The work summarizes factors influencing on air emissions from various full-scale hazardous waste incinerators (rotary kiln, multiple hearth furnace, starved-air incinerator, fluidized bed incinerator, liquid injection incinerator). Air pollutant emissions from hazardous waste incineration can be minimized not only by flue-gas cleaning. There are many factors that influence on flue-gas composition and the quantity of air pollutants formed during incineration: the type, the composition and the quantity of waste, the way of waste introducing to the incinerator, excess air ratio, combustion temperature, retention time of exhaust gases etc. Special attention was paid to the loading of waste and incineration conditions that can cause incomplete combustion. Hazardous wastes susceptible to incomplete combustion should be subjected to thermal disposal only in systems that provide adequate conditions for their full and complete combustion - preferably in a mixture of easy combustible waste. If the incineration process is wrongly realized, the quantity of the pollutant formation may be very significant and difficult to control - even with the help the best flue-gas cleaning system. Conclusions from this study can be used by operators of hazardous waste incinerators (especially manually operated) to optimize waste incineration.

English title: Factors influencing the flue gases composition and the air pollutant emissions from hazardous waste incineration.