Device for treating electroplating wastewater by utilizing rust to implement metal recovery and using method thereof

The invention relates to a device for treating electroplating wastewater by using rust to implement metal recovery and a using method thereof. The device comprises a precipitation unit, a treatment unit and a metal recovery unit. Electroplating wastewater is supplied into the treatment unit through the precipitation unit and is subjected to impurity removal through the filtering assembly and is sequentially conveyed to the pH adjusting area, the rust reaction area and the complex breaking area to be subjected to related reaction, and a solution containing free radicals in the free radical areais conveyed to the complex breaking area. A solution obtained after complex breaking reaction is sent to a reduction reaction and metal precipitation area of the metal recovery unit, and metal precipitates generated through reaction are recovered. According to the scheme, use is easy, various metal ions can be efficiently recycled, environmental pollution can be reduced, the treatment cost of electroplating wastewater an