Download or read book Trace Organic Removal by Photochemical Oxidation written by Supriya Kumar Sen Gupta and published by Chalk River, Ont. : Waste Processing Technology, Chalk River Laboratories. This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trace organic removal using photochemical oxidation and reverse osmosis technologies written by S. K. Sengupta and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trace organic removal using oil coalescence and photochemical oxidation technologies written by S. K. Sen Gupta and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ozone based advanced oxidation processes for trace organic contaminants removal in waste water written by Ze Liu (Doctor of Bioscience Engineering) and published by . This book was released on 2020 with total page 0 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 Advanced Oxidation Processes for Water and Wastewater Treatment written by Simon Parsons and published by IWA Publishing. This book was released on 2004-03-01 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: The suitability of Advanced Oxidation Processes (AOPs) for pollutant degradation was recognised in the early 1970s and much research and development work has been undertaken to commercialise some of these processes. AOPs have shown great potential in treating pollutants at both low and high concentrations and have found applications as diverse as ground water treatment, municipal wastewater sludge destruction and VOCs control. Advanced Oxidation Processes for Water and Wastewater Treatment is an overview of the advanced oxidation processes currently used or proposed for the remediation of water, wastewater, odours and sludge. The book contains two opening chapters which present introductions to advanced oxidation processes and a background to UV photolysis, seven chapters focusing on individual advanced oxidation processes and, finally, three chapters concentrating on selected applications of advanced oxidation processes. Advanced Oxidation Processes for Water and Wastewater Treatment will be invaluable to readers interested in water and wastewater treatment processes, including professionals and suppliers, as well as students and academics studying in this area. Dr Simon Parsons is a Senior Lecturer in Water Sciences at Cranfield University with ten years' experience of industrial and academic research and development.
Download or read book Advanced Oxidation Processes for Water Treatment written by Mihaela I. Stefan and published by IWA Publishing. This book was released on 2017-09-15 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Oxidation Processes (AOPs) rely on the efficient generation of reactive radical species and are increasingly attractive options for water remediation from a wide variety of organic micropollutants of human health and/or environmental concern. Advanced Oxidation Processes for Water Treatment covers the key advanced oxidation processes developed for chemical contaminant destruction in polluted water sources, some of which have been implemented successfully at water treatment plants around the world. The book is structured in two sections; the first part is dedicated to the most relevant AOPs, whereas the topics covered in the second section include the photochemistry of chemical contaminants in the aquatic environment, advanced water treatment for water reuse, implementation of advanced treatment processes for drinking water production at a state-of-the art water treatment plant in Europe, advanced treatment of municipal and industrial wastewater, and green technologies for water remediation. The advanced oxidation processes discussed in the book cover the following aspects: - Process principles including the most recent scientific findings and interpretation. - Classes of compounds suitable to AOP treatment and examples of reaction mechanisms. - Chemical and photochemical degradation kinetics and modelling. - Water quality impact on process performance and practical considerations on process parameter selection criteria. - Process limitations and byproduct formation and strategies to mitigate any potential adverse effects on the treated water quality. - AOP equipment design and economics considerations. - Research studies and outcomes. - Case studies relevant to process implementation to water treatment. - Commercial applications. - Future research needs. Advanced Oxidation Processes for Water Treatment presents the most recent scientific and technological achievements in process understanding and implementation, and addresses to anyone interested in water remediation, including water industry professionals, consulting engineers, regulators, academics, students. Editor: Mihaela I. Stefan - Trojan Technologies - Canada
Download or read book Radioactive Waste Management written by and published by . This book was released on 1996 with total page 584 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 Advanced Oxidation Processes for Wastewater Treatment written by Maulin P Shah and published by CRC Press. This book was released on 2022-03-09 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Oxidation Processes for Wastewater Treatment: An Innovative Approach: This book highlights the importance of various innovative advanced oxidation technology to clean up the environment from pollution caused by human activities. It assesses the potential application of several existing bioremediation techniques and introduces new emerging technologies. This book is an updated vision of the existing advanced oxidation strategies with their limitations and challenges and their potential application to remove environmental pollutants. It also introduces the new trends and advances in environmental bioremediation technology with thorough discussion of recent developments in this field. This book highlights the importance of different innovative advanced oxidation process to deal with the ever-increasing number of environmental pollutants. Features: Illustrates the importance of various advance oxidation processes in effluent treatment plant Points out the reuse of the treated wastewater through emerging advance oxidation technologies for effluent treatment plant Highlights the recovery of resources from wastewater Pays attention to the occurrence of novel micro-pollutants Emphasizes the role of nanotechnology in bioremediation of pollutants Introduces new trends in environmental bioremediation
Download or read book Membrane Biological Reactors written by Faisal I. Hai and published by IWA Publishing. This book was released on 2013-11-01 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the MBR market has experienced unprecedented growth. The best practice in the field is constantly changing and unique quality requirements and management issues are regularly emerging. Membrane Biological Reactors: Theory, Modeling, Design, Management and Applications to Wastewater Reuse comprehensively covers the salient features and emerging issues associated with the MBR technology. The book provides thorough coverage starting from biological aspects and fundamentals of membranes, via modeling and design concepts, to practitioners’ perspective and good application examples. Membrane Biological Reactors focuses on all the relevant emerging issues raised by including the latest research from renowned experts in the field. It is a valuable reference to the academic and professional community and suitable for undergraduate and postgraduate teaching in Environmental Engineering, Chemical Engineering and Biotechnology. Editors: Faisal I. Hai, University of Wollongong, Australia Kazuo Yamamoto, University of Tokyo, Japan Chung-Hak Lee, Seoul National University, Korea.
