氧化法处理苯胺类污染物的试验研究

Experimental Research on the Removal of Anilines by Oxidation Method

以苯胺类化合物去除率为指标,采用HPLC技术研究了二氧化氯氧化去除水中苯胺、对甲苯胺和对氯苯胺等三种污染物的效果,探讨了二氧化氯投量、反应pH值及反应时间对评价指标的影响。结果表明,对于1 mmol/L的苯胺、对甲苯胺和对氯苯胺,ClO2的最佳投量均为5 mmol/L,适宜pH值分别为88、~9和7~8,适宜的反应时间分别为60 min、30 min和20 min。苯胺类化合物的去除率均超过了90%。这说明二氧化氯氧化法去除水中苯胺类化合物是可行的。

Oxidative behaviors of three toxic pollutants including aniline,p-toludine and p-chloroaniline with chlorine dioxide in water were studied with HPLC.The removing efficiency of anilines were used as criteria in this experiment.Effect of the chlorine dioxide dosage,pH and duration of reaction on the re-moving efficiency of anilines were discussed.The results showed that for 1mmol/L aniline,p-toludine and p-chloroaniline,the optimal process conditions were as follows： chlorine dioxide dosage 5mmol/L,pH value is 8 for aniline,pH value is 8-9 for p-toludine and pH value is 7-8 for p-chloroaniline,reaction duration were 60,30 and 20min respectively.The removing efficiency of anilines were more than 90%,revealing that the oxidative methods of chlorine dioxide was very feasible and efficient for anilines removal.