Coking wastewater treatment method

The present invention discloses a coking wastewater treatment method, which comprises: 1, carrying out a coagulation precipitation treatment on coking wastewater; and 2, carrying out an ultraviolet hydrogen peroxide oxidation treatment on the precipitation effluent to remove partial total cyanogen, partial chemical oxygen demand and ultraviolet-absorbing organic matters in the precipitation effluent, wherein the molar ratio of the hydrogen peroxide added in the step 2 to the total cyanogen is 50-250:1, the wavelength of the ultraviolet ray is 254 nm, and the power density of the ultraviolet ray is 1500 J/L*min. With the technical scheme of the present invention, the coking wastewater treatment can be easily performed, and the treated coking wastewater has the high standard.