Cyanide-containing wastewater treatment device

The utility model discloses a cyanogen-containing wastewater treatment device which comprises a wastewater tank and a sodium hypochlorite tank, a mixing tank is arranged between the wastewater tank and the sodium hypochlorite tank, a sodium hypochlorite pump is arranged between the sodium hypochlorite tank and the mixing tank, a cyanogen-containing wastewater pump is arranged between the wastewater tank and the mixing tank, and a maintaining tank is arranged on the front side of the mixing tank. And a cyanide ion detection device is arranged on one side of the maintaining tank. According to the utility model, the wastewater tank, the sodium hypochlorite tank, the mixing tank and the maintaining tank are arranged together, so that facilities are distributed more intensively, the occupied area is small, the operation cost is reduced, the workload of maintenance and repair is reduced, and the cyanide ion content in the wastewater can be monitored on line by arranging the cyanide ion detection device; and samplin