Study on Effective Microorganisms Bacteria for Acrylonitrile Wastewater Treatment

In this study, according to the specific characteristics of acrylonitrile wastewater, Effective Microorganisms (EM) was used as Contact oxidation strain. The optimum conditions of EM bacteria domestication and contact oxidation treatment, such as pH, concentration and temperature, was confirmed. In addition, the results of aerobic treatment of wastewater suggested that COD effluent reduced to below 100mg/L, the removal efficiency to 99.4% and the chromaticity reduced from 300 times to less than 20 times. And the final effluent quality can be satisfied with the first-class discharge standard stipulated in the State Integrated Sewage Discharge Standard (GB 8978-199).