This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in the field of environmental engineering. It is the branch of engineering that uses the principles and practices of engineering to protect the environment and reduce the harmful effects of human activities on the environment. The various sub-fields of environmental engineering along with technological progress that have future implications are glanced at in this book. The objective of this text is to provide a comprehensive overview of this field and its applications. It also sheds light on some of the unexplored aspects of environmental engineering. It deals with recycling, waste disposal, waste water management, air pollution control, industrial hygiene, radiation protection and environmental sustainability. This book will help the readers in keeping pace with the rapid changes in this area of study.