Cyanogen-containing waste water treatment device

The utility model relates to a waste water treatment device, in particular to a cyanogen-containing waste water treatment device. The output end of a regulating tank is connected with a primary cyanogen breaking reaction barrel; the output end of the primary cyanogen breaking reaction barrel is connected with a secondary cyanogen breaking reaction barrel; the output end of the secondary cyanogen breaking reaction barrel is connected with a flocculation barrel; the output end of the flocculation barrel is connected with a heavy metal recycling and settling barrel; the output end of the heavy metal recycling and settling barrel is connected with an alkali chloridization cyanogen removing barrel; the output end of the alkali chloridization cyanogen removing barrel is connected with a waste gas recycling barrel. According to the structure, the cyanogen-containing waste water is firstly subjected to treatment, so that copper and heavy metal ions are precipitated for recycling; the cyanogen-containing waste water i