This research studies physicochemical characteristics which can influence process in order to treat sewage sludge of stage 2 of resource recovery plant. In addition, it seeks also to reduce the variability which can be caused by treatment processes and develop a plan for an unexpected situation. In 2014, we examined the factors which can have an effect on plant stage 2 such as hydrogen ion concentration, moisture content, chloride ion concentration, viscosity, organic compound content, odor, etc. Moreover this research targeted sludge from twelve local areas that is delivered to stage 2 of a resource recovery plant. Consequentially, the study has good results in hydrogen ion concentration and moisture content. On the other hand, chloride ion concentration and viscosity cause increased drying time or corrode the facility, except for a part of the sludge. In addition, the study demonstrates that sludge of a sewage treatment plant with a high organic content generates much odor when we researched odor and organic content. Moreover, organic compound content contributes to superiority in quality but could also be a weakness. According to the above seasonal data, the operation conditions of stage 2 facilities can be optimized if the sludge carry-in of each local area is controlled or carried into other facilities. Keywords : Malodor, Physicochemical characteristic, Sewage sludge, Sludge recycling facility