The invention discloses a filter press system with a dewatering wheel system. The filter press system comprises one belt filter press, one box filter, one pressure filter, one squeezing filter, one sterilization device, one sedimentation tank, one waste liquid pool, one liquid collection pool, four slag storage tanks, three buffer tanks, six feeding pumps, five circuit switches and fifteen valves.The belt filter press comprises a frame, a gravity separation zone, a squeezing separation zone and a liquid guide device. The squeezing separation zone comprises a second driving motor, a third driving motor, a pre-pressing device, an upper pressure filtering belt, a lower pressure filtering belt, a tensioning roller, a discharge roller, a dewatering roller system, a carrier roller, a second deviation adjustment device and a third deviation adjustment device. The dewatering roller system comprises five dewatering rollers respectively arranged in the upper pressure filtering belt and the lower pressure filtering belt.