用NaClO_(3)氧化-针铁矿法从氯化体系中去除铁试验研究

Removal of Ferrous Iron from Chlorination System by NaClO_(3)Oxidation-Goethite Method

研究了以NaClO_(3)为氧化剂,采用针铁矿氧化还原法从氯化体系中去除Fe^(2+),考察了溶液pH、NaClO_(3)溶液加入量、反应时间和反应温度对铁去除率的影响。结果表明:在加入针铁矿晶种、溶液pH=2.5、NaClO_(3)溶液加入量20 g/L、反应时间4 h、反应温度85℃条件下,铁去除率可达99.96%,去除效果较好。

The removal of Fe^(2+)from chlorination system by goethite method with NaClO_(3)as oxidant was studied.The effects of solution pH,dosage of NaClO_(3)solution,reaction time and reaction temperature on removal rate of Fe^(2+)were examined.The results show that under the conditions of adding goeite seed,solution pH=2.5,dosage of NaClO_(3)solution of 20 g/L,reaction time of 4 h and reaction temperature of 85℃,the removal rate of Fe^(2+)is 99.96%.The romoval effect is good.