Transformation Processes
For the representation of many simultaneous transformation processes the format of the stoichiometric matrix has established itself in environmental engineering sciences. It goes back to the introduction of the activated sludge model no.1 (Henze et al., 1
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Willi Gujer
Systems Analysis for Water Technology
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Prof. Dr. Willi Gujer ETH Zurich Institute of Environmental Engineering Wolfgang-Pauli-Straße 15 8083 Zurich Switzerland [email protected]
ISBN 978-3-540-77277-4
e-ISBN 978-3-540-77287-1
DOI 10.1007/978-3-540-77287-1 Library of Congress Control Number: 2008924075 © 2008 Springer-Verlag Berlin Heidelberg This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permissions for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Cover design: Frido Steinen-Broo, eStudio Calamar, Spain Printed on acid-free paper 987654321 springer.com
Preface
This book has a rather long history. It goes back to 1980, when environmental engineering evolved from sanitary engineering as a new and broader engineering discipline. I had the assignment to teach a course in mathematical modeling of technical systems as part of a new postgraduate course in Urban Water Management and Water Pollution Control at ETH in Zurich. I decided to teach this course on a rather abstract level, with the goal of introducing methods that are generally applicable across the different disciplines of what was then defined as environmental engineering. Now I teach a graduate course in methods for urban water management, which heavily relies on the material I compiled in the 1980s. This course is offered in the first semester of the master education in environmental engineering at ETH; it requires four hours of lecturing and problem sessions a week during one semester. The students earn six credit units (ECTS). Of all the engineering disciplines, environmental engineering appears to be among those that maintain the most intimate contacts with the natural science disciplines. Only a detailed understanding of chemical, physical, and microbial processes will lead to engineered systems that fulfill the requirements of society and the environment and at the same time do not require excessive economic and natural resources. Mathematical models are a crucial base for engineering design – in environmental engineering they typically combine a quantitative description of chemical and microbial transformation processes with the description of the physical transport processes within the system of interest. This book introduces methods and generic models that support the development of detailed
