The sludge thickening system is  consists of sludge cutter, sludge feed pump, electromagnetic flow meter, electric valve, manual valve, pipes, concentration meter in the quenching and tempering pool, ultrasonic level meter, turbidimeter at the outlet of separation medium, and other partsThe key equipment for sludge thickening and dewatering is the main unit of sludge dewatering, namely the horizontal decanter centrifuge (the decanter centrifuge for short), which is the equipment for suspension separation by the use of centrifugal sedimentation principle.