Energy-saving waste liquid heat exchange treatment device

The invention relates to an energy-saving waste liquid heat exchange treatment device. In the device, a heat exchange box is provided with a waste liquid inlet and a waste liquid outlet; flow baffle plates are fixed on side plates at both sides of the heat exchange box; each unit blade is arranged between two flow baffle plates, and a plurality of blades are arrayed on a rotating shaft in a spiral forward type; a motor is used for driving a speed reducer to rotate, and the speed reducer drives the rotating shaft to rotate; bearing blocks are fixed on the side plates at both ends of the heat exchange box, and the rotating shaft is arranged on the bearing blocks; a rotating joint is in through connection to the end part of the rotating shaft, and water outlet holes is molded on the rotating shaft and communicated with water inlet holes of the blades; a water inlet tap is welded on the rotating shaft, and two clamping pieces with the same structures are symmetrically welded on the water inlet tap; a partition pl