Fenton氧化深度处理制药废水二级生化出水

采用Fenton氧化法处理抗生素类药品生产废水二级生化出水,考察了初始pH值、FeSO4·7H2O与H2O2投加量及投加方式、反应时间等因素对CODCr去除效果的影响。试验确定最佳操作条件为:初始pH值为4.0,一次性投加1.2 mL/L H2O2和1.0 g/L FeSO4·7H2O,两者的物质的量比约为3∶1,曝气反应2 h,最终CODCr的去除率可达56.8%;Fenton氧化可将废水m(BOD5)/m(CODCr)值由0.18提高至0.32,为后续生物处理提供了良好条件。

Advanced treatment of secondary biochemical effluent from pharmaceutical manufacturing using Fenton oxidation process

Using Fenton oxidation process to treat secondary biochemical effluent from antibiotic drugsmanufacturing, the influences of initial pH value, dosage and dosing methods of FeSO4·7H2O and H2O2, reactiontime and some other factors on CODcr removal were studied. According to the test results, the optimal operatingcondition was determined, which was： the initial pH value was 4.0, both 1.2 mL/L of H2O2 and 1.0 g/L of FeSO4·7H2O were added at once, the mole ratio of H2O2 to FeSO4·7H2O was about 3 ： 1, the aeration time was 2 h. Un-der the above condition, the removal rate of CODCr of the effluent water from Fenton oxidation process couldreach 56.8%, and the m（BODs）/m（CODcr） value was increased from 0.18 to 0.32, which was beneficial for the fol-lowing biological treatment.