BEHAVIOR OF ADSORPTION HEAT UNDER DEODORIZATION USING ELECTROLYTICALLY TREATED SLUDGE

Abstract

The sewage sludge generated in the sewage treatment process was changed in quality by electrolytic treatment, and reused as deodorizer. In this research, the heat behavior at the deodorizing process was visualized by the infrared thermal imaging device so that the adsorption mechanism was analyzed, because adsorption always generates heat. The result is that the adsorption heat was immediately generated on the surface of the treated sludge and the heat penetrated vertically into the whole treated sludge. Another result is the unequal adsorption heat; the heat was generated on some points of the surface earlier than other points. Moreover, the heat was generated repeatedly on the same points. The measurement of the vertical movement of heat shows that, first, the adsorption heat penetrated into the sludge exponentially at the earlier stage, and then penetrated while repeating the heat generation and the endothermic reaction, and lastly disappeared by desorption.