Sludge dewatering system

The utility model relates to a sludge dewatering system which comprises a belt type dewatering machine, the belt type dewatering machine comprises a rack, a feeding section is arranged at the top end of one side of the rack, a stirring mechanism is arranged on the side, close to the feeding section, of the belt type dewatering machine, and the stirring mechanism is used for mixing slurry and a flocculating agent; the stirring mechanism comprises a hollow stirring box body, an overflow port is formed in the side, close to the feeding port, of the top of the stirring box body, and the overflow port is connected with the feeding section; the feeding section comprises an inclined conveying plate connected with the machine frame, and a feeding port is formed in the upper end of the inclined conveying plate. According to the utility model, the stirring mechanism is additionally arranged in front of the feeding section of the belt type dehydrator, so that slurry can be effectively ensured to be uniformly mixed with