Municipal sludge deep-dewatering system

The utility model relates to a municipal sludge deep-dewatering system. The system comprises a conditioning and modifying tank, preliminary dewatering equipment, deep dewatering equipment, sludge cake delivery equipment and treating equipment. Conditioned and modified municipal sludge is dewatered preliminarily, and the moisture content of the preliminarily dewatered sludge is reduced to be in a range of 70-85%; the preliminarily dewatered sludge directly enters electroosmotic dewatering equipment for deep dewatering, and the moisture content of the sludge is reduced to be in a range of 40-60%; the dewatered sludge can be directly subjected to landfill disposal or incineration treatment, prepared into building materials, or pyrolyzed, gasified and the like and recycled. Compared with an original sludge dewatering technology of a sewage plant, the technology has the advantage that original sludge dewatering equipment of the sewage treatment plant is kept, and the electroosmotic deep-dewatering equipment is added, so that the sludge dewatering effect is greatly improved; continuous sludge dewatering can be realized with the technology, so that the treating efficiency is high; the technology is applicable to a newly built sewage treatment plant and meets design requirements of transformation, extension and emergency plans for sludge dewatering treatment of the existing sewage treatment plant.