Coking wastewater is a typical toxic refractory organic wastewater. Coking wastewater mainly comes from coke oven gas primary cooling and coking process production water and steam condensing wastewater. Due to the high concentration of pollutants in coking wastewater, it is difficult to degrade. Due to the existence of nitrogen in coking wastewater, the nitrogen source required for biological purification is excessive, which brings great trouble to the standard of treatment. Suzhou bojie provides resin for coking wastewater treatment, which can effectively remove the organic matter, phenol, ammonia nitrogen and so on in the wastewater, and make the wastewater meet the discharge standard.