하수슬러지 회전체형 건조로와 일체형 활성탄화로 개발

Abstract

Treatment of sewage sludge is a difficult to carriage and proposal because high content of water, generation of odor and high cohesion. To treatment of this sewage sludge, carbonization is attraction the attention. In this study, the adsorption characteristics and the optimum operated conditions are confirmed to prepare adsorbent derived sewage sludge and the combined carbonization activator is developed. Also, the rotor type drier is developed for satisfy content of water suitable carbonization-activation reaction and is confirmed for optimum dried conditions. With the result that, optimum operated conditions of the drier are confirmed what drier load "62.5 kg/m3·hr", residence time "26.2 min" and temperature "330 ℃", respectively. At this time, content of water, drying efficiency, and volume loss are shown that 10±2%, 88%, and 60%. Drying characteristics of sewage sludge are analyzed about measuring content of water, elemental analyzer, EDX and GC. Optimum operated conditions of carbonization activator are confirmed what activated temperature “840 ℃”, input of steam “70 g/min”, activated time “30 min” and feeding amount of dried sludge “10.8 kg/d”, respectively. At this time, the iodine adsorptivity is maximized that 328.1 mg/g. Through this result, activated carbon derived from sewage sludge is confirmed to being pore development. And also, by using nanoPOROSITY, SEM and EDX are confirmed that pore development and structure, element compound and content.