Power plant wastewater zero discharge treatment device

The utility model relates to the technical field of sewage treatment, in particular to a power plant wastewater zero-discharge treatment device, which improves the adding convenience of a water purifying agent, increases the matching stability, reduces the resource waste and improves the purification stability. Comprising a purification box, a drainage valve, a stirring motor, a stirring rod and a control switch, the bottom end of the stirring motor is installed at the top end of the purification box, and the top end of the stirring rod is installed in a cavity of the purification box; comprising an adding pipe, a first bearing, a water baffle, a driven gear, a mounting box, a supporting sliding rail, a supporting sliding groove, a straight rack, a piston cylinder, a piston sliding block, a compression spring, a transmission rod and an adding mechanism, the right end of the adding pipe communicates with a water inlet in the top of the left end of a purifying box, the piston cylinder is mounted on the right wa