Sludge treatment process

The invention provides a sludge treatment process. The sludge treatment process comprises the following steps of: pumping sludge in a sludge concentration tank into a sludge conditioning tank for stirring and conditioning to obtain pretreated sludge; pumping the pretreated sludge into a membrane filter press, and extruding and dehydrating the sludge to obtain a sludge cake; conveying the mud caketo low-temperature drying equipment for drying treatment; enabling the filter cake to enter a gasification melting furnace to be gasified and molten to obtain molten slag and first pretreated flue gas, discharging the molten slag after water quenching, and purifying the first pretreated flue gas through a cyclone dust collector and then cooling the first pretreated flue gas through an air preheater and a waste heat boiler; enabling the cooled first pretreated flue gas to enter a gas mixer, and adding ozone into the gas mixer for a mixed oxidation reaction to obtain second pretreated flue gas;feeding the second pretrea