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2 h，电流为2 A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).

魏朋(1991-),男,硕士研究生,研究方向为化工废水处理,m15062285175@163.com