ORGANIC MATTER TREATING DEVICE

PROBLEM TO BE SOLVED: To provide an org. matter treating device without corroding and abrading a sensor for detecting the water content of a microorganism carrier, capable of being used for a long time and composed at a low cost. SOLUTION: This org. matter treating device is provided with a treating tank 1 housing the carrier of a microorganism decomposing org. matter and into which such org. matter as garbage to be decomposed is charged, an agitator 3 for agitating and mixing the org. matter charged with the carrier housed in the treating tank 1 and a water content detecting means for detecting the water content of the carrier mixed with the org. matter and the carrier is controlled to the water content suitable to the action of the microorganism based on the detcted output. A strain sensor S is attached as the water content detecting means to the outer face of the treating tank 1 in which the strain is generated when the org. matter and carrier are agitated and mixed by the agitator 3, the water content is estimated based on the variation of the strain generated on the outer face of the tank 1 by the agitator 3 and the water content is adjusted in the range suitable to the action of the microorganism.