电-多相臭氧催化工艺深度处理焦化废水

李新洋; 李燕楠; 祁丹阳; 张昊; 陈安生; 于晓华; 姚宏

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中国环境科学 ›› 2020, Vol. 40 ›› Issue (10) : 4354-4361.

水污染与控制

电-多相臭氧催化工艺深度处理焦化废水

李新洋^1,2, 李燕楠^1,2, 祁丹阳^1,2, 张昊^1,2, 陈安生¹, 于晓华^1,2, 姚宏^1,2

作者信息 +

Study on electrochemical heterogeneous catalytic ozonation process for treatment of coking wastewater

LI Xin-yang^1,2, LI Yan-nan^1,2, QI Dan-yang^1,2, ZHANG hao^1,2, CHEN An-sheng¹, YU Xiao-hua^1,2, YAO hong^1,2

Author information +

文章历史 +

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（TiO_2-NF）与O₃/TiO_2-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/TiO_2-NF获得的去除率（25.8%，20.9%），即便在O₃/TiO_2-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%.

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 (TiO_2-NF) process, the O₃/TiO_2-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/TiO_2-NF process. Even with 5g/L of H₂O₂ added in the above O₃/TiO_2-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/TiO_2-NF/H₂O₂ system was still not as good as the E-catazone process.

导出引用

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. 2020, 40(10): 4354-4361

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. 2020, 40(10): 4354-4361

中图分类号： X703

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