| 电-多相臭氧催化工艺深度处理焦化废水 |
| |
| 引用本文： | 李新洋,李燕楠,祁丹阳,张昊,陈安生,于晓华,姚宏.电-多相臭氧催化工艺深度处理焦化废水[J].中国环境科学,2021,40(10):4354-4361. |
| |
| 作者姓名： | 李新洋 李燕楠 祁丹阳 张昊 陈安生 于晓华 姚宏 |
| |
| 作者单位： | 1. 北京交通大学土木建筑工程学院, 抗生素/抗性基因水环境污染控制技术北京市国际科技合作基地, 北京 100044;2. 北京交通大学水中典型污染物控制与水质保障北京市重点实验室, 北京 100044 |
| |
| 基金项目： | 北京卓越青年科学家项目（BJJWZYJH01201910004016）；北京市优秀人才青年骨干计划（2018000020124G056） |
| |
| 摘 要： | 本文采用新型电-多相臭氧催化（E-catazone）工艺深度处理焦化废水生化二级出水，开展工艺可行性研究.通过与O3/TiO2纳米花（TiO2-NF）与O3/TiO2-NF/H2O2及单独电化学氧化工艺相比较，对E-catazone工艺技术优势及氧化机理进行探究.结果表明：在相同条件下（O3浓度84mg/L），电-多相臭氧催化获得的COD和TOC的去除率（分别为67.9%，50.0%）显著优于O3/TiO2-NF获得的去除率（25.8%，20.9%），即便在O3/TiO2-NF体系中投加5g/L的H2O2以促进臭氧均相催化效果，但COD和TOC去除率也仅分别提高到63.6%，43.6%.
|
| 关 键 词： | 焦化废水 电-多相臭氧催化 二氧化钛 羟基自由基 |
Study on electrochemical heterogeneous catalytic ozonation process for treatment of coking wastewater |
| |
| LI Xin-yang,LI Yan-nan,QI Dan-yang,ZHANG hao,CHEN An-sheng,YU Xiao-hua,YAO hong.Study on electrochemical heterogeneous catalytic ozonation process for treatment of coking wastewater[J].China Environmental Science,2021,40(10):4354-4361. |
| |
| Authors: | LI Xin-yang LI Yan-nan QI Dan-yang ZHANG hao CHEN An-sheng YU Xiao-hua YAO hong |
| |
| Affiliation: | 1. Beijing International Scientific and Technological Cooperation Base for Antibiotics and Resistance Gens Control, School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China;2. Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing Jiaotong University, Beijing 100044, China |
| |
| Abstract: | In this paper, a new electric-heterogeneous ozone-catalyzed (E-catazone) process was used in advanced treatment of the secondary biochemical effluent from coking wastewater, and the process's feasibility was also studied. By comparing the E-catazone process with three other processes:the O3/TiO2 nanoflowers (TiO2-NF) process, the O3/TiO2-NF/H2O2 process, and the electrochemical oxidation process (EO), the technological advantages and oxidation mechanism of E-catazone were investigated. Under the same conditions (O3 concentration of 84mg/L), the removal rates of COD and TOC (67.9%, 50.0%) in E-catazone process were significantly superior to the performance (25.8%, 20.9%) in O3/TiO2-NF process. Even with 5g/L of H2O2 added in the above O3/TiO2-NF system to promote homogeneous ozone catalytic ability, the obtained removal rates of COD and TOC had only increased to 63.6% and 43.6%, respectively. The performance of O3/TiO2-NF/H2O2 system was still not as good as the E-catazone process. |
| |
| Keywords: | coking wastewater electrochemical heterogeneous catalytic ozonation titanium dioxide hydroxyl radical |
|
| 点击此处可从《中国环境科学》浏览原始摘要信息 |
|
点击此处可从《中国环境科学》下载全文 |
|
