This book describes the state-of-the-art advances in computer-based plant control. The material presented is intended to provide an introductory textbook in control and instrumentation technology for Wastewater Treatment (WWT) Plants. The book is aimed at WWT plant operators, process design and control engineers, works managers and those who are involved in the design, installation, commissioning and operation of WWT plants. The book is also a good reference source for undergraduate and post graduate students. The book covers control theory, WWT plant modelling and simulation, supervisory control, data management, sensors, virtual instrumentation, expert systems, neural network and fuzzy logic.Michael A Johnson is the author of 'Control and Instrumentation for Wastewater Treatment Plants (Advances in Industrial Control)', published 1999 under ISBN 9781852330545 and ISBN 1852330546.