UV/Fenton处理苯酚废水的研究

Treatment of phenol-containing wastewater by UV-Fenton process

采用UV/Fenton联合体系降解苯酚模拟废水,苯酚的初始质量浓度为300 mg/L,CODCr的初始质量浓度为760 mg/L。探讨了pH值、H2O2(30%)和FeSO4.7H2O投加量、反应时间等因素对苯酚和CODCr去除率的影响。结果表明,UV/Fenton联合体系降解苯酚废水的最佳工艺条件是:溶液pH值为3、H2O2投加量为2.5 mL/L、FeSO4.7H2O投加量为0.020 g/L、反应时间为90 min。此时,苯酚的去除率为95%,CODCr的去除率为90%。UV/Fenton联合体系能较好地处理苯酚废水。

UV-Fenton process was used to treat simulant phenol-containing wastewater, the initial mass concentrations of phenol and CODc4 were 300 and 760 mg/L respectively. The effects of pH value, dosage of H202（30%） and FeSO4 7H20, reaction time and some other factors on the removal rates of phenol and CODcr were discussed. The results showed that, the optimal condition for UV-Fenton process treating phenol-containing wastewater was as follows： the solution pH value was 3, the dosage of H202 and FeSO4-7H20 were 2.5 mL/L and 0.020 g/L respectively, the reaction time was 90 min. Under the above condition, the removal rates of phenol and CODcr reached 95% and 90% respectively. It could be seen that, UV-Fenton process was effective for the treatment of phenol-containing wastewater.