作　　者： (靳晓鹏）; (丁磊）; (王丹丹）; (高阳）;

机构地区： 安徽工业大学建筑工程学院,安徽马鞍山243000

出　　处： 《过程工程学报》 2017年第4期716-724,共9页

摘　　要： 水源水中加入六价铬模拟水源突发性六价铬污染,采用单因素和响应曲面法建立了二次多项式回归模型,研究了磁性离子交换(MIEX)树脂去除水源突发性六价铬污染的可行性,对工艺参数进行了优化.结果表明,MIEX树脂可快速去除六价铬,约40 min时达吸附平衡;六价铬去除率随树脂用量增加而增加,随铬浓度增加而降低,pH为4时达最大值;回归模型可有效预测六价铬在MIEX树脂上的吸附.树脂用量与六价铬初始浓度、树脂用量与溶液pH、六价铬初始浓度与溶液pH间的交互作用对六价铬的去除有显著影响.最优参数下MIEX树脂对六价铬的去除率为99.99%. Hexavalent chromium was added into raw water to simulate emergent chromium pollution of water source. The reasonable quadratic polynomial model was established and the feasibility of using magnetic ion exchange （MIEX） resin to remove Cr（VI） was investigated by independent variables and response surface tests. The process parameters were also optimized. The results showed that M1EX resin quickly removed Cr（VI）, and the adsorption got equilibrium within 40 min. The removal rate of Cr（VI） increased with increasing of resin dosage and the reducing of Cr（VI） concentration, and reached the maximum at pH 4. The reasonable quadratic polynomial model was established to predict Cr（VI） removal accurately. The interactions of resin dosage and Cr（VI） concentration, resin dosage and pH, Cr（VI） concentration and pH, had significant effects on Cr（VI） removal. The optimal process parameters for Cr（VI） removal onto MIEX resin were obtained, and the maximal removal rate of Cr（VI） was 99.99%.

关 键 词： 磁性离子交换树脂 六价铬 突发性水源污染 吸附 响应曲面法