Water which has been used for various domestic, industrial and
agricultural purposes, and is not suitable for human consumption is
termed as wastewater. Metals, plastics and human excreta are some of the
common water pollutants. The processes used to remove these contaminants
from water so that it can be returned to the water cycle with minimum
environmental impact are studied under the discipline of wastewater
treatment. Water treatment techniques include grit removal, settling,
aeration, filtration, disinfection, and sludge treatment. Some of the
different types of wastewater treatment plants are sewage treatment
plants, Leachate treatment plants and agricultural wastewater treatment
plants. This book attempts to understand the multiple branches that fall
under the discipline of wastewater evaluation and management and how
such concepts have practical applications. It elucidates new techniques
and their applications in a multidisciplinary manner. As this field is
emerging at a rapid pace, the contents of this book will help the
readers understand the modern concepts and applications of the subject.