给水管网水中氯胺消毒的氨氮释放规律  

Release Rule of Ammonia Nitrogen from Chloramine Disinfection in Water Supply Distribution System

作　　者：胡领文[1] 周玲玲[2] 张永吉[1] 邓慧萍[1] 

机构地区：[1]同济大学长江水环境教育部重点实验室,上海200092 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《净水技术》2014年第1期72-75,96,共5页Water Purification Technology

基　　金：国家自然科学基金资助项目(51178323;51108329);水体污染控制与治理科技重大专项(2012ZX07408001)

摘　　要：研究了对不同氯氨比条件下氯胺释放氨氮的规律,考察了pH、有机物浓度、亚硝酸盐浓度和Fe2+对氯胺释放氨氮规律的影响。结果表明随着氯氨比的增加氨氮释放量降低,Cl∶N=3∶1和Cl∶N=5∶1的氯胺释放氨氮的量分别为0.91和0.35 mg/L;pH对氯胺释放氨氮有一定影响,氨氮浓度随着pH升高而降低;有机物含量和亚硝酸盐浓度对氯胺释放氨氮有显著影响,随着有机物和亚硝酸盐含量的增加,氯胺释放的氨氮浓度增加;管网中的Fe2+也会加快氯胺释放氨氮的速度。The release rule of ammonia nitrogen from chloramine at different chlorine-to-nitrogen ratio was studied. pH,concentration of organic matter,concentration of nitrite and Fe2＋ on release of ammonia nitrogen from chloramine was investigated. The results show that the higher Cl∶N is,the less ammonia nitrogen is released;when Cl∶N is 3∶1,the concentration of ammonia nitrogen released from chloramineis 0. 91 mg/L,when Cl∶N is 5∶1,that is 0. 35 mg/L. to some extent,pH has an impact on the release of ammonia nitrogen from chloramine,the concentration of ammonia nitrogen decreases with pH increasing;organic matter and nitrite has positive effects on the release,the higher the concentration of organic matter and nitrite is,the higher ammonia is released. Fe2＋ also can enhance the release.

关 键 词：氯胺 消毒 硝化作用 氨氮 释放 

分 类 号：TU991[建筑科学—市政工程]