催化氧化-芬顿工艺处理表面活性剂生产废水中试研究

The pilot test on the treatment of surfactants production wastewater by catalytic oxidation-Fenton process

针对重烷基苯磺酸盐(HABS)生产废水高pH、高COD、高亚硫酸盐的特点,应用催化氧化-芬顿联合处理工艺进行现场中试实验及参数确定.中试规模为5 t/d,通过优化参数得到催化氧化最优条件为pH=8,曝气量为50 m3·h-1,停留时间为90 min;芬顿氧化段最优条件为30%双氧水投加量1.00 mL/L.采用上述工艺运行方案处理HABS生产废水,出水水质满足GB8978—1996中的I级排放标准,是一种经济可行的工艺.

According to the characters of HABS industrial wastewater of high pH,high COD and high concentration of sulfite,a pilot reactor with catalytic oxidation-Fenton combined treatment process was built,and the pilot scale experiments were employed to discuss the optional parameters. A pilot scale is 5 t /d. After optimized,the optimal optional parameters in catalytic oxidation stage were pH 8,aeration rate 50 m3/h,HRT 90 min. The optimal optional parameters in Fenton stage were dosage of H2O2（ 30%） 1.00 mL/L. The effluent quality can meet the first class requirements of Sewage Discharge Standard in GB8978—1996,which suggests the process is economical and feasible.