Abstract
Currently, more than fifty per cent of sewage sludge generated in municipal wastewatertreatment plants has been incinerated with mainly heavy oil in Japan. The increase inenergy costs over ten years has necessitated the improvements of current incinerationysystems to make them more energ efficient. The objectives of this study are as follows:
to investigate thermal characteristics of dewatered sewage cake.
to review features of incinerationsystems.
to survey process performances of incinerators in wastewater treatment plants.
to evaluate operating conditions of autogeneous combustion of sewage sludge, and
to evaluate economical aspects of autogeneous comnustion system.
