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采用活性污泥法/水解酸化/MBR工艺处理制药废水,分析了铁炭微电解强化预处理水量权重小、有机污染物含量高、生物毒性强的工段废水后,组合工艺对混合废水的处理效果。结果表明:制药废水具有较强的生物毒性,可通过好氧处理方法进行削减,两级好氧工艺可有效去除具有生物毒性废水中的氨氮;铁炭微电解可大幅降低有机污染物浓度并削减生物毒性,提高后续生物处理工艺对COD、NH4+-N的去除效果,试验原水的COD、NH4+-N、总氮分别为(6 000～8 000)、(50～100)、(100～200)mg/L,经铁炭微电解强化预处理工段废水后,组合工艺出水COD、NH4+-N、总氮分别降至500、5、60 mg/L以下,达到排入污水处理厂的要求。
The treatment of mixed wastewater with activated sludge process / hydrolytic acidification / MBR process was applied to the treatment of pharmaceutical wastewater. The effect of combined process on the treatment of mixed wastewater was analyzed after the waste water with small weight of wastewater, high content of organic pollutants and strong biological toxicity . The results showed that: the pharmaceutical wastewater has strong biological toxicity and can be reduced by the aerobic treatment method. The two-stage aerobic process can effectively remove the ammonia nitrogen in the biologically toxic wastewater; the ferric-carbon micro-electrolysis can greatly reduce the concentration of organic pollutants and reduce (6 000 ~ 8 000), (50 ~ 100), (100 ~ 200), and total nitrogen of COD, NH4 + -N, and TN in the raw water after the biological treatment was increased, mg / L. After the pretreatment wastewater is enhanced by the iron-carbon micro-electrolysis, the effluent COD, NH4 + -N, and total nitrogen in the combined process are reduced to below 500, 5 and 60 mg / L, respectively, which meets the requirements of sewage treatment plants.