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The definitive work on Dissolved Air Flotation Systems (DAF) for clarification of drinking water Dissolved Air Flotation for Water Clarification is a complete design and application source for the water industry divided into three parts: The first develops a fundamental basis for understanding how the process works, and might be adapted to work better. The second provides a reference for design engineers, water operators, and water managers regarding applications where DAF might be incorporated in an overall treatment scheme. The third develops the necessary DAF design concepts and to illustrate them by description of practical applications. Using DAF to remove particles is not only an important process for conventional drinking water plants, but may also be used as a pre-treatment process in membrane plants including reverse osmosis for water desalinization, and in water reuse applications. Dissolved Air Flotation for Water Clarification offers: Information on new applications of DAF in advanced water treatment, desalinization, water reuse, and industrial treatment in food, waste, and pulp and paper Detailed examples, including the world’s largest new DAF plant ever built – Croton, NY water treatment plant A single volume entirely devoted to DAF for drinking water clarification Coverage of conventional and pre-treatment processes SI and conventional units throughout
The unit process approach, common in the field of chemical engineering, was introduced about 1962 to the field of environmental engineering. An understanding of unit processes is the foundation for continued learning and for designing treatment systems. The time is ripe for a new textbook that delineates the role of unit process principles in environmental engineering. Suitable for a two-semester course, Water Treatment Unit Processes: Physical and Chemical provides the grounding in the underlying principles of each unit process that students need in order to link theory to practice. Bridging the gap between scientific principles and engineering practice, the book covers approaches that are common to all unit processes as well as principles that characterize each unit process. Integrating theory into algorithms for practice, Professor Hendricks emphasizes the fundamentals, using simple explanations and avoiding models that are too complex mathematically, allowing students to assimilate principles without getting sidelined by excess calculations. Applications of unit processes principles are illustrated by example problems in each chapter. Student problems are provided at the end of each chapter; the solutions manual can be downloaded from the CRC Press Web site. Excel spreadsheets are integrated into the text as tables designated by a "CD" prefix. Certain spreadsheets illustrate the idea of "scenarios" that emphasize the idea that design solutions depend upon assumptions and the interactions between design variables. The spreadsheets can be downloaded from the CRC web site. The book has been designed so that each unit process topic is self-contained, with sidebars and examples throughout the text. Each chapter has subheadings, so that students can scan the pages and identify important topics with little effort. Problems, references, and a glossary are found at the end of each chapter. Most chapters contain downloadable Excel spreadsheets integrated into the text and appendices with additional information. Appendices at the end of the book provide useful reference material on various topics that support the text. This design allows students at different levels to easily navigate through the book and professors to assign pertinent sections in the order they prefer. The book gives your students an understanding of the broader aspects of one of the core areas of the environmental engineering curriculum and knowledge important for the design of treatment systems.
This new edition of a classic text has been significantly expanded to cover the most current issues and international standards are examined in-depth, with detailed coverage of WHO, European, UK and US standards, organisations and practice. Written with the postgraduate and professional water engineer in mind, this text will also be essential reading for undergraduates studying water engineering. COMPREHENSIVE coverage of all aspects of public water supply and treatment for a worldwide market * INCLUDES more coverage of US, European and WHO standards and practice * COVERS important current topics such as EIA and cryptosporidium outbreaks
This book is divided into three sections: the first reviews the main processes available for treating water for drinking (potable) purposes, the second goes into some detail about the design and operation of the non-filtration (clarification) processes, and the third deals exclusively with filtration and related applications. It is intended as a source of practical information rather than a theoretical research treatise and includes discussion of component parts of the process units with reasons for design features as well as operating principles. This book fills a gap between general reviews and research papers, and contains much information which is based on experience passed down within organisations and which tends not to be published. Contents: General Concepts:Introduction and Early HistoryTreatment ProcessesPrimary Treatments:The Behaviour of ParticlesEquipment HydraulicsChemical Reaction Engineering — Continuous Flow SystemsPretreatmentsNon-Flocculating Settlement UnitsSingle Pass Flocculating Settlement TanksRecirculating ClarifiersFluidised Floc Blanket Settlement TanksLamellar ClarifiersDissolved Air FlotationOther Treatment ProcessesPrecipitation SofteningSludge Treatment and DisposalGranular Media Filtration:The Structure and Hydraulics of Granular BedsProcess MechanismsProcess DesignConditioning of the Feed SuspensionBackwashingFilter FloorsTop Side DesignOperation and Control of Multifilter InstallationsFilter DesignUpflow FiltrationContinuous FiltersBiological ApplicationsMiscellaneous ApplicationsCommissioning and ProblemsFilter Media Readership: Engineers, scientists and students in water treatment. Keywords:Water Treatment;Clarification;Dissolved Air Flotation;Sand Filtration;Filter Design;Particle Settlement;Flocculation;Precipitation Softening;Floc Blanket Settlement;Water Treatment Wastes
"This new edition introduces several new subjects, including value engineering, watershed management, dissolved air flotation process, filtered reservoir (clearwell) design, and electrical system design. It provides expanded and updated coverage of objectives for finished water quality, instrumentation and control, disinfection process, ozonation, disinfection by-product control, the GAC process, and the membrane filtration process. A hands-on resource for civil engineers and managers, whether working on new facilities or redesigning and rebuilding existing facilities."--Jacket.

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