Abstract:

The treating phenol-containing pharmaceutical wastewater by using Fenton reagent has been studied. The optimal reaction conditions are determined as follows： the pH=3， dosage of FeSO4=1 200 mg/L， and 8 mL/L of 27.5% H₂O₂ solution， and stirring time=60 min， thus， the phenol removal rate is over 70%. Then， Fenton-hydrolytic acidification-contact oxidation process is used for treating phenol-containing pharmaceutical wastewater. When the phenol concentration is 1 151-1 933 mg/L， the phenol concentration of the effluent water after treated is less than 2.0 mg/L. The running results show that the treatment efficiency of this process is good， the effluent is steady， running cast is low， and its operation is simple and convenient.

Key words: pharmaceutical wastewater, Fenton, hydrolytic acidification, contact oxidation

摘要：

实验确定了用Fenton试剂处理含苯酚制药废水的最佳反应条件是pH=3,FeSO4粉末投加质量浓度为1200 mg/L,27.5%的H2O2投加量为8 mL/L,反应时间为60 min,在此条件下苯酚去除率达70%以上。采用Fenton-水解酸化-接触氧化工艺处理含苯酚制药废水,当进水苯酚质量浓度为1 151~1 933 mg/L时,处理后出水苯酚质量浓度<2.0 mg/L。实践运行表明,该工艺处理效果良好、出水稳定、运行成本低廉、操作简便。

关键词: 苯酚, 制药废水, Fenton, 水解酸化, 接触氧化

CLC Number: 

• X703.1