Study on the treatment of dye wastewater by immobilized white-rot fungus

Dye wastewater is difficult to biodegrade which belongs to organic industrial wastewater with high COD,high chromaticity,high salinity and low BOD/COD ratio etc.The white-rot fungus has quite good degradation on poor biodegradability,toxic and hazardous wastewater.Using the immobilized microorganism technology can constitute a highly efficient,rapid and continuous processing of wastewater treatment system and reduce the secondary pollution effectively.The dye wastewater was treated by immobilized white-rot fungus;and the influence of the different mass of biological balls,concentration of dye wastewater,the values of pH,rotational speed on the decolorization rates was examined.The results show that:when the mass of biological balls is 5.5g/100 mL,the concentration of dye wastewater is 20mg/L,pH is 3,the rotational speed is 120r/min,the decolorization rate of dye wastewater reach the best respectively.