Download or read book Disinfection By product Formation in the Water Distribution System of Morehead Kentucky written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of the distribution system on water quality seems complex. Water demands and average residence times change continually, and chlorine residuals depend on these changing residence times as well as changes in temperature, pH, and organic matter characteristics caused by distribution system hydraulic dynamics. Furthermore, these changing physical/chemical conditions inherently affect the formation of regulated disinfection by-products (DBPs). The research focuses on a water distribution system in eastern Kentucky, which is fed by a 5 MGD conventional treatment plant. The field study was conducted in two phases. A 24-hour hydraulic field sampling event was performed to provide basic data for characterizing the system hydraulics and for understanding the kinetics of chlorine decay and DBP formation. A 48-hour water quality sampling event was conducted using the utility's four regulatory sampling locations, augmented by 15 locations designed to sample representative water from storage tanks, dead-ends, and different pipe materials and ages.
Download or read book Disinfection Byproducts in Drinking Water written by Yuefeng Xie and published by CRC Press. This book was released on 2003-08-27 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EPA has established regulations which classify four types of disinfection byproducts - TTHMs, haloacetic acids, bromate, and chlorite - and requires public water systems limit these byproducts to specific levels. Most of the information required to comply with these standards is either scattered throughout the literature or derived from confere
Download or read book Disinfection By products in Drinking Water written by K. Clive Thompson and published by Royal Society of Chemistry. This book was released on 2016 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the latest developments in themes related to water disinfection by-products, this book brings the academic and industry researchers right up to date.
Download or read book Analysis and Management of Disinfection by Product Formation in Distribution Systems written by Sandhya Rao Poleneni and published by . This book was released on 2013 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: The newly promulgated Stage-2 Disinfectant and Disinfection By-Product (D/DBP) regulations force water utilities of all sizes to be more concerned with their finished and distributed water quality. Compliance for many small-scale utilities requires changes to their current operational strategy. However, these changes affect the formation of DBPs over time. This study is performed in an effort to examine and quantify the extent of change in DBP formation and chlorine decay kinetics under different operational conditions and pipe materials found at many small-scale water utilities. As a part of this study a physical model (Pipe Loop) of a distribution system was used to evaluate the change in water quality as a function of time under different operational conditions such as having a high chlorine dosage entering the distribution system, using a chlorine booster system in the distribution system, and operation of clearwells/storage tanks. It is determined that High Chlorine run is least optimal option with approximately 64% and 30% higher production of TTHMs when compared to Normal and Chlorine Booster run, respectively. It is also determined that High Chlorine conditions minimize the wall effects and the location of Boosters should always be after the storage systems to avoid extra contact time that can produce approximately 23-78% higher concentrations of TTHMs. In case of storage systems, it is statistically proven that storage time before entering the tank, mixing conditions and fillings cycles play an important role in maintaining water quality in the tanks.
