The management of solid waste has become a major problem in developing countries and a large fraction consists of organic household waste. This book investigates the environmental impacts and health hazards as a result from inadequate management of this waste flow. It also reports on existing decentralised composting and anaerobic digestions technologies, including: windrow, box/bin/barrel, THM, aerated static pile, in-vessel, vermi, ARTI compact biogas digester and BARC''S NISARG-RUNA. The common constraints for successful implementation of these technologies are discussed, as well as recommendations for future projects. Professionals involved or students studying waste management should find this book a useful tool to gain an insight into the complex interactions between the social, economic and environmental aspects of organic waste management.