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采用UV/H2O2/草酸铁作为氧化剂氧化降解水中的聚丙烯酰胺(PAM)。研究了H2O2投加量、反应时间、n(Fe3+):n(草酸)对PAM降解的影响。试验结果表明,在室温25℃,n(Fe3+):n(草酸)=1:3,H2O2浓度为15 mmol.L-1,pH=3的条件下,光照120 min后,质量浓度为400 mg.L-1的PAM的去除率达到88.3%,与其它光氧化体系相比,去除效果较为明显。
Oxidative degradation of polyacrylamide (PAM) in water using UV / H2O2 / iron oxalate as oxidant. The effects of H2O2 dosage, reaction time, n (Fe3 +): n (oxalic acid) on the degradation of PAM were studied. The results showed that under the conditions of n (Fe3 +): n (oxalic acid) = 1: 3, H2O2 concentration of 15 mmol.L-1 and pH = 3 at room temperature of 25 ℃ for 120 min, the mass concentration was 400 mg L-1 PAM removal rate of 88.3%, compared with other photo-oxidation system, the removal effect is more obvious.