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Chin. J. Process Eng. ›› 2015, Vol. 15 ›› Issue (6): 1006-1011.DOI: 10.12034/j.issn.1009-606X.215283

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Treatment of Phenol-containing Wastewater by Coupled Method of High Gravity Technology-Electrocatalytic Oxidation-Fenton Oxidation

LI Hao-yue LIU You-zhi GAO Jing LEI Quan TONG Chang-heng ZHAN Qi-hong   

  1. Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of China Department of Chemical Engineering, North University of China Department of Chemical Engineering, North University of China Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China
  • Received:2015-07-27 Revised:2015-09-01 Online:2015-12-20 Published:2015-12-20
  • Contact: LIU You-zhi

超重力-电催化-Fenton耦合法处理含酚废水

李皓月 刘有智 高璟 雷权 童昌衡 占启弘   

  1. 中北大学 山西省超重力化工工程技术研究中心 中北大学山西省超重力化工工程技术研究中心 中北大学超重力化工过程山西省重点实验室 中北大学 超重力化工过程山西省重点实验室 中北大学 超重力化工过程山西省重点实验室 中北大学 超重力化工过程山西省重点实验室
  • 通讯作者: 刘有智

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Abstract: The coupled method of high gravity technology-electrocatalytic oxidation and Fenton oxidation was adopted to treat phenol-containing wastewater. The treatment conditions were optimized. The removal rate of phenol-containing wastewater by the coupled method was compared with that by electrocatalytic-Fenton oxidation, high gravity-electrocatalytic oxidation and electrocatalytic oxidation methods. The results showed that the removal rate of phenol and COD could reach up to 99.56% and 65.43%, respectively after 1 h under the conditions of current density 200 A/m2, initial pH value 3, FeSO4·7H2O dosage 1.25 g/L, H2O2 dosage 40 mmol/L, high gravity factor 30 and liquid circulating flowrate 80 L/h. BOD/COD of the treated wastewater increased from 0.081 to 0.53, which accorded with the requirements of biochemical treatment. The removal rate of phenol was 28.05%, 84.13% and 94.79% higher than the three other methods under similar conditions, respectively. The coupled method of high gravity technology-electrocatalytic oxidation and Fenton oxidation could shorten the reaction time and improve the degradation rate of phenol-containing wastewater.

Key words: high gravity, electrocatalysis, Fenton technology, phenol-containing wastewater, degradation

摘要： 采用超重力-电催化-Fenton耦合法处理含酚废水，确定了适宜的工艺条件，与电催化-Fenton耦合法、超重力-电催化耦合法和电催化氧化法的去除效果进行了对比. 结果表明，在电流密度200 A/m2、初始pH值3、投加量FeSO4×7H2O 1.25 g/L和H2O2 40 mmol/L、超重力因子30、液体循环流量80 L/h、降解时间1 h的条件下，处理初始浓度100 mg/L的含酚废水，苯酚和化学需氧量(COD)去除率分别达99.56%和65.43%；废水处理后可生化系数(BOD/COD)由0.081提高到0.52，满足可生化处理要求；相近条件下本实验方法较其他3种方法苯酚去除率分别提高28.05%, 84.13%和94.79%，并缩短了反应时间.

关键词: 超重力, 电催化, Fenton技术, 含酚废水, 降解

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