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采用“蒸发-电催化-A/O”组合工艺处理高浓度扑热息痛制药废水,实验结果表明:蒸发脱盐阶段,pH影响不大,COD去除率达到80％以上,全盐去除率达到99％以上,色度由100倍降为10倍;电催化氧化阶段,pH为7,反应时间为2h,电流为2A时,COD去除率达到45％;生化处理阶段,当生化进水COD控制在2 000 mg/L左右时,生化体系对该废水的去除率为80％,其中缺氧阶段为30％,好氧阶段为70％;最后出水COD≤500 mg/L.满足《污水综合排放标准》(GB 8978-1996)三级排放标准的要求.“,”The high concentration wastewater from paracetamol production is treated by a combination process of evaporation-electrocatalysis-A/O biochemical treatment.The experiments show the following results:In the evaporative desalination stage,pH has small influence,the COD removal rate exceed 80％,the total salt removal rate is above 99％,and the chroma of wastewater decreases from 100 times to 10 times;In the electrocatalytic oxidation stage,the COD removal rate reaches 45％ when the pH is 7,the reaction time lasts for 2 h and the electric current is 2 A;In the biochemical treatment stage,when the COD of influent wastewater is controlled around 2 000 mg· L-1,the total COD removal rate in the biochemical system is 80％,of which the anoxic section contributes 30％ and the aerobic section occupies 70％.The COD content of final effluent is not more than 500 mg·L-1,which meets the requirements of the Grade Three discharge standard specified in the Integrated Wastewater Discharge Standard (GB 8978-1996).