Possibility of Using Secondary Waste from Thermal Processing of Municipal Waste

Abstract

The problem related to the continuous increase in the amount of municipal waste generated requires taking decisive actions both at the source (education of waste "producers") and related to the method of its disposal. One way is to thermally transform waste. This action does not completely solve the problem because the thermal process produces secondary waste. However, this allows for a significant reduction in the original weight of waste by approximately 60–70% and the volume by approximately 80–95%. From the physical side, secondary waste consists of slags, ashes and dust, and these – according to the current classification – are partly classified as hazardous waste. The article presents the concept of their use in mining technologies related to filling underground voids. For this purpose, selected waste should be tested for the possibility of its use in waste recovery installations. The paper presents preliminary results of testing the physical parameters of selected waste, as well as chemical tests related to determining their composition. A direction for further research on "technological" parameters was indicated, the knowledge of which will be necessary for the design of a future waste recovery installation.