Fe/Cu催化还原降解饮用水中二氯乙腈的研究  

Research of Dichloroacetonitrile Degradation in Drinking Water by Fe/Cu Catalytic Reduction

作　　者：丁春生[1] 朱荣辉 肖毛虎 王苗新 毛莎 DING Chunsheng;ZHU Ronghui;XIAO Maohu;WANG Miaoxin;MAO Sha(College of Architecture and Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310023

出　　处：《水处理技术》2020年第12期78-82,共5页Technology of Water Treatment

基　　金：浙江省自然科学基金资助项目(Y5110339)。

摘　　要：为了降解饮用水中二氯乙腈(DCAN),采用Fe/Cu催化还原的方法去除水中的DCAN。考察了Fe与Cu质量比,Fe/Cu投加量,温度和初始DCAN含量对DCAN去除效果的影响。结果表明,Fe/Cu混合物去除DCAN的效果比单纯的零价铁好,Fe、Cu质量比为20:1的去除率是零价铁的1.6倍。DCAN的去除率随着Fe/Cu投加量的增加而增加,当溶液初始DCAN的浓度为40μg/L,Fe、Cu质量比为10时,投加量由2gL增加到14 g/L,反应180 min后,去除率由72.3%增加到90.6%。DCAN的降解效率随着温度的升高逐渐提高,DCAN去除率随着初始DCAN含量的增加而增大,Fe/Cu降解DCAN符合一级反应动力学规律。In order to degrade the dichloroacetonitrile(DCAN) in drinking water, the Fe/Cu catalytic reduction method was used to remove DCAN in water. The effects of Fe/Cu mass ratio, Fe/Cu dosage, temperature and initial DCAN content on DCAN removal efficiency were investigated. The results indicated that Fe/Cu mixture removed DCAN better than pure zero-valent iron, and the removal efficiency of the Fe/Cu(mass ratio of 20:1) was 1.6 times that of zero-valent iron. The removal rate of DCAN increased with the increase of Fe/Cu dosage, when the initial concentration of DCAN solution was 40 μg/L, the mass ratio of Fe/Cu was 10, after a reaction time of 180 min, the removal rate of DCAN was improved from 72.3% to 90.6% with the Fe/Cu(mass ratio of 10:1) dosage from 2 g/L to 14 g/L. The degradation efficiency of DCAN increased with the increase of temperature, the removal rate of DCAN increased as the initial content of DCAN increased. The degradation of DCAN by Fe/Cu catalytic reduction followed the first-order reaction kinetics.

关 键 词：消毒副产物 DCAN Fe/Cu催化还原 动力学 

分 类 号：TU991.2[建筑科学—市政工程]