NOVELTY - The device comprises a sludge decrement facility for concentrating sludge in a microbial oxidation bath using a thickener. The thickener is in contact with air or oxygen and the aerobic decomposition microorganism. A drug or sludge reforming tub removes the dehydration interfering substance obtained from a dehydrator. The dehydrator reduces water content in the oxidized sludge to obtain a sludge cake which is not processed with the microorganism oxidation bath. A waste power plant produces energy through waste heat obtained from the sludge decrement facility.    USE - The device is useful for energization of sludge (claimed) generated from excrements of livestock, food effluent and industry.    ADVANTAGE - The device minimizes water content in the sludge cake with excellent oxygen transfer efficiency and reduced sludge treatment cost and bad small.    DETAILED DESCRIPTION - The device comprises a sludge decrement facility for concentrating sludge in a microbial oxidation bath using a thickener. The thickener is in contact with air or oxygen and the aerobic decomposition microorganism. A drug or sludge reforming tub removes the dehydration interfering substance obtained from a dehydrator. The dehydrator reduces water content in the oxidized sludge to obtain a sludge cake, which is not processed with the microorganism oxidation bath. A waste power plant produces energy through waste heat obtained from the sludge decrement facility. The sludge decrement facility receives the sludge, and concentrates, oxidizes, dehydrates and reduces the volume of the sludge cake. The sludge cake is pulverized into powder fuel as energy source. The powder fuel is combusted by the drying fuel recycling facility and an exhaust gas processing facility using electricity for processing exhaust gas generated in the powder fuel combustion process, reducing odor and removing harmful material. A raw material storage tank is connected with a drying fuel recycling facility for storing fuel pulverized by a powder manufacturing machine that pulverize the dried sludge from the dryer. The dryer evaporates and ejects moisture by hot air. A cogeneration unit develops high temperature from heating source of the powder boiler. The drying fuel recycling facility spreads the powder fuel supplied by the apparatus for supplying proper quantity. A waste heat recovering system is connected with the powder boiler, a hot air recovery boiler and a hydrothermal recovery boiler. high temperature in the hot air and water boiler is generated by a combustion device by mixing the vortex and powder fuel. A condensation refrigerant tank is provided with a condenser. A liquid-phase refrigerant is cooled by the condenser and a coolant circulating pump. The coolant circulating pump is condensed in the condenser for supplying refrigerant air at low pressure to the evaporator. The cogeneration unit drops and changes the liquid refrigerant state at low pressure and low temperature using cold water or cold air in the refrigerant. The refrigerant passes the cold water or cold air to a turbine and generator to change the thermal energy into electric power by an evaporation apparatus. An induced draft fan ejects the exhaust gas having contaminant that is filtered out by a bag filter through a chimney. An exhaust gas processing facility controls the temperature of the exhaust gas and dust included in a semi-dry reaction top part. Air pollution material is passed through the semi-dry reaction top part and is filtered to remove the air pollutant including nitrogen oxide. A powder combustion device burns the powder fuel and processes the sludge using a dewetting top part to remove bad smell, moisture and dust through a particle separator. Malodorous vapor is passed through a particle separator that removes the particulate in air included in the generated malodorous vapor.