固定化白腐真菌处理染料废水的研究

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

染料废水具有COD高、色度高、盐度高和BOD/COD比值低等特点,属于难生化降解的有机工业废水.白腐真菌对可生化性差、有毒有害的废水有较好的降解作用.利用固定化微生物技术可构成一种高效、快速、能连续处理的废水处理系统,减少二次污染.实验采用固定化白腐真菌处理染料废水,分别考察了不同生物球的投加量、染料废水浓度、pH、转速对染料脱色率的影响.结果表明:固定化白腐真菌对染料废水分别在生物球投加量为5.5g/100mL、染料废水浓度为20mg/L、pH为3、转速为120r/min条件下具有最好的脱色率.

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.