Abstract: The combined process,Fe/C micro-electrolysis-Fenton oxidation-coagulation precipitation-hydrolysis acidification-A/O-biological aerated filter,has been used for treating the wastewater from folic acid intermediates production in a fine chemical plant,Jiangxi. The operation results show that by the Fe/C micro-electrolysis process the removing rate of COD is 41% and the removing rate of NH₃-N 24%,respectively; and the removing rates of COD and NH₃-N by Fenton oxidation-coagulation process are 53% and 48%,respectively. After the pretreated wastewater has passed the advanced treatment by hydrolysis acidification-A/O-biological aerated filter process,the effluent is stable,COD﹤500 mg/L, and NH₃-N less than 35 mg/L,meeting the requirements for the Wastewater Treatment Plant in Yichun Salt Base. The technological treatment costs are 3.87 RMB/m³. This process is characterized by the advantages of good treatment effect,high economic benefits and so on,having very good application value in the treatment of fine chemical industrial wastewater.

Key words: folic acid intermediates wastewater, Fe/C microelectrolysis, Fenton oxidation, hydrolysis acidification, A/O, biological aerated filter

摘要： 江西某精细化工厂采用铁碳微电解-Fenton氧化-混凝沉淀-水解酸化-A/O-曝气生物滤池联合工艺处理叶酸中间体生产废水。运行结果表明：铁碳微电解工序的COD去除率为41%，氨氮去除率为24%；Fenton-混凝工序的COD去除率为53%，氨氮去除率为48%；预处理废水再经过水解酸化-A/O-曝气生物滤池深度处理，出水稳定，COD﹤500 mg/L，氨氮﹤35 mg/L，达到宜春盐化基地污水处理厂的要求。工艺处理成本为3.87元/m³。该工艺具有处理效果好、经济效益高等特点，在精细化工废水的处理中具有很好的应用价值。

关键词: 叶酸中间体废水, 铁碳微电解, Fenton氧化, 水解酸化, A/O, 曝气生物滤池

CLC Number: 

• X703.1