Download or read book Microbial and Disinfection Byproduct Rules Simultaneous Compliance Guidance Manual written by and published by . This book was released on 1999 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Disinfection By Products and Human Health written by Steve E. Hrudey and published by IWA Publishing. This book was released on 2012-04-30 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disinfection By-Products and Human Health is based on contributions from speakers who participated in May 2011 workshops on Disinfection By-Products (DBPs) and Human Health at Ozwater 11 in Adelaide, Australia or at an AWA sponsored workshop at the Curtin Water Quality Research Centre, Perth, Australia. The contributions are prepared to facilitate communication with practitioners, rather than researchers, making use of overview illustrations rather than dense text or data tables. Each chapter concludes with up to 5 key findings that are take-home messages for practitioners. Disinfection By-Products and Human Health is aimed specifically at drinking water professionals (engineers, chemists and public health professionals) working on the front lines of drinking water issues where they must encounter actual day-to-day issues of risk management concerning DBPs in relation to all the other regulatory and water quality issues they must manage. Although a topic this complex is certainly not amenable to simplistic explanations, this book aims to provide drinking water professionals with a pragmatic assessment of the current evidence and emerging issues concerning DBPs and public health. Disinfection By-Products and Human Health is an essential, practical and accessible guide for drinking water professionals, engineers, chemists and public health professionals. Editors: Steve E. Hrudey, Professor Emeritus, Analytical & Environmental Toxicology, University of Alberta, Canada, Jeffrey W.A. Charrois, Director and Associate Professor, Curtin Water Quality Research Centre, Curtin University of Technology, Australia, Steve Hrudey is professor emeritus in analytical and environmental toxicology in the University of Alberta's Faculty of Medicine & Dentistry. He spent 13 years as a cabinet-appointed member of the Alberta Environmental Appeals Board, the last four as chair, and was the first non-lawyer to hold this position. During this period, he served on 36 public hearing panels, 19 as chair of the panel. In addition he has testified before senate committees in Canada and the Legislative Council in Western Australia. Hrudey has served on a number of high-profile expert panels, including the Research Advisory Panel to the Walkerton Inquiry (2000-2002), the Expert Panel on Safe Drinking Water for First Nations (2006), the Technical Advisory Committee to the B.C. Minister of Health on turbidity and microbial risk in drinking water (2007-2008, as chair), the Expert Advisory Panel on Water Quality for Washington, D.C., to the U.S. Army Corps of Engineers (2009-2011) and chair of the Royal Society of Canada Expert Panel on Environmental and Health Impacts of Canada's Oil Sands Industry (2009-2010). He has also co-authored or edited nine books, including the widely acclaimed book inspired by the Walkerton tragedy: Safe Drinking Water - Lessons from Recent Outbreaks in Affluent Nations (IWA Publishing, 2004). He has written 26 book chapters, 19 expert panel reports, 163 refereed journal articles, 15 science discussions, six media op-eds and 73 conference proceeding papers. Hrudey is the 2012 winner of the American Water Works Association A.P. Black Research Award for contributions to water science and water supply. This book is sponsored by Australian Water Association (AWA)
Download or read book Disinfection By Products in Water TreatmentThe Chemistry of Their Formation and Control written by Roger A. Minear and published by CRC Press. This book was released on 2017-11-22 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disinfection By-Products in Water Treatment describes new government regulations related to disinfection by-products. It explains the formation of microorganism by-products during water treatment and the methods employed to control them. The book includes several chapters on chlorine by-products and discusses techniques for the removal of chloroform from drinking water. It also describes gamma radiation techniques for removing microorganic by-product precursors from natural waters and the removal of bromate from drinking water.
Download or read book Disinfection By Products in Drinking Water written by M Fielding and published by Elsevier. This book was released on 1999-01-01 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together contributors from water regulators, and water suppliers in Europe and North America to discuss the main issues associated with reaching a cost-effective balance between microbial and chemical risks. Overviews of research are presented alongside illuminating case studies of the practical approaches taken by water companies and regulators on both sides of the Atlantic.
Download or read book Formation and Decay of Disinfection By products in the Distribution System written by and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Disinfection By products written by and published by . This book was released on 1989 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Disinfection By product Formation in Polymeric Pipe Distribution Systems written by Sina Shabani and published by . This book was released on 2013 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In recent years, polymeric materials have become the dominant type of material used for drinking water pipe distribution systems. They have some advantages over other types of pipes such as cast iron, ductile iron, concrete, and copper. There are also concerns on the effect of polymeric pipes on water quality. The effect of polymeric pipes on desalinated water is an area that has not been significantly investigated in previous studies. The UAE is predominantly using a desalination plant in order to provide the water for the residents and industries. The purpose of this research was to investigate the effect of the combination of polymeric pipes and desalinated water on the formation of a disinfection byproduct"--Abstract.
