This paper is containing two study. The one is a land treatment of sewage sludge reduction through the indirect heating method and the other verifies conversion possibility of sludge organic matter to auxiliary fuel, steel thermal insulation material, byproduct fertilizer compost and find the suitable recycling method for J city. It was confirmed that about 88 percent of weight reduction for transportation efficiency and method verification. The analysis result of the carbonized product component showed the average low heating value of about 2,850 kcal and the moisture content of 1.4% which means the sludge is suitable as a fuel.

• 모종근(국방기술품질원) | Joung Gun Mo (Defense Agency for Technology and Quality)
• 정한식(경상대학교 에너지기계공학과·해양산업연구소) | Han-Shik Chung (Department of Energy and Mechanical Engineering, Institute of Marine Industry, Gyeongsang National University)
• 이광성(경상대학교 에너지기계공학과) | Kwang Sung Lee (Department of Energy and Mechanical Engineering, Gyeongsang National University) Corresponding author