Download or read book Ozonation biofiltration for the Production of Drinking Water from Organic rich Groundwaters written by Jakob Kämmler and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater resources present a major reservoir for worldwide drinking water production that is used intensively due to its consistent quality and availability. Organic-rich groundwater resources with high concentration of natural organic matter (NOM) are not used to their full potential due to the negative impact of NOM on treatment processes and on water quality, particularly on water coloration. This work examines the ozonation-biofiltration process to enhance NOM removal in drinking water production from organic-rich groundwater. Objects of research regarding the ozonation-biofiltration of organic-rich groundwater were (i) the transformation of groundwater NOM, (ii) by-product formation and its minimization and (iii) applicability and integration potential into groundwater treatment. An experimental approach was chosen to address these objects of research. Experiments included batch ozonation, small-scale pilot ozonation-biofiltration and membrane ozonation using different natural, organic-rich groundwaters. Ozonation of organic-rich groundwater is characterized by rapid ozone (O3) consumption by NOM, normalized to the dissolved organic carbon (DOC) content of groundwater (approxi-mately 0.5 mgO3/mgDOC in the first 30 s of ozonation). This results in significant reduction of ultraviolet absorbance (UV254) and color (SAC436) but in low disintegration of NOM to smaller molecular size and therefore moderate formation of assimilable organic carbon (AOC). The simultaneous formation of bromate, a presumed human carcinogen, may exceed international drinking water limits under these conditions. This is due to high bromide contents of groundwaters and presumably enhanced by hydroxyl radicals formed by ozonation of phenolic NOM. Biofiltration of ozonated groundwater by granular activated carbon and phonolithe results in significant reduction of AOC and minor reduction of UV254, SAC436 and DOC. Overall SAC436 removal potential by small-scale pilot ozonation-biofiltration was 40-50 % at bromate concentrations “ 10 μg L-1, for two different groundwaters. For other groundwaters used in batch ozonation experiments, SAC436 removal potential may be up to 70 %. Decolorization performance of ozonation-biofiltration may be enhanced by the implementation of bromate minimization strategies. Process-oriented strategies (multi-stage ozonation and membrane ozonation) and pH reduction showed the highest potential to improve the trade-off between decolorization and bromate formation. Addition of ammonia or hydrogen peroxide reduced bromate concentration only at high ozone doses or compromised decolorization. Ozonation-biofiltration was performed with different feed water qualities including raw groundwater, aerated groundwater and finished groundwater, indicating high potential for integration into groundwater treatment. Overall, it was shown that ozonation-biofiltration is applicable in different groundwater matrices, for different feed water qualities, at low ozone doses of

Download or read book Ozone induced Biofiltration of a Highly Colored Groundwater for Drinking Water Purposes written by Jason C. Garside and published by . This book was released on 1996 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ozone enhanced Biofiltration for Geosmin and MIB Removal written by Paul Westerhoff and published by American Water Works Association. This book was released on 2005 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher description

Download or read book Ozone in Water Treatment written by Bruno Langlais and published by Routledge. This book was released on 2019-07-16 with total page 773 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of the Safe Drinking Water Act Amendments of 1986, many water utilities are reexamining their water treatment practices. Upcoming new regulations on disinfection and on disinfection by-products, in particular, are the primary driving forces for the big interest in ozone. It appears that ozone, with its strong disinfection capabilities, and apparently lower levels of disinfection by-products (compared to other disinfectants), may be the oxidant/disinfectant of choice. Many utilities currently using chlorine for oxidation may need to switch due to chlorine by-product concerns. Utilities using chloramines may need to use ozone to meet CT requirements. This book, prepared by 35 international experts, includes current technology on the design, operation, and control of the ozone process within a drinking water plant. It combines almost 100 years of European ozone design and operating experience with North American design/operations experience and the North American regulatory and utility operational environment. Topics covered include ozone chemistry, toxicology, design consideration, engineering aspects, design of retrofit systems, and the operation and economics of ozone technology. The book contains a "how to" section on ozone treatability studies, which explains what information can be learned using treatability studies, at what scale (bench, pilot, or demonstration plant), and how this information can be used to design full-scale systems. It also includes valuable tips regarding important operating practices, as well as guidance on retrofits and the unique issues involved with retrofitting the ozone process. With ozone being one of the hottest areas of interest in drinking water, this book will prove essential to all water utilities, design engineers, regulators, and plant managers and supervisors.

