Fenton试剂氧化处理模拟含聚丙烯酰胺污水的研究

Study on Treating Wastewater Contained Polyacrylamide by Fenton's Reagent Oxidation Processing

主要研究了利用Fenton试剂氧化法处理模拟含部分水解聚丙烯酰胺的污水,考察了H2O2浓度、Fe2+浓度、温度、反应时间、pH值等因素对Fenton试剂氧化降解模拟含部分水解聚丙烯酰胺污水的影响。结果表明:H2O2浓度为5.3mmol.L-1、Fe2+浓度为1.44mmol.L-1、温度30℃、反应时间15min、pH值范围3～4时,聚丙烯酰胺的氧化降解效果最好,且在最佳条件下,聚丙烯酰胺和CODCr的去除率分别达到87.61%和82.60%。通过对Fenton氧化降解前后的聚丙烯酰胺样品的红外谱图对比,可以推断出Fenton试剂将侧链的酰胺基氧化成羧基。

The treatment of simulation wastewater containing partially hydrolyzed polyacrylamide （HPAM） by Fenton＇ s reagent （a mixture of H202 and Fe2＋ ） oxidation processes was carried out in a batch reactor. The effect of operating conditions such as the concentration of H2O2, the concentration of Fe2＋ , temperature, reaction time and pH value on the efficiency of Fenton oxidation processes had been optimized. It was demonstrated that Fenton＇ s reagent can effectively oxidate simulation HPAM wastewater. The results showed that the removal rate of HPAM and CODc, were 87.61% and 82.60%, respectively, under the optimum conditions of H2O2 5.3mmol/L, Fe2＋ 1.44mmol/L, temperature 30℃, reaction time 15min, pH value from 3 to 4. The FTIR spectrum indicated that the amide group of HPAM was oxidized into carboxyl group.