Emission reduction method for rinsing water of continuous chromium electroplating unit

The invention discloses an emission reduction method for rinsing water of a continuous chromium electroplating unit. The method includes the steps of: subjecting the rinsing water of the continuous chromium electroplating unit's metal chromium rinsing section and the rinsing water of a chromium oxide rinsing section to filtration concentration respectively by a first ceramic filter and a second ceramic filter so as to obtain a purified solution and a chromic anhydride concentrated solution; and applying the purified solution to re-rinsing, and inputting the chromic anhydride concentrated solution into a chromium oxide plating tank of the continuous chromium electroplating unit's chromium oxide plating section to serve as the chromium oxide plating material. The emission reduction method for the rinsing water of the continuous chromium electroplating unit can reduce the emission of chromium-containing wastewater, reduce the treatment cost of chromium-containing wastewater and enhance the utilization rate of chromium-plating solution, thereby realizing the purposes of economical emission reduction and efficient use of resources.