催化臭氧化体系射流曝气系统参数优化及苯酚阶段氧化分析  

Parameter optimization of jet aeration in catalytic ozonation system and analysis of stage oxidation of phenol

作　　者：朱昊 刘汉飞 高源 白蓉蓉 倪嵩波 黄益平 李庆同 李小东 韩卫清[2] ZHU Hao;LIU Hanfei;GAO Yuan;BAI Rongrong;NI Songbo;HUANG Yiping;LI Qingtong;LI Xiaodong;HAN Weiqing(China Construction Industrial&Energy Engineering Group Co.,Ltd.,Nanjing 210046,Jiangsu,China;School of Environmental and Biological Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;China Construction Xinjiang Installation Engineering Co.,Ltd.,Urumqi 830092,Xinjiang,China)

机构地区：[1]中建安装集团有限公司,江苏南京210046 [2]南京理工大学环境与生物工程学院,江苏南京210094 [3]中建新疆安装工程有限公司,新疆乌鲁木齐830092

出　　处：《化工进展》2023年第5期2717-2723,共7页Chemical Industry and Engineering Progress

基　　金：中建安装2020年度科技研发计划(AZ-2020-05);中国建筑股份有限公司2022年度科技研发课题(CSCEC-2022-Q-60);中建安装2022年度科技研发计划(CSCEC-PT-007-04)。

摘　　要：作为酚类化合物的典型,苯酚在含酚废水中含量高、毒性范围大,掌握水中苯酚的有效处理方法将为含酚废水的高效处理提供技术支撑。本文通过分析5种臭氧催化剂的催化性能,选择A型催化剂作为臭氧射流曝气系统的优选催化剂。优化了系统关键运行参数,结果表明,当循环水流速、废水pH和污染物初始浓度分别为1400L/h、8和148mg/L时,基于A型催化剂的射流曝气系统对污染物具有良好的去除效果,此时废水COD平均去除率为56.7%。以不同时间节点废水的三维荧光光谱、GC-MS和好氧呼吸抑制率作为评价指标,考察了苯酚的阶段氧化进程。综合分析各评价指标,发现当反应时间为60min时,废水三维荧光光谱对应的荧光区域E_(x)/E_(m)为(300~350nm)/(420~460nm)可能是苯酚在臭氧高级氧化过程高效率降解、低好氧呼吸抑制的指示因子。As a typical phenolic compound,phenol showed the characteristics of high content and wide range of toxicity in phenol-containing wastewater.Mastering effective method of phenol treatment will provide technical support for the efficient treatment of phenol-containing wastewater.By analyzing the catalytic performance of five ozone catalysts,type A catalyst was selected as the preferred catalyst in ozone jet aeration system.The key operating parameters of the system were optimized.The results showed that the jet aeration system based on type A catalyst presented the good pollutants removal performance with an average COD removal efficiency of 56.7%when the circulating water velocity,wastewater pH and initial concentration of pollutant were 1400L/h,8 and 148mg/L,respectively.The stage oxidation of phenol at different time nodes was investigated using three-dimensional fluorescence spectra,GC-MS and aerobic respiratory inhibition rate as evaluation indexes.By comprehensive analysis of the evaluation indexes,it was found that E_(x)/E_(m) was(300~350nm)/(420~460nm)region in the three-dimensional fluorescence spectrum might be an indicator of high removal efficiency and low aerobic respiratory inhibition at the reaction time of 60min.

关 键 词：臭氧 催化剂 废水 优化 阶段氧化 

分 类 号：TU992.3[建筑科学—市政工程]