Download or read book Potential Applications of Concentrated Solar Energy written by National Research Council and published by National Academies Press. This book was released on 1991-02-01 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book assesses the current state of the field in a number of potential applications and discusses technologies for which concentrated solar energy might be utilized. It contains all the papers submitted by the speakers as well as summaries of the presentations and discussions that followed each session.
Download or read book Trace Organics Removal by Air Stripping written by Environmental Science & Engineering, Inc and published by . This book was released on 1980 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatment of Trace Organic Contaminants and Nutrients in Open Water Unit Process Wetlands written by Justin Thomas Jasper and published by . This book was released on 2014 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatment wetlands are becoming an increasing popular approach for nutrient removal from municipal wastewater effluent due to their low cost and energy requirements, as well as the ancillary benefits they provide. Recently, they have also been considered as a means of removing wastewater-derived trace organic contaminants. Initial studies of the removal of trace organic contaminants in treatment wetlands indicate that removal is often insignificant and is highly variable among systems. Efforts to improve wetland treatment efficiency have been hampered by a limited understanding of trace organic contaminant removal mechanisms. In this research, a novel type of wetland, consisting of a shallow cell lined with geotextile fabric to prevent the growth of emergent macrophytes, is considered for the removal of wastewater-derived trace organic contaminants and nutrients. When combined with other types of wetland cells in a unit process fashion (i.e., wetland cells designed to remove specific contaminants are arranged in series), open-water unit process wetlands may provide a basis for using treatment wetlands to remove a wide range of trace organic contaminants from municipal wastewater effluent. To understand how open-water treatment wetlands could be integrated with other types of wetland cells in unit process wetlands, the treatment wetland literature was critically reviewed (Chapter 2). Removal mechanisms of trace organic contaminants and pathogens in treatment wetlands were considered, including sorption, biotransformation, photolysis, sedimentation, predation, and photoinactivation. Methods of enhancing these mechanisms in unit process wetland cells were also identified, both in commonly employed vegetated cells and through the development of novel wetland configurations, such as open-water cells. To further optimize unit process wetlands, the arrangement of wetland cells was evaluated. The application of the unit process concept to a wide range of wastewater contaminants has the potential to make treatment wetlands a more attractive component of urban water infrastructure. To assess the ability of open-water cells to exploit sunlight photolysis to remove trace organic contaminants from municipal wastewater effluent, a photochemical model was calibrated using measured photolysis rates for atenolol, carbamazepine, propranolol, and sulfamethoxazole in wetland water under representative conditions (Chapter 3). Contaminant transformation by hydroxyl radical and carbonate radical were predicted from steady-state radical concentrations measured at pH values between 8 and 10. Direct photolysis rates and the effects of light screening by dissolved organic matter on photolysis rates were estimated using solar irradiance data, contaminant quantum yields, and light screening factors. The model was applied to predict the land area required to achieve 90% removal of a suite of wastewater-derived organic contaminants by sunlight-induced reactions under a variety of conditions. Results suggest that during summer, open-water cells that receive a million gallons per day of nitrified wastewater effluent can remove 90% of most compounds in an area comparable to existing full-scale wetland systems. The bottoms of open-water wetland cells are rapidly colonized by a biomat consisting of an assemblage of photosynthetic and heterotrophic microorganisms. To assess the contribution of biotransformation in this system to the overall attenuation of trace organic contaminants, transformation rates of test compounds measured in microcosms were compared with attenuation rates measured in a pilot-scale system (Chapter 4). Biotransformation was the dominant removal mechanism in the pilot-scale system for atenolol, metoprolol, and trimethoprim, while sulfamethoxazole and propranolol were attenuated mainly via photolysis. In microcosm experiments, biotransformation rates increased for metoprolol and propranolol when algal photosynthesis was supported by irradiation with visible light. Biotransformation rates increased for trimethoprim and sulfamethoxazole in the dark, when microbial respiration depleted dissolved oxygen concentrations within the biomat. These observations are consistent with previous studies in wastewater treatment plants and wetlands at different dissolved