| Abstract [eng] |
The article presents a decomposition method of chemical waste (old pesticides) with the help of an air plasma stream, when temperature in plasma thermoreactor zone reaches more than 4500ºC. Technical solutions for dosage of pesticides (Caratan, Fenturan, DNOK, and DDT), their decomposition in plasma stream and collection of pollutants are given. The tests of a performed technological process “in situ” are described, ashes analysis after decomposition is made, and the limits of emitted pollutants to the air are found according to the environmental norma-tive document “The Main Requirements for Burning of Waste LAND 19-99”. The research shows that, even in the case of a “clean” experiment without any filtering system, the concentration of carbon monoxide is lower than the limit for 2 to 13 times, sulphur dioxide – for about 11 times, and chlorine combinations are destructed completely. Conclusions show the application fields of destructed materials, indicate the other decomposable materials. This plasma system could be adapted for the synthesis of new nonfusible materials, too. |
