INFLUENCE OF ATMOSPHERIC GASES ON THE TREATMENT OF MISCELLANEOUS SOLID WASTES BY PLASMA MELTING TECHNOLOGY

摘要

The material properties of the treated waste forms and the behavior of radionuclides found in the plasma melting tests of simulated miscellaneous solid wastes (iron, fly ash and wood) with cold tracers were examined by using different heating atmospheric gases. The material properties were changed with increasing iron oxide content in the slag layers by changing atmospheric gases. The results showed a homogeneous distribution of cold tracers and low leaching rate of it from the treated waste forms appropriate for shallow land burial site disposal in every atmospheric gas. The high residual rate of Cs in the slag layers (about 70/100) was obtained in the plasma melting process except the extremely high reductive atmospheric condition.