A Study on the Thermal Treatment Possibility of Organochlorine Pesticide Containing Wastes

As a result of analyzing the contents of organic chlorine pesticide-containing wastes, HCB 421.8 ng/g, Endosolfan- 2 73.044 ng/g, PeCB 53.972 ng/g, Endosolphan-1 43.649 ng/g respectively. In the case of liquid pesticides, the HCB concentration was the highest at 167.489 ng/g, similar to that of the solid phase, followed by PeCB at 23.462 ng/g. As a result of decomposition experiments on total OCPs among the pesticide liquid and solid phase components, initial concentrations were 597.384 ng/L for liquid pesticides and 198.176 ng/L for solid pesticides. However, the final effluent gas after decomposition showed a decomposition rate of more than 99.99% at a minimum of 0.005 ng/L and a maximum of 0.055 ng/L. Degradation test results for 25 species of OCPs such as PeCB, HCB, and Endosolfan for pesticide solid phase and liquid phase at reaction temperatures of 850℃ and 1,100℃. Of the 25 OCPs in the exhaust gas, trace amounts of PeCB and HCB were detected in the range of 0.006 to 1.025 ng/L at 1,100 ℃ and 850 ℃, and 23 OCPs were not detected. In the case of pesticides, the method of high temperature incineration and high temperature melting is proposed as the designated waste, but detailed methods of treatment conditions such as incineration conditions are not presented. Organochlorine pesticides were decomposed smoothly at 850 ℃ as well as incineration temperature of 1,100 ℃. However, since the dioxin concentration in exhaust gas exceeds 850 ℃, it is safe to operate at more than 1,100 ℃ in order to prevent the possibility of dioxin in advance.