Using Vitrification for Sewage Sludge Combustion Ash Disposal

The aim of this paper is to show possibilities for effective processing of hazardous waste using the vitrification method, which is recommended for disposing of ash from the combustion of sewage sludge and developing a process for the conversion of waste to a sustainable and environmentally safe product. The use of vitrification solves the problem of utilizing some hazardous waste by simultaneously reducing or eliminating their harmful effects and decreasing their volume. More and more research has been undertaken to determine specific properties of the resulting products (vitrified waste), in particular regarding the sustainability to ensure safe storage or in specific commercial applications. We describe the methods of processing of ash from combustion of sewage sludge to obtain “vitrified aggregates” as well “glass beads” that are useful substitutes for commonly used products.