In this book some of the multifaceted topics that constitute Environmental Biotechnology are dealt with. Environmental Biotechnology employs microorganisms to remove contaminants from wastewater. There is a growing realization world over that Biotechnology along with Environmental Engineering is going to be the major thrust area in the new millennium. The use of Biotechnology in design, control and optimization of biological wastewater treatment is steadily increasing, and this book specifically gives a comprehensive idea of this rapidly growing field.