STUDY OF INTEGRATED TREATMENT SYSTEMS OF ORGANIC WASTE IN A SLUDGE TREATMENT CENTER WITH A FOCUS ON ENERGY RECOVERY

Abstract

 In the field of waste, resource use and energy recovery of waste is important. Especially, organic waste, such as kitchen waste and night soil sludge, have a high potential as circulation resources. This organic waste has been treated separately in incineration facilities and human waste treatment facilities up to now. But, as one of our future directions, we can consider them resources by using an integrated treatment system. This study examined an integrated treatment system in a sludge treatment center , to target a population in a small area. As a result, the integrated treatment system in the sludge treatment center was seen to be effective in terms of energy balance, environmental load and cost. Next this study considered the difference of treatment method, in particular comparing high-rate composting and me-thane fermentation. As a resulet, methane fermentation compared to high-ratee composting turned out to have high cost, but energy balance and environmental load became better.