NOVELTY - The organic-matter is dried in dryer, and carbonized in carbonization furnace (1), and thermally decomposed gas is generated. The generated gas, portion of dried waste gas and combustion air are injected to cracked gas combustion furnace (2) at reduced environment, and combustion process is performed. The other combustion air and dried waste gas are supplied at reduced environment, and combustion process is performed at oxidizing atmosphere, and finally combustion processing is performed. Thus, organic-matter carbonization-process system is treated.    USE - For thermal decomposition gas treatment of high water content organic-matter carbonization-process system for processing organic-matters such as sludge generated in sewage works, food processing residue and livestock farming excrements.    ADVANTAGE - The method enables complete combustion with the reduction of nitrogen oxide amount. The cracked gas combustion furnace has improved durability and low fuel consumption.    DETAILED DESCRIPTION - The high water content organic-matter is dry-processed in dryer, and carbonization process is carried out in carbonization furnace and thermal decomposition gas is generated. The generated thermal decomposition gas, a portion of drying waste gas and primary combustion air are injected into cracked gas combustion furnace under reduced environment, and combustion processing is carried out. Subsequently, the secondary combustion air and secondary drying waste gas are supplied under reduced environment, and combustion process is carried out under oxidizing atmosphere. Then, final combustion processing is carried out. Thus, the high water content-organic matter carbonization-process system is treated. An INDEPENDENT CLAIM is included for thermal decomposition gas treatment equipment of the high water content organic-matter carbonization-process system.    DESCRIPTION OF DRAWING(S) - The figure shows the systematic diagram of the high water content organic-matter carbonization-process apparatus. (Drawing includes non-English language text)    Carbonization furnace (1)    Cracked gas combustion furnace (2)    Combustion apparatus (3)    Carbide (6)    Heat exchanger (7)