Page 144 - 《环境工程技术学报》2022年第5期

Vol.12，No.5 环 境 工 程 技 术 学 报 第 12 卷，第 5 期
Sep.，2022 Journal of Environmental Engineering Technology 2022 年 9 月

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王勇，张耀宗，毕莹莹，等.含酚废 水 α-Fe O 催化臭氧氧化参数优化及机理分 析 [J].环境工程技术学报，2022，12（5）：1500-1507.
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WANG Y,ZHANG Y Z,BI Y Y,et al.Optimization and mechanism analysis of α-Fe O catalytic ozone oxidation parameters for phenolic
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wastewater[J].Journal of Environmental Engineering Technology，2022，12（5）：1500-1507.
含酚废 水 α-Fe O 催化臭氧氧化参数优化及机理分析
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王勇 ，张耀宗 ，毕莹莹 ，杜明辉 ，孙晓明 1*
1.国家环境保护生态工业重点实验室, 中国环境科学研究院
2.华北理工大学建筑与土木工程学院
摘要 传统工艺对含酚废水的处理效果有限，催化臭氧氧化技术能够有效处理含酚废水。α-Fe O 在试验中表现出了高臭氧催
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化活性，催化产生的·O 可对苯酚及中间产物进行无选择性矿化，显著增强了污染物去除效果和臭氧利用水平。为明确催化臭
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氧氧化过程主要影响因素并优化工艺参数，以苯酚模拟含酚废水，设计 了 L (4 ) 正交试验。结果表明，臭氧投加量、催化剂投加
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量、pH、反应时间 是 CO 去除率及单位臭 氧 CO 降解量的主要影响因素，其中，臭氧投加量与反应时间的影响较为显著。方
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差分析与试验验证表明，催化剂投加量 对 CO 去除率影响较小，p 对单位臭 氧 CO 降解量影响较小。通过权矩阵计算得到
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优化后的反应条件：臭氧投加量 为 5 mg/(L·min)，催化剂投加量 为 0.10 g/L，p H 为 9，反应时间 为 45 min。叔丁醇屏蔽试验表
明，·O 显著促进了催化臭氧氧化进程。
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关键词 α-Fe O ；催化臭氧氧化；苯酚；正交试验；权矩阵
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中图分类号：X703 文章编号：1674-991X（2022）05-1500-08 doi：10.12153/j.issn.1674-991X.20210355
Optimization and mechanism analysis of α-Fe O catalytic ozone oxidation
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parameters for phenolic wastewater
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WANG Yong , ZHANG Yaozong , BI Yingying , DU Minghui , SUN Xiaoming 1*
1.State Environmental Protection Key Laboratory of Ecological Industry, Chinese Research Academy of Environmental Sciences
2.School of Architecture and Civil Engineering, North China University of Science and Technology
Abstract The traditional process has a limited effect on the treatment of phenolic wastewater, and catalytic
ozonation technology can effectively treat phenolic wastewater. α-Fe O has exhibited high ozone catalytic activity
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in previous experiments. ·OH produced by catalysis can non-selectively mineralize phenol and intermediate
products, which significantly enhances the removal of pollutants and the level of ozone utilization. In order to clarify
the main influencing factors of the catalytic ozone oxidation process and optimize the process parameters, phenol
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was used to simulate phenolic wastewater, and L (4 ) orthogonal experiment was designed. The results showed that
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ozone dosage, catalyst dosage, pH, and reaction time were the main influencing factors of COD removal rate and
COD degradation per unit ozone. Among them, ozone dosage and reaction time had the most significant impact on
the two indicators. Variance analysis and experimental verification showed that catalyst dosage had little effect on
COD removal rate, and reaction pH had little effect on COD degradation per unit ozone. The optimized process
parameters were calculated by weight matrix: ozone dosage was 5 mg/(L·min), catalyst dosage was 0.1 g/L, pH was
9, and reaction time was 45 min. Tert butyl alcohol shielding experiments showed that ·OH significantly promoted
the catalytic ozone oxidation process.
Key words α-Fe O ; catalytic ozone oxidation; phenol; orthogonal experiment; weight matrix
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焦化、造纸、印染及制药等行业生产过程会产 臭氧分解生成·O H 等自由基，从而有效降解含酚废
生大量含酚废水，是国内外污水处理领域的一大难 水 [2-3] 。同时，催化剂可降低臭氧在气相-液相转换时
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题，采用传统工艺很难将其去除 。催化剂能够促进 的传质阻力 ，从而提高臭氧利用率。铁基催化剂由
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收稿日期：2021-07-16
基金项目：国家水体污染控制与治理科技重大专项（2017ZX07402-002）
作者简介：王勇（1997—），男，硕士研究生，主要从事水污染控制与废水资源化研究，1833055310@qq.com
* 责任作者：孙晓明（1978—），男，研究员，博士，主要从事水污染控制与废水资源化研究，sunxm52@126.com