次氯酸钠氧化降解碱性玫瑰精生产模拟废水研究

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英文篇名：Study on oxidation degradation of simulated Rhodamine B wastewater by sodium hypochlorite 作者：张欣 ; 衣守志 ; 陈辉霞 ; 徐红彬 英文作者：ZHANG Xin;YI Shouzhi;CHEN Huixia;XU Hongbin;College of Chemical Engineering and Material Sciences,Tianjin University of Science & Technology;Key Laboratory of Green Process and Engineering,Chinese Academy of Sciences;National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,Chinese Academy of Sciences; 关键词：碱性染料废水 ; 次氯酸钠 ; 氧化降解 ; 反应动力学 英文关键词：alkaline dye wastewater;;sodium hypochlorite;;oxidative degradation;;reaction kinetics 中文刊名：环境污染与防治 英文刊名：Environmental Pollution & Control 机构：天津科技大学化工与材料学院;中国科学院绿色过程与工程重点实验室;中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室; 出版日期：2019-08-15 出版单位：环境污染与防治 年：2019 期：08 基金：国家水体污染控制与治理科技重大专项(No.2018ZX07402005) 语种：中文; 页：20-23 页数：4 CN：33-1084/X ISSN：1001-3865 分类号：X703

摘要

采用次氯酸钠对碱性玫瑰精生产模拟废水进行氧化降解,考察了初始COD浓度、反应pH、次氯酸钠投加量、反应时间、反应温度等因素对降解效果的影响,并进行了动力学特征研究。结果表明,向50mL初始COD为1 050mg/L的碱性玫瑰精生产模拟废水中投加次氯酸钠溶液(质量分数为8%)3.0mL,控制反应pH为3.0,常温下搅拌反应30min,COD去除率可以达到88%左右,且该反应过程呈现一级动力学特征。
        The oxidative degradation of simulated Rhodamine B wastewater by sodium hypochlorite solution was studied.The effects of the important factors on dye wastewater degradation(including the initial COD concentration of dye wastewater,the reaction pH,the dosage of sodium hypochlorite,the reaction time as well as the temperature)and the dynamic characteristics were investigated.The results showed that the removal efficiency of COD was about88% under the condition that initial COD mass concentration of Rhodamine B wastewater was 1 050 mg/L,the volume was 50 mL,the reaction pH was 3.0,the reaction time was 30 min and the dosage of sodium hypochlorite solution(mass fraction of 8%)was 3.0 mL.The degradation of Rhodamine B could be well fitted with the pseudofirst-order kinetics model.

引文

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