The book is devoted to the problem of the plasma utilization of solid wastes. The book consists of some papers written by the authors that workers in "Kurchatov Institute". The papers were written in period 2006 - 2017 years. The themes of papers are some physical aspects of direct current arc plasma torch operation, the equipment for plasma treatment of Solid Wastes based on direct current arc plasma torches, the technology of plasma treatment of solid wastes, plasma treatment of radioactive wastes. The book may be of interesting to specialists working in the field of plasma technology of waste processing, to the specialists interesting in the development of equipment for plasma waste processing, as well as the physical and chemical processes occurring during the operation of the equipment.