Abstract
In this study, the effectiveness of sewage sludge incineration system with waste heat generator were estimated focused on the energy characteristics of sewage sludge. Specifically, the two system scales of conventional incineration, incineration system with waste heat generator after the advanced centrifugal dehydrator, and various sewage sludge fuelising were compared and evaluated from viewpoints of greenhouse gas emissions and ulitity costs by calculation.
As a result, utility cost of incineration system with waste heat generator was lowest and 30% lower than that of conventional incineration system. Greenhouse gas emission from incineration system with waste heat generator were higher than that from sewage sludge fuelising systems. However it was lowest only in sewage treatment facilities and over 90% lower than that from conventional incineration system. The effectiveness of sewage sludge incineration system with waste heat generator were suggested.
