD EBOOK →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.
