TREATMENT METHOD AND TREATMENT EQUIPMENT FOR ORGANIC WASTE

摘要

PROBLEM TO BE SOLVED: To provide a treating method and a treating equipment capable of effectively reducing the weight of organic wastes with a simple system at an inexpensive running cost. SOLUTION: The treating method for reducing the weight of the organic wastes by aerobically digesting the organic wastes comprises aerobically digesting the organic wastes in the state of raising the treating temperature by >=30 deg.C than the feed temperature by the heat of biological oxidation in an aerobic digesting process step 2 and solubilizing the resultant heated up aerobically digested sludge 8 by a physicochemical solubilizing means 4, then returning the solubilized sludge 10 to the aerobic digesting process step 2. The above organic wastes are a mixture composed of organic sludge 5 and garbage and/or waste oil 6 and the organic sludge 5 is thickened by a mechanical thickening means 1 and may be physicochemically solubilized. The aerobically digested sludge can be obtained by treating the sludge 8 subjected to a membrane separation 3 by the solubilizing means 4 by ultrasonic waves or chemical oxidation.