oxygen concentrations. During summer, atenolol, metoprolol, and propranolol were rapidly attenuated in the pilot-scale system (t1/2 0.5 d), trimethoprim and sulfamethoxazole were transformed more slowly (t1/2 H"1.5-2 d), and carbamazepine was recalcitrant (t1/230 d). The combination of biotransformation and photolysis resulted in overall transformation rates that were 10 to 100 times faster than those previously measured in vegetated wetlands. In addition to removing trace organic contaminants, the diffuse biomat formed on the bottom of open-water wetland cells provides conditions conducive to NO3- removal via microbial denitrification, as well as anaerobic ammonium oxidation (anammox). To assess this process, nitrogen cycling was evaluated over a 3-year period in an open-water wetland cell (Chapter 5). Approximately two-thirds of the NO3- entering the cell was removed on an annual basis. Microcosm studies indicated that NO3- removal was mainly attributable to denitrification within the diffuse biomat (i.e., 80"20%), with accretion of assimilated nitrogen accounting for less than 3% of the NO3- removed. The importance of denitrification to NO3- removal was supported by the presence of denitrifying genes (nirS and nirK) within the biomat. While modest when compared to the presence of denitrifying genes, the anammox-specific gene hydrazine synthase (hzs) was detected at higher concentrations near the biomat bottom. This observation, along with the simultaneous presence of ammonium and nitrate in the biomat, suggested that anammox may have been responsible for some of the NO3- removal. The annual temperature-corrected areal first-order NO3- removal rate (k20=59.4"6.2 m yr 1) was higher than values reported for more than 75% of vegetated wetlands treating effluent where NO3- served as the main nitrogen species (e.g., nitrified secondary wastewater effluent and agricultural runoff). Inclusion of shallow, open-water cells in unit-process wetland systems has the potential to provide simultaneous removal of trace organic contaminants (Chapters 3 and 4) and pathogens, in addition to NO3-, in land areas similar to those occupied by existing full-scale treatment wetlands.
Download or read book Photochemical Purification of Water and Air written by Thomas Oppenländer and published by John Wiley & Sons. This book was released on 2007-06-27 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the treatment of water and exhaust gas using ultraviolet (UV) light offers both ecological and economic advantages, information on photo-initiated advanced oxidation technologies (AOTs) has been dispersed among various journals and proceedings until now. This authoritative and comprehensive handbook is the first to cover both the photochemical fundamentals and practical applications, including a description of advanced oxidation processes (AOPs) and process engineering of suitable photoreactors. The author presents various real-world examples, including economic aspects, while many references to current scientific literature facilitate access to current research topics relevant for water and air industries. Throughout, over 140 detailed figures visualize photochemical and photophysical phenomena, and help in interpreting important research results. From the foreword by James R. Bolton (President of Bolton Photosciences Inc., Executive Director of the International Ultraviolet Association (IUVA)): "Prof. Oppenländer is well qualified to write about the AOPs/AOTs, since he has contributed to this literature in a very significant manner. This book will be of considerable value to graduate students, science and engineering faculty, scientists, process engineers and sales engineers in industry, government regulators and health professionals."
Download or read book Advanced Oxidation Processes written by Prabir Ghosh and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced oxidation processes (AOPs) are the technologies that generally use the hydroxyl radicals, the ultimate oxidant for the remediation of organic contaminants in wastewater. These are highly effective novel methods speeding up the oxidation process. AOP can combine with ozone (O3), catalyst, or ultraviolet (UV) irradiation to offer a powerful treatment of wastewater. Future research should be focused on enhancing the properties of heterogeneous catalysts in AOPs. This chapter reports general review of different AOPs utilized for the removal of various phenolic compounds and textile dyes in wastewater. The chapter also aimed at an investigation of efficiency for different photochemical AOPs. The authors have carried out the experimental runs at a laboratory scale for the removal of malachite green oxalate (MGO) dye with photochemical AOPs. The influence of ferrous ions and oxidant dosage on percentage decolorization of MGO in wastewater has been reported. The discussion extends to the utilization of different modified photocatalysts for the photocatalysis process. The future challenges, such as the adoption of strategies for the integration of processes and the decrement in operational cost of AOPs, are discussed. The discussion covers the utilization of different heterogeneous catalysts, the reduction of input demands of chemicals and energy for the processes.
