Electroplating wastewater treatment device

The utility model relates to a sewage treatment device, in particular to an electroplating wastewater treatment device. The electroplating wastewater treatment device comprises a cyanogen reaction tank set, a nickel reaction tank set, a chrome reaction tank set, a pretreatment reaction tank set, a comprehensive reaction tank set, a mixed discharging reaction tank set, a chrome reduction reaction tank, a middle return tank, a flocculation tank, a settling tank, an effluent guarantee tank and a biochemical settling tank. According to the structure, electroplating wastewater is divided into six types, then treated in the cyanogen reaction tank set, the nickel reaction tank set, the chrome reaction tank set, the pretreatment reaction tank set, the comprehensive reaction tank set and the mixed discharging reaction tank set respectively, gathered, and treated with chrome reduction, settles, and is treated biochemically, and the PH value is adjusted finally, so that comprehensive treatment of electroplating wastewat