Download or read book Ozonation Ultrafiltration and Biofiltration for the Control of NOM and DBP in Drinking Water written by Kuan-chung Chen and published by . This book was released on 2003 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Ozonation and Biofiltration as a Membrane Pre treatment at a Full scale Drinking Water Treatment Plant written by Yulang Wang and published by . This book was released on 2014 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane technologies are gaining popularity for drinking water treatment; however, fouling remains a major constraint as it can increase operational cost and shorten membrane service life. An important source of foulants for low pressure membranes (LPMs) is natural organic matter (NOM) which is present to varying degrees in all surface waters. Membrane fouling attributable to NOM can be managed by using appropriate pre-treatment(s). Among the new developments in membrane technologies for drinking water applications has been the integration of different pre-treatment processes in order to achieve optimal membrane performance and minimum lifecycle cost. The process combination of ozonation and biological filtration (biofiltration) appears to be a promising integrated pre-treatment for LPMs as both processes have been shown to individually be able to reduce LPM fouling. However, the process combination is neither commonly employed nor well-studied. The goals of this research were to assess the fouling control capacity of ozonation-biofiltration as an integrated pre-treatment process for ultrafiltration (UF) membranes, evaluate the role of ozone in the ozonation-biofiltration-membrane (OBM) process combination, and investigate the effect of water quality and NOM on the process. The approach involved the operation of three UF pilot plants and long-term water quality and biomass monitoring at the Lakeview Water Treatment Plant (WTP), which is located in Southern Ontario and is one of the few WTPs in the world that employs an ozonation, biofiltration, and ultrafiltration process sequence. A novel Liquid Chromatography-Organic Carbon Detection (LC-OCD) method was used to characterize different NOM fractions, including biopolymers, humic substances, building blocks, low molecular weight (LMW) acids and humics, and LMW neutrals. During this 16-month investigation, the ozonation-biofiltration process combination achieved good turbidity reduction but only minimal dissolved organic carbon (DOC) removal. In addition, the operation of ozonation (on vs. off) clearly impacted both biomass quantity and activity within the BACCs as measured by adenosine triphosphate (ATP) and fluorescein diacetate (FDA), respectively. This is because ozone can decrease the hydrophobicity of DOC in water as seen by a 43% reduction in specific ultraviolet absorbance through ozonation. Among all NOM factions measured by LC-OCD, biopolymers, which made up 13% of DOC, appeared to be the only one responsible for UF membrane fouling. An average of 60% of the biopolymers reaching the full- and pilot-scale UF membranes were retained. The concentration of biopolymers in membrane influent was found to be correlated to the hydraulically reversible fouling rate, while hydraulically irreversible fouling was largely affected by particulate/colloid content. The integrated ozonation-biofiltration pre-treatment process substantially reduced hydraulically irreversible fouling by removing substances measured as turbidity. Furthermore, ozonation was found to be able to enhance UF membrane fouling control as it can decrease biopolymer retention by downstream membranes (independently of biofilter efficiency). This research provides valuable information for the water treatment sector on LPM fouling and its control. Overall, the full-scale integrated ozonation-biofiltration pre-treatment process successfully reduced downstream LPM hydraulically reversible and irreversible fouling, and as such the example of the Lakeview WTP can be used to guide designers of other municipal drinking water membrane installations. Information on the concentration and variation of biopolymers in source water is important for membrane water treatment applications, and biofilters should be optimized for better biopolymer removal. These findings provide useful insight into the design and operation of membrane water treatment facilities.

Download or read book Ozone in Drinking Water Treatment written by Kerwin L. Rakness and published by American Water Works Association. This book was released on 2011-01-12 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence and Removal of Organics in Drinking Water written by Joel Mallevialle and published by CRC Press. This book was released on 1992-06-23 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use this new book to solve water treatment problems related to toxicity, taste and odor, and bacteria regrowth. Influence and Removal of Organics in Drinking Water presents the latest advances in oxidation technologies, ozonation, membrane technology, micropollutant removal, and filtration processes. Fundamental aspects of coagulation, flocculation, adsorption, ozonation, preozonation, and granular activated carbon are discussed. Filtration methods covered include biological filtration, membrane filtration, and ultrafiltration. The book will provide a useful reference for water treatment plant managers and operators, water engineers, water supply managers, and consultants.

