天然有机物对黄浦江原水中次溴酸稳定性的影响  

Effect of Natural Organic Matters on Stability of Hypobromous Acid in Huangpu River Raw Water

作　　者：卢宁 段湘林[2] 黄鑫[3] 梅红[3] 章涵辰[3] 

机构地区：[1]上海城市水资源开发利用国家工程中心有限公司,上海200082 [2]宝钢工程技术集团有限公司,上海201900 [3]上海大学环境与化学工程学院,上海200444

出　　处：《净水技术》2012年第2期19-23,共5页Water Purification Technology

基　　金：国家科技重大专项资助(2008ZX07421-001);国家自然科学基金(50908138);上海市建设和交通委员会重大科研项目(重科2008-005)

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。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.

关 键 词：次溴酸 天然有机物 二级速率反应 黄浦江原水 

分 类 号：TU991[建筑科学—市政工程]