采用臭氧-曝气生物滤池(BAF)组合工艺对中石化九江分公司二级生化出水进行深度处理中试实验。探讨了臭氧投加量、进水水质冲击负荷等因素对该组合工艺出水COD、NH+4-N的影响。中试结果表明,在该水质条件下,臭氧最佳投加量为20~25 mg/L;组合工艺处理后出水COD低于40 mg/L,NH+4-N低于5 mg/L,达到中水回用设计标准;该组合工艺能够经受一定冲击负荷。 The pilot experiment of secondary treatment of biochemical effluent of Sinopec Jiujiang Branch was carried out by the combined process of ozone and biological aerated filter (BAF). The effects of ozone dosage, impact load of influent water and other factors on COD and NH + 4-N effluent from the combined process were discussed. The results of pilot-scale test showed that the best dosage of ozone was 20-25 mg / L, the effluent COD was below 40 mg / L, NH + 4-N was less than 5 mg / L, Reuse water reuse design standards; the combined process can withstand a certain impact load.