有序纳孔Ti<sub>4</sub>O<sub>7</sub>电活性膜的制备及其深度处理焦化废水

于冀芳; 池明哲; 白飞飞; 孙刚; 王建兵

doi:10.13205/j.hjgc.202609003

有序纳孔Ti₄O₇电活性膜的制备及其深度处理焦化废水

doi: 10.13205/j.hjgc.202609003

于冀芳^1,2,
池明哲^1,2,
白飞飞^1,2,
孙刚^1,2,
王建兵^3, ,

1. 煤科(北京)新材料科技有限公司, 北京 100013;
2. 煤炭科学技术研究院有限公司, 北京 100013;
3. 中国矿业大学(北京) 化学与环境工程学院, 北京 100083

基金项目:

国家自然科学基金项目“亚氧化钛电化学活性膜研制及其去除工业反渗透浓盐水中有机物机理研究”（51978658）：煤炭科学技术研究院有限公司科技发展基金项目（2025JC-05）

详细信息

作者简介:
于冀芳(1985—),女,工程师,主要从事化工废水高级氧化研究和矿用材料研发。yujf13366228056@126.com

通讯作者:
王建兵(1978—),男,教授,主要从事矿井水处理和化工废水高级氧化研究工作。wangjb@cumtb.edu.cn

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出版历程
- 收稿日期: 2025-11-02
- 网络出版日期: 2026-11-05

Preparation of ordered nano-porous Ti₄O₇ REM and its performance in treatment of coking wastewater

YU Jifang^1,2,
CHI Mingzhe^1,2,
BAI Feifei^1,2,
SUN Gang^1,2,
WANG Jianbing^{3
, ,}

1. Coal Science (Beijing) New Material Technology Co., Ltd., Beijing 100013, China;
2. China Coal Research Institute, Beijing 100013, China;
3. School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China

摘要

摘要: 目前，现有的二级生化工艺难以实现焦化废水COD的达标排放，以亚氧化钛电活性膜（Ti₄O₇ REM）为阳极的电化学氧化技术虽可有效去除二级生化出水中的有机物，但存在处理能耗高的问题，提高电极催化活性是降低能耗的关键。研究自组装合成了有序纳孔Ti₄O₇颗粒，并将其负载于多孔钛基底上，得到Ti基有序纳孔Ti₄O₇颗粒电活性膜（称为有序纳孔Ti₄O₇ REM），并以此为阳极构建Ti₄O₇ REM叠加式反应器，用于深度去除焦化废水生化出水中的有机物。结果表明：有序纳孔Ti₄O₇ REM通过压缩空间电荷层宽度（d_sc=0.97 nm）增加其发生电子隧穿的概率，缩短了电子传输的路径，显著提高了·OH的激发活性；在电流密度为15 mA/cm²，电解时间为120 min的氧化条件下，有序纳孔Ti₄O₇ REM叠加式反应器能耗为96.7 kW·h/kg，TOC去除率为62.7%，COD去除率高达88.5%，出水COD可满足GB 16171—2012《炼焦化学工业污染物排放标准》限值要求。
- Ti₄O₇ /
- 电活性膜 /
- 电化学氧化 /
- 焦化废水 /
- 二级生化出水
Abstract: In recent years， the existing secondary biochemical process has been difficult to achieve the standard COD discharge of coking wastewater. Although the electrochemical oxidation technology with Ti₄O₇ REM as the anode can effectively remove organic matter in the secondary biochemical effluent， there is a problem of high energy consumption. Enhancing the catalytic activity of the electrodes is the key to reducing the energy consumption. To enhance the catalytic activity of Ti₄O₇ REM， ordered nano-porous Ti₄O₇ particles were synthesized by self-assembly in this research. These particles were then loaded onto a porous titanium substrate， to obtain a Ti-based ordered nano-porous Ti₄O₇ electroactive membrane （named ordered nano-porous Ti₄O₇ REM）. Using ordered nano-porous Ti₄O₇ REM as the anode， the Ti₄O₇ REM superimposed reactor was constructed to deeply remove the organic substances in the biochemical effluent of coking wastewater. The result showed that the ordered nanoporous structure compressed the width of the charge layer （d_sc = 0.97 nm）， increasing the probability of electron tunneling and shortening the electron transmission path， which enhanced the excitation activity of ·OH. Under the oxidative conditions of a current density of 15 mA/cm² and the electrolysis time of 120 minutes， the energy consumption was 96.7 kW·h/kg COD， the TOC removal rate was 62.7%， the COD removal rate was 88.5%， and the effluent COD met the limit requirements of the Pollutant Discharge Standard for Coking Chemical Industry（GB 16171—2012）.
- Ti₄O₇ /
- reactive electrochemical membrane /
- electrochemical oxidation /
- coking wastewater /
- secondary biochemical effluent

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参考文献(20)

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