氯胺投加量及氯氮比对生成卤乙腈的影响  

Effect of Chloramine Dosing and Cl/N Ratio on the Formation of Haloacetonitrile

作　　者：刘雨涵 员建 许明媚[1,2] 苑宏英 高富 LIU Yuhan;YUAN Jian;XU Mingmei;YUAN Hongying;GAO Fu(School of Environmental and Municipal Engineering,Tianjin Chengjian University;Tianjin Key Laboratory of Water Quality Science and Technology,Tianjin 300384,China)

机构地区：[1]天津城建大学环境与市政工程学院 [2]天津市水质科学与技术重点实验室,天津300384

出　　处：《水处理技术》2023年第10期47-51,共5页Technology of Water Treatment

基　　金：国家重点研发计划“政府间国际科技创新合作”重点专项(2019YFE0122400)。

摘　　要：以两种原水中常见的含氮有机物酪氨酸和绿麦隆为前体物,研究了氯胺消毒时,氯胺投加量及氯氮比(Cl/N)的变化对消毒副产物卤乙腈(HANs)生成量的影响。结论表明:采用氯胺消毒时,HANs及其各组分含量随氯胺投加量的增大出现先增后减的变化趋势,当氯胺浓度为10 mg/L时HANs总量最大。在中性条件下,控制氯氮比(Cl/N)为4/1时HANs总量最大。结合不同条件下HANs的生成情况,应控制氯氮比在3/1~3.5/1内,以提高消毒效果。In this paper,we investigated the effect of chloramine dosing and the variation of chlorine to nitrogen ratio(Cl/N)on the production of haloacetonitrile(HANs)as disinfection by-products using two common nitrogen-containing organisms in raw water,tyrosine and chloromalon,as precursors.It was concluded that the content of HANs and their components increased and then decreased with the increase of chloramine dosage,and the total amount of HANs was maximum when the chloramine concentration was 10 mg/L.Under neutral conditions,the total amount of HANs was maximized when the control chlorine to nitrogen ratio(Cl/N)was 4/1.Combined with the generation of HANs under different conditions,the chlorineto-nitrogenratio should be controlled within 3/1~3.5/1 to improve the disinfection effect.

关 键 词：氯胺消毒 消毒副产物 卤乙腈 氯胺投加量 氯氮比 

分 类 号：TU991.25[建筑科学—市政工程]