INDIRECT THERMAL DESORPTION OF DIOXIN AND PESTICIDE CONTAMINATED SOIL AND BUILDING RUBBLE

摘要

An indirectly heated rotary kiln is being used to treat soil and building rubble contaminated with dioxins, pesticides and raw materials and by-products from pesticide production. The overall project is complex and multi faceted involving not only the treatment but also the decontamination and demolition of the buildings, removal and treatment of old production plant and excavation. The problems encountered in protection of the environment and local population from fugitive emissions, the health and safety aspect of the workers and their monitoring had serious consequences for the project and its cost and are themselves in some respects ground breaking. This paper will concentrate however on the technical and chemical aspects of the thermal treatment and the measures required to mitigate expected and some unexpected complications.