Download or read book Disinfection By product Formation in Drinking Water Treated with Chlorine Following UV Photolysis UV H2O2 written by Remilekun Yetunde Adedapo and published by . This book was released on 2005 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: As far back as the early 1900's when it was discovered that water could be a mode of transmitting diseases, chlorine was used to disinfect water. In the 1970's, the formation of disinfection by-products (DBPs) from the reaction of chlorine with natural organic matter was discovered. Since then there have been various studies on alternative disinfectants that could inactivate microorganisms and at the same time form less or no disinfection by-products. More recently the ultraviolet (UV) irradiation has been used to both disinfect and remove organic contaminants in drinking water. Though the use of UV irradiation has been found to be very effective in the inactivation of microorganisms, it does not provide a residual effect to maintain the water's microbial quality in the distribution system. Due to this, a secondary disinfectant such as chlorine has to be used to achieve microbial stability, suggesting that the formation of chlorination disinfection by-products would still occur but perhaps in different quantities and with different chemical species. In this research, the use of factorial experiments and single factor experiments were used to determine the effects of pH, alkalinity and UV-fluence (dose) on the formation of three classes of disinfection by-products; haloacetic acids (HAAs), haloacetonitriles (HANs) and trihalomethanes (THMs). These disinfection by-products were measured in water samples following post-UV chlorination and the UV treatment was either UV photolysis or UV/H2O2. From the factorial experiment results, treatment of synthetic water with UV/H2O2, an advanced oxidation process (AOP), produced fewer post-UV chlorination disinfection by-products (PCDBPs) than UV photolysis. For chlorinated PCDBPs, the percentage difference between UV photolysis and UV/H2O2 was 55, 65 and 38% for total HAAs (HAA9), total HANs (THANs) and total THMs (TTHMs) respectively. The percentage difference between UV photolysis and UV/H2O2 for brominated PCDBPs was 41 and 42% for HAA9 and TTHMs respectively. Both the use of pH and alkalinity proved to be factors that were significant in affecting the yields of the PCDBPs studied. Increases in alkalinity were found to increase the formation of PCDBPs in the treatment of synthetic water with UV/H2O2. Alkalinity had the opposite effect for PCDBP formed under UV photolysis conditions. Increases in pH always decreased the formation of PCDBPs. In the single factor experiments, haloacetic acid concentrations were unaffected as alkalinity was increased but dichloroacetonitrile and chloroform increased in concentration under treatment conditions of UV photolysis followed by chlorination. The UV/H2O2 treatment resulted in a decrease in concentration of the PCDBPs. In the pH studies, water samples were subjected only to the UV/H2O2 treatments and a reduction in concentration of PCDBPs occurred between pH 7 and 9.
Download or read book Disinfection By products written by Steve E. Hrudey and published by IWA Publishing (International Water Assoc). This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: He has written 26 book chapters, 19 expert panel reports, 163 refereed journal articles, 15 science discussions, six media op-eds and 73 conference proceeding papers. Hrudey is the 2012 winner of the American Water Works Association A.P. Black Research Award for contributions to water science and water supply. This book is sponsored by Australian Water Association (AWA) Table of Contents Disinfection By-Products (DBPs) as a public health issue S. E. Hrudey and J. W. A. Charrois Research overview, regulatory history and current worldwide status of DBP regulations and guidelines I. Kristiana, J. W. A. Charrois and S. E. Hrudey Managing DBPs under challenging conditions--a utility water quality manager's perspective R. Walker Halogenated DBPs and emerging issues S. W. Krasner Nitrogenous DBPs, formation, control and new frontiers W. A. Mitch Nitrogenous DBPs in drinking water: toxicity, regulation, analysis, occurrence and control D. Liew, K. L. Linge, A. Heitz and C. A.
Download or read book An Investigation of the Disinfection By product Formation and Removal at the Moorhead Water Treatment Plant written by Stuart Robb Hurley and published by . This book was released on 2001 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drinking Water Disinfection and Chlorinated Organics Formation written by Robert C. Hoehn and published by . This book was released on 1977 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Understanding Disinfection By product Behavior in Water Distribution Systems written by Chad J. Seidel and published by . This book was released on 2000 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
