Screening of efficient degrading strains and its application in paper-making wastewater

To improve the biological treatment effect of paper-making wastewater, the screening of strains degrading wastewater and its application were carried out. Twelve strains were separated from biological aerated filter; two efficient degrading strains (D 1 , E 2 ) were screened based on the degradation rate of COD cr . The D 1 , E 2 were selected to apply in wastewater treatment experiment and the results showed that the removal rate of COD cr were 78.4%, 59.1% respectively, they displayed good prospects in paper-making wastewater treatment.