Centralized treatment tank for electroplating wastewater containing cyanogen and nitrogen

The utility model relates to a centralized treatment tank for electroplating wastewater containing cyanogen and nitrogen, and relates to the technical field of wastewater treatment.The centralized treatment tank comprises a reaction tank body, a water inlet pipe and a water outlet pipe are connected to the reaction tank body, a feeding pipe for feeding a treating agent is arranged on the side face of the reaction tank body, and a stirring assembly is arranged on the side face of the reaction tank body; a protective cover covers an opening in the upper side of the reaction tank body, an exhaust pipe is arranged on the outer side surface of the protective cover, and an exhaust fan is mounted in the exhaust pipe; hydrogen cyanide gas generated by wastewater reaction is prevented from being dispersed to outside air through the protective cover; the exhaust fan in the exhaust pipe is started, trace hydrogen cyanide gas generated in the reaction process is exhausted through the exhaust pipe and discharged into the