With the increasingly stringent national and international regulations governing wastewater treatment in todays environment, to develop innovative and more efficient wastewater technologies have become the crying need of the time. In the last few years, research on new methods for wastewater treatment ahs gone from procsses involving, mere phase transfer (e.g. air stripping, activated carbon adsorption etc.) to complete mineralisation of the contaminent to ecologically compatible components i.e. carbon dioxide and water. In order to develop the new technologies for wastewaters treatment in twenty first century, this book will be a guide for opening a new vista in teh field of pollution ecology. This book is a unique compilation of seventy eight research articles of national and international scientists, which will act as a keyboard for students, academicians, researchers, scientists, administrators and ecoplanners.'