Download or read book Ozone for Drinking Water Treatment written by International Ozone Association. Pan American Group and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ozonation of Water and Waste Water written by Christiane Gottschalk and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ozonation of compounds in water is a complex process. The mechanisms are very complicated, the parameters are many, but the possibilities of developing cost-effective treatment schemes for drinking water and waste water are large. Most books available today concentrate on either drinking water or waste water treatment, seldom dealing with both or explaining the essential differences. And only rare exceptions deal with the how-to of ozone experiments. This practical guide fills the gap. It contains the cumulative knowledge on experimental design, execution, interpretation and application. Drawing on experience gained from hours spent on laboratory research with drinking and waste waters, literature study, intensive discussion with leading experts, perplexed reflection and deep thought, the book offers practical help to avoid common pitfalls and unnecessary work. This book is aimed at professionals in industry and research currently using ozonation who want to optimize their system, as well as students beginning work with ozonation. It contains just enough information for beginners to start with, but goes rapidly to the detailed information that advanced readers need.

Download or read book Assessing Biofiltration Without Ozonation for Removal of Trihalomethane Precursors in Drinking Water at the Beaver Water District Drinking Water Treatment Plant written by Sana Ajaz and published by . This book was released on 2018 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemistry of Ozone in Water and Wastewater Treatment written by Clemens von Sonntag and published by IWA Publishing. This book was released on 2012-08-31 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even though ozone has been applied for a long time for disinfection and oxidation in water treatment, there is lack of critical information related to transformation of organic compounds. This has become more important in recent years, because there is considerable concern about the formation of potentially harmful degradation products as well as oxidation products from the reaction with the matrix components. In recent years, a wealth of information on the products that are formed has accumulated, and substantial progress in understanding mechanistic details of ozone reactions in aqueous solution has been made. Based on the latter, this may allow us to predict the products of as yet not studied systems and assist in evaluating toxic potentials in case certain classes are known to show such effects. Keeping this in mind, Chemistry of Ozone in Water and Wastewater Treatment: From Basic Principles to Applications discusses mechanistic details of ozone reactions as much as they are known to date and applies them to the large body of studies on micropollutant degradation (such as pharmaceuticals and endocrine disruptors) that is already available. Extensively quoting the literature and updating the available compilation of ozone rate constants gives the reader a text at hand on which his research can be based. Moreover, those that are responsible for planning or operation of ozonation steps in drinking water and wastewater treatment plants will find salient information in a compact form that otherwise is quite disperse. A critical compilation of rate constants for the various classes of compounds is given in each chapter, including all the recent publications. This is a very useful source of information for researchers and practitioners who need kinetic information on emerging contaminants. Furthermore, each chapter contains a large selection of examples of reaction mechanisms for the transformation of micropollutants such as pharmaceuticals, pesticides, fuel additives, solvents, taste and odor compounds, cyanotoxins. Authors: Prof. Dr. Clemens von Sonntag, Max-Planck-Institut für Bioanorganische Chemie, Mülheim an der Ruhr, and Instrumentelle Analytische Chemie, Universität Duisburg-Essen, Essen, Germany and Prof. Dr. Urs von Gunten, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, and Ecole Polytechnique Federal de Lausanne, Lausanne, Switzerland.

Download or read book Ozonation of Water and Waste Water written by Christiane Gottschalk and published by John Wiley & Sons. This book was released on 2010-02-01 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The leading resource on ozone technology, this book contains everything from chemical basics to technical and economic concerns. The text has been updated to include the latest developments in water treatment and industrial processes. Following an introduction, the first part looks at toxicology, reaction mechanisms and full-scale applications, while Part B covers experimental design, equipment and analytical methods, mass transfer, reaction kinetics and the application of ozone in combined processes.

Download or read book Ozone Reaction Kinetics for Water and Wastewater Systems written by Fernando J. Beltran and published by CRC Press. This book was released on 2003-12-29 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in ozonation for drinking water and wastewater treatment has soared in recent years due to ozone's potency as a disinfectant, and the increasing need to control disinfection byproducts that arise from the chlorination of water and wastewater. Ozone Reaction Kinetics for Water and Wastewater Systems is a comprehensive reference that

Download or read book Optimization of the Ozone and Biofiltration Processes for Multiple Drinking Water Treatment Objectives written by Kenneth H. Carlson and published by . This book was released on 1996 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ozone for Drinking Water Treatment written by International Ozone Association Pan-American Group and published by . This book was released on 1995 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ozone for Drinking Water Treatment written by International Ozone Association. Pan American Committee and published by . This book was released on 1995* with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: