Screening of Dye-decolorizing Microbe and Conditions of Dye Decolorization
14 bacteria strains which were isolated through enrichment and culture from wastewater of a dyeing workshop in Nanchang had different dye-decolorization ability on directly red dye.There were 12 strains with decolorization rate above 50%,accounting for 85.7%of total number.Above 70%were 8 strains whose ratio was 57.1%and above 80%were 4 strains which were 28.6%of total number.The decolorization capability of strain Z03 was 84.2%,which was the strongest.Decolorization conditions of the strain Z03 were studied,with decolorization rate up to 89.6%under the optimum dye decolorization conditions obtained by orthogonal experiment which were 35℃,pH 7 and 40mL/250mL.