Waste management refers to the actions and activities through which waste is managed from its origin to its final disposal. It involves the collection, transportation, treatment and disposal of waste. Different kinds of wastes such as solid, liquid or gaseous waste are treated and disposed through different management processes. Industries and households are the major sources of chemical and biological wastes. Waste management aims to reduce the harmful effects of waste, and protect human health and the environment. Landfill and incineration are two major disposal methods used for waste management. It also includes recycling and re-using waste. Recycling refers to the collection and re-use of waste materials. Re-use includes various processes such as biological reprocessing, energy recovery and pyrolysis. This book provides comprehensive insights into the field of waste management. Most of the topics introduced herein cover new techniques of waste management. This book will provide comprehensive knowledge to the readers.