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电化学氧化耦合铁感应电极激发过硫酸盐氧化处理焦化废水生化出水

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王维大, 王丽丽, 孙岩柏, 王建国, 杨文焕, 张婷婷, 李卫平. 电化学氧化耦合铁感应电极激发过硫酸盐氧化处理焦化废水生化出水[J]. 环境化学, 2019, (11): 2563-2572. doi: 10.7524/j.issn.0254-6108.2018121009
引用本文: 王维大, 王丽丽, 孙岩柏, 王建国, 杨文焕, 张婷婷, 李卫平. 电化学氧化耦合铁感应电极激发过硫酸盐氧化处理焦化废水生化出水[J]. 环境化学, 2019, (11): 2563-2572. doi: 10.7524/j.issn.0254-6108.2018121009
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WANG Weida, WANG Lili, SUN Yanbai, WANG Jianguo, YANG Wenhuan, ZHANG Tingting, LI Weiping. Electrochemical oxidation coupling iron plate induction electrode excited persulfate oxidation treatment of coking wastewater biochemical water[J]. Environmental Chemistry, 2019, (11): 2563-2572. doi: 10.7524/j.issn.0254-6108.2018121009
Citation: WANG Weida, WANG Lili, SUN Yanbai, WANG Jianguo, YANG Wenhuan, ZHANG Tingting, LI Weiping. Electrochemical oxidation coupling iron plate induction electrode excited persulfate oxidation treatment of coking wastewater biochemical water[J]. Environmental Chemistry, 2019, (11): 2563-2572. doi: 10.7524/j.issn.0254-6108.2018121009
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电化学氧化耦合铁感应电极激发过硫酸盐氧化处理焦化废水生化出水

  • 1. 内蒙古科技大学能源与环境学院, 包头, 014010;

  • 2. 西安建筑科技大学环境与市政工程学院, 西安, 710055

    • 通讯作者: 李卫平, E-mail: sjlwp@163.com
  • 基金项目:

    内蒙古科技创新引领项目（KCBJ2018033），包头市科技计重点领域技术攻关项目（2017Z1009-1）和内蒙古自然科学基金（2018LH04002，2018LH04003）资助.

Electrochemical oxidation coupling iron plate induction electrode excited persulfate oxidation treatment of coking wastewater biochemical water

  • 1. School of Energy and Environment of Inner Mongolia University of Science and Technology, Baotou, 014010, China;

  • 2. School of Environmental and Municipal Engineering of Xi'an University of Architecture and Technology, Xi'an, 710055, China

    • Corresponding author: LI Weiping, sjlwp@163.com
  • Fund Project: Supported by Inner Mongolia Science and Technology Innovation Leading Project(KCBJ2018033),Baotou City Science and Technology Key Field Technical Research Project(2017Z1009-1)and Inner Mongolia Natural Science Foundation(2018LH04002,2018LH04003).

  • 摘要: 采用电化学氧化（EC）耦合铁（IP）感应电极激发过硫酸盐（KPS）氧化处理焦化废水生化出水，在反应器阴、阳极之间等距离嵌入铁板构建电化学双电解反应体系.该体系中，铁板作为感应电极，充当阳极材料的同时兼具有阴极材料的作用，加快过硫酸盐的活化.在电化学氧化耦合铁感应电极激发过硫酸盐（EC/IP/KPS）试验中，分别将电解时间（0—50 min）、电流密度（0—60 mA·cm-2）和过硫酸钾（KPS）投加量（0—5 mmol·L-1）作为控制条件，探讨了在不同的影响条件下该电化学反应体系对水中COD、TOC及UV254等有机物污染指标的降解程度.在此基础上，利用SEM、EDS、XRD和XPS等对EC/IP/KPS过程中产生的絮凝物进行了表征，进而推断EC/IP/KPS系统的反应机理.结果表明，在EC/IP/KPS系统中的耦合作用下，当电解时间为30 min、电流密度为30 mA·cm-2、过硫酸钾浓度为2 mmol·L-1时，COD去除率可达77.0%、TOC去除率为54.0%，UV254值明显降低.此外，还对3种不同的实验过程进行了对比，发现EC/IP/KPS系统的处理效果要明显优于KPS和EC/IP处理体系.
    Abstract: Electrochemical(EC) oxidation coupling iron plate(IP) induction electrode excited persulfate(KPS) oxidation treatment of coking wastewater biochemical water. Electrochemical double electrolytic reaction system was built in the iron plate equidistantly between the reactor cathode and anode. In this system iron plate (IP) as an inductive electrode, acted as an anode material as well as a cathode material, accelerating the activation of persulfate. In an electrochemical oxidation coupled iron plate induction electrode induced persulfate test, electrolysis time (0-50 min), current density (0-60 mA·cm-2) and persulfate (KPS) addition amount (0-5 mmol·L-1) were used as the control conditions, the degradation degree of organics pollution indexes including COD, TOC and UV254 was discussed under different conditions. On this basis, the flocs produced in the EC/IP/KPS process were characterized by SEM, EDS, XRD and XPS, and the reaction mechanism of the EC/IP/KPS system was inferred. The results showed that when the electrolysis time was 30 min, the current density was 30 mA·cm-2, and the persulfate concentration was 2 mmol·L-1, the COD removal rate was 77.0%, the TOC removal rate was 54.0% and the UV254 value was reduced significantly under the coupling effect of EC/IP/KPS system. It was found that the processing effect of EC/IP/KPS system was better significantly than that of the PS and EC/IP systems, during the comparison of three different experimental processes.
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  • 收稿日期:  2018-12-10

电化学氧化耦合铁感应电极激发过硫酸盐氧化处理焦化废水生化出水

    通讯作者: 李卫平, E-mail: sjlwp@163.com
  • 1. 内蒙古科技大学能源与环境学院, 包头, 014010;
  • 2. 西安建筑科技大学环境与市政工程学院, 西安, 710055
  • 收稿日期:  2018-12-10
基金项目:

内蒙古科技创新引领项目（KCBJ2018033），包头市科技计重点领域技术攻关项目（2017Z1009-1）和内蒙古自然科学基金（2018LH04002，2018LH04003）资助.

摘要: 采用电化学氧化（EC）耦合铁（IP）感应电极激发过硫酸盐（KPS）氧化处理焦化废水生化出水，在反应器阴、阳极之间等距离嵌入铁板构建电化学双电解反应体系.该体系中，铁板作为感应电极，充当阳极材料的同时兼具有阴极材料的作用，加快过硫酸盐的活化.在电化学氧化耦合铁感应电极激发过硫酸盐（EC/IP/KPS）试验中，分别将电解时间（0—50 min）、电流密度（0—60 mA·cm-2）和过硫酸钾（KPS）投加量（0—5 mmol·L-1）作为控制条件，探讨了在不同的影响条件下该电化学反应体系对水中COD、TOC及UV254等有机物污染指标的降解程度.在此基础上，利用SEM、EDS、XRD和XPS等对EC/IP/KPS过程中产生的絮凝物进行了表征，进而推断EC/IP/KPS系统的反应机理.结果表明，在EC/IP/KPS系统中的耦合作用下，当电解时间为30 min、电流密度为30 mA·cm-2、过硫酸钾浓度为2 mmol·L-1时，COD去除率可达77.0%、TOC去除率为54.0%，UV254值明显降低.此外，还对3种不同的实验过程进行了对比，发现EC/IP/KPS系统的处理效果要明显优于KPS和EC/IP处理体系.

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