The processes of the plasma incineration in technology of waste utilization and waste disposal are investigated. The main advantages of technologies based on high-temperature plasma impact on materials, as well as the main directions of their application in waste management strategies are noted. Due to the high temperatures of the plasma jet (up to 20 thousand K), the speed of the process, the small influence of atmospheric oxygen, the necessary conditions for the neutralization of almost any toxic, and under certain conditions, radioactive gases arise. A generalized classification of plasma torches according to the functional and design features specific to application in environmental technologies is presented. It is noted that the evaluation of the efficiency of toxic gases neutralization with the use of this type plasmatrons is a multiparameter problem, since in addition to the design should take into account the gas-dynamic and thermal power parameters of the technology. The gas-dynamic parameters of the air-plasma flow in the plasma torch mixing chamber for ecology technologies are determined by methods of mathematical modeling. The characteristic temperatures, velocities and heating times of the utilized gas in different areas of the mixing chamber are determined. The directions of further research and development necessary to create a technology of plasma incineration with maximum efficiency of disinfection are outlined. The issues of plasma incineration introduction at certain stages of technologies of high-temperature waste utilization and disposal are also considered.