曝气及外加H2O2强化电芬顿法处理石化反渗透浓水

doi:10.16085/j.issn.1000-6613.2017-0165

化工进展 ›› 2017, Vol. 36 ›› Issue (09): 3523-3530.DOI: 10.16085/j.issn.1000-6613.2017-0165

曝气及外加H₂O₂强化电芬顿法处理石化反渗透浓水

吴月^1,2,3, 孙宇维^2,3, 王岽⁴, 张健^2,3, 何沛然^2,3, 李玉平¹, 张忠国^2,3, 曹宏斌¹

1 中国科学院过程工程研究所, 北京 100190;
2 轻工业环境保护研究所, 北京 100095;
3 中国轻工业节能节水与废水资源化重点实验室, 北京 100095;
4 中国石油化工股份有限公司北京化工研究院, 北京 102500

收稿日期:2017-01-24 修回日期:2017-05-11 出版日期:2017-09-05 发布日期:2017-09-05
通讯作者: 张忠国,博士,研究员,从事废水深度处理技术研究工作;李玉平,博士,研究员,从事废水深度处理技术研究工作。
作者简介:吴月(1987-),女,硕士研究生,助理研究员,研究方向容为高浓度难降解废水深度处理技术。E-mail:wuyue_2000@sina.com
基金资助:
北京市自然科学基金（8162017）及北京市科学技术研究院海外人才专项（OTP-2013-015）项目。

Enhanced treatment of petrochemical reverse osmosis concentrate by an electro-Fenton process with dosing H₂O₂ and aeration

WU Yue^1,2,3, SUN Yuwei^2,3, WANG Dong⁴, ZHANG Jian^2,3, HE Peiran^2,3, LI Yuping¹, ZHANG Zhongguo^2,3, CAO Hongbin¹

1 Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 Environmental Protection Research Institute of Light Industry, Beijing 100095, China;
3 Key Laboratory of Energy-Water Conservation and Wastewater Resources Recovery(Environmental Protection Research Institute of Light Industry), China National Light Industry, Beijing 100095, China;
4 SINOPEC Beijing Research Institute of Chemical Industry, Beijing 102500, China

Received:2017-01-24 Revised:2017-05-11 Online:2017-09-05 Published:2017-09-05

摘要/Abstract

摘要： 以铁板为阳极、不锈钢板为阴极，采取外加H₂O₂的方式构建电芬顿体系，处理石化废水反渗透浓水，以降低投资，减少污泥量，解决阴极产生H₂O₂低效率的问题。考察了H₂O₂投加量、pH、电流密度，特别是通气条件等因素对废水处理效果的影响。研究发现，曝气可有效强化电芬顿过程，显著提高有机物去除率，改善污泥沉降效果。在H₂O₂投加浓度150mg/L、pH=4.0、电流密度为10mA/cm²、空气曝气量为120L/h的条件下，反应仅10min，COD去除率即可达57.1%，继续反应至60min，COD去除率最大可达66.7%，出水COD<20mg/L，满足北京市《水污染物综合排放标准》（DB 11/307-2013）中A类排放限值。该电芬顿法在短时间内即可高效处理石化废水反渗透浓水，污染物去除率显著高于相关研究结果，具有广阔的应用前景。

关键词: 电芬顿, 反渗透浓水, 高级氧化, 曝气, 石化废水

Abstract: To reduce investment and sludge volume and to solve the problem of low production rate of H₂O₂ on cathode,an electro-Fenton system using iron and stainless steel sheets as anode and cathode respectively was established for treating reverse osmosis concentrate of petrochemical wastewater. The effects of H₂O₂ concentration,pH,current density,and aeration conditions on treatment efficiency were investigated. The results showed that aeration could effectively enhance the electro-Fenton process,improve the removal of organic matter,and significantly increase sludge settling velocity. The optimum conditions were H₂O₂ dosage of 150 mg/L,pH of 4,current intensity of 10mA/cm²,and air flux of 120L/h. After reaction of 10 min the removal of COD_Cr was up to 57.1%. Then at the reaction time of 60 min,the removal rate of COD was 66.7%,with the effluent COD<20mg/L,and the main indicators of the treated water satisfied the class B emission limits of "Integrated Discharge Standard of Water Pollutants"(DB 11/307-2013)of Beijing. The method can effectively treat the RO concentrate of petrochemical wastewater in a short time,with a higher pollutants removal than those reported by other relevant researches,and so has a wide application prospect. The enhancement of aeration on pollutants removals found in the study will probably become a hot area of research and application in the future.

Key words: electro-Fenton, reverse osmosis concentrate, advanced oxidation process, aeration, petrochemical wastewater

中图分类号:

X742

吴月, 孙宇维, 王岽, 张健, 何沛然, 李玉平, 张忠国, 曹宏斌. 曝气及外加H₂O₂强化电芬顿法处理石化反渗透浓水[J]. 化工进展, 2017, 36(09): 3523-3530.

WU Yue, SUN Yuwei, WANG Dong, ZHANG Jian, HE Peiran, LI Yuping, ZHANG Zhongguo, CAO Hongbin. Enhanced treatment of petrochemical reverse osmosis concentrate by an electro-Fenton process with dosing H₂O₂ and aeration[J]. Chemical Industry and Engineering Progress, 2017, 36(09): 3523-3530.

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曝气及外加H₂O₂强化电芬顿法处理石化反渗透浓水

Enhanced treatment of petrochemical reverse osmosis concentrate by an electro-Fenton process with dosing H₂O₂ and aeration

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