中文摘要：

试验考查了水中次溴酸的自分解及与天然有机物反应的消耗速率。结果表明去离子水中次溴酸分解的二级反应速率常数kdisp为14.8-62.7 mol-1.L.h-1。富里酸和腐植酸对次溴酸的消耗均可用二级反应速率方程拟合,富里酸的消耗速度更快,慢反应阶段二级速率反应常数约为2.47×103 mol-1.L.h-1。黄浦江原水中次溴酸与次氯酸的初期耗量和后期分解速度无明显差异。通过次溴酸分解速率常数估算原水有机物含量相当于4.57 mg/L CODMn,和原水测定值相近。铜氧化物和铜离子比铁氧化物和铁离子更能够促进次溴酸的分解。

英文摘要：

The disproportionation of hypobromous acid and its reaction rate with natural organic matters（NOM） were explored in this study.The results show the second-order rate constants of hypobromous acid decomposition is 14.8-62.7 mol-1·L·h-1.Reaction of fulvic acid and humic acid with hypobromous acid can be described by a second-order rate reaction equation.The reaction rate of fulvic acid with hypobromous acid is about 2.47×103 mol-1·L·h-1,which is higher than that of humic acid.The decomposition rate of hypobromous acid and hypochlorous acid are similar in Huangpu river raw water.The evaluated CODMn of raw water is 4.57 mg/L through the decomposition rate of hypobromous acid,which is close to the determined results.Copper oxide and copper ion lead to a faster decomposition of hypobromous acid than iron oxide and iron ion.