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دانلود عمران و معماری

جزئيات دانلود

Activated Carbon for Water and Wastewater Treatment Activated Carbon for Water and Wastewater Treatment

Activated Carbon for Water and Wastewater Treatment

Integration of Adsorption and Biological Treatment

Purpose of the Book

The subject of the book is the ‘integrated application of activated carbon adsorptionwith biological processes in water and wastewater treatment.’ The enhancement ofbiological mechanisms by activated carbon adsorption merits serious study since ithas been shown to be an effective method for the elimination of various organicand inorganic environmental pollutants.During my studies over many years on adsorption and biodegradation, alone ortogether with my students, I realized with some surprise that the existing books onthese subjects were either addressing activated carbon adsorption or biologicaltreatment, but not both together in an integrated manner. I also realized that fewbooks contained single chapters that dealt with either PACT or BAC processes.Whileinvaluable work had been published in the form of papers or chapters, all theseaddressed some specific aspect of integrated treatment, and there was no comprehensivebook that gave a detailed account of the different aspects of integratedadsorption and biological treatment. Thus, my idea to write this book originated frommy own needs, and the idea was then supported by the book’s co-author, O¨ zgu¨rAktas- . Our goal in writing the book is to provide the reader with a document thatattempts to present in a unified way most of the material to date on this subject.The project necessitated an extensive literature survey spanning a period ofapproximately 40 years, from the beginning of integrated treatment in the 1970s tothe present day. As a result, the book was inevitably expanded to include a widerange of topics. It covers the positioning of various integrated adsorption andbiological removal treatment systems within the water and wastewater treatmenttrain, describes how various pollutants can be removed, highlights the mechanismsthat underlie the improved performance in small- and full-scale integratedsystems, and extensively discusses to what extent pollutants can be eliminatedfrom water or wastewater and what other side advantages are to be expected.However, for a full understanding, only to look at the underlying mechanisms andextent of removal would be inadequate. Therefore, we have also attempted todescribe and analyze  uspended- or attached-growth reactors involving PAC orGAC in mathematical terms. In this context, models and wastewater treatment systems are also discussed. Results from small- and fullscalewater and wastewate treatment are best understood if mechanisms andmathematical analyses of integrated adsorption and biological treatment systemsare considered jointly.In preparing this book, the assumption was made that the reader is equippedwith basic knowledge of environmental science and technology, particularly thebasics of adsorption and biological treatment. Thus, the book is not an elementarytextbook, but is intended for people who are already involved with adsorption and/or biological processes. The principal readership of this book will be in the academiccommunity, to whom the book will hopefully be useful. Some parts of thebook may also be used for teaching of graduate level courses in environmental andchemical engineering.The hope is that the book will appeal to people from both science and engineeringdisciplines. For scientists, who generally deal with fundamentals, it may be ofinterest to see the true value of integrated processes in practice. To practicingpeople, such as engineers operating water or wastewater treatment plants, whoare mostly concerned with results, the book should provide a fundamental understandingof the main mechanisms in integrated adsorption and biotreatment. Itshould also serve as a work of reference for all those engaged in institutions relatingto water quality, activated carbon production, and activated carbon adsorption.

 

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