作　　者： ; ; ;

机构地区： 华南理工大学环境科学与工程学院

出　　处： 《安徽农业科学》 2009年第27期12898-12899,12914,共3页

摘　　要： [目的]为研究加氯消毒过程中细菌物质生成卤代乙腈的情况。[方法]对水体中常见的5种细菌,按照UFC方法,测定了其生成N-DBPs和HANs的量,同时考察了溴离子对细菌加氯形成HANs的影响。[结果]细菌B1的单位耗氯量最大(1.96 mg Cl2/mg C),B5最低(0.45 mg Cl2/mg C);5种细菌加氯处理后有微量的TCAN生成,生成的DCAN随细菌TOC浓度呈近似线性关系;氯代HANs生成量占总HANs比例减少,溴代HANs随溴离子浓度的增加而在一定程度上增加。[结论]5种细菌均能生成HANs,以DCAN为主;溴离子对细菌物质生成HANs的影响较大。 [ Objective ] The study aimed to research the haloaeetonitriles formation by cellular material during chlorination disinfection process. [ Method] 5 bacterial cultures which are common in water were chlorinated according to the UFC methods to determine the HANs formation, and the effect of Br- was investigated. [ Result] The specific chlorine demand of B1 was the maximum （ 1.96 mgC1Jmg C）, while that of B5 was minimum （0.45 mgCl2/mg C）. There were few TCAN formation of these 5 bacteria, and their DCAN formation showed an approximately linear relationship with the TOC concentration. The ratio of chloro-substituted HANs to total HANs declined, while Br-HANs were increased to some extent with the concentration of Br-. [ Conclusion] HANs were formed during the chlorination of 5 bacterial cultures, and DCAN was dominant species; Br- has a significant effect of HANs formation.

关 键 词： 细菌 消毒副产物 卤代乙腈 溴离子

领　　域： [环境科学与工程]