Dye wastewater treatment by white rot fungus bio-contact oxidation process

White rot fungus bio -contact oxidation process was used to treat simulant dye wastewater of reactive light yellow K-6G, the effect of it on the decolorization and COD degradation was investigated. The results showed that, the said process had good effect on COD removal, when the chroma of the influent water was about 2 000 times, the removal rate of COD reached 98%; for the dye wastewater which had been pretreated by Fenton process, the average removal rate of COD was 62% when its mass concentration in influent water was 132 - 305 mg / L. Thus it can be seen that, combining white rot fungus with biofilm reactor can effectively remove the chroma from hard-degradable azo-dye wastewater and also has certain effect on COD removal.