This book focuses on the various measures and techniques for the collection, recycling, treatment of waste and environmental assessment. It explores all the important aspects of waste management and environmental conservation with the help of topics such as green energy, waste water treatment, assessment of heavy metals, etc. in the present scenario. It includes state-of-the-art inputs and evaluations by eminent experts from around the globe, in this field. It aims to serve as a reference for students and experts alike and contribute to the growth of the discipline.