铁-锰-碳微电解法处理对苯二酚废水  

Treatment of Hydroquinone-Containing Wastewater by Fe-Mn-C Microelectrolysis Process

作　　者：李彤[1] 杨浩[1] 杨凯文[1] 于涵[1] 薛文婧[1] 邹东雷[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130000

出　　处：《化工环保》2015年第2期127-131,共5页Environmental Protection of Chemical Industry

摘　　要：在传统铁-碳微电解填料(简称铁-碳填料)中加入锰粉进行改性,制备了规整化铁-锰-碳改性微电解填料(简称铁-锰-碳填料),并采用该填料处理质量浓度为1 000 mg/L的模拟对苯二酚废水。实验结果表明:在铁-锰-碳填料投加量25.0 g/L、反应时间4.0 h、锰粉质量分数9%、初始废水pH为3的最佳工艺条件下,对苯二酚去除率达95.55%;与铁-碳填料相比,铁-锰-碳填料可大幅提高对苯二酚的去除率,且对废水pH的适应范围较宽;采用铁-锰-碳填料处理对苯二酚废水的过程中,废水pH大体呈现先上升后下降的趋势;由降解中间产物可推断对苯二酚首先被氧化为对苯醌,然后逐渐降解为有机酸。The regular modified Fe-Mn-C microelectrolysis packing（Fe-Mn-C packing） was prepared by adding manganese powder into the traditional Fe-C microelectrolysis packing（Fe-C packing）,and was used in treatment of the simulation wastewater with 1 000 mg/L of mass concentration. The experimental results show that： Under the optimum conditions of Fe-Mn-C packing dosage 25.0 g/L,reaction time 4.0 h,Mn mass fraction 9% and initial wastewater pH 3,the removal rate of hydroquinone is 95.55%;The removal rate of hydroquinone on Fe-Mn-C packing is greatly improved and the adaptation range of wastewater pH is also widened;The wastewater pH rises fi rst and then declines during the treatment of hydroquinone wastewater using Fe-Mn-C packing. According to intermediates,the process of hydroquinone degradation can be concluded as follows： hydroquinone is oxidized into benzoquinone at fi rst,and then is gradually degraded into organic acid.

关 键 词：微电解填料 对苯二酚废水 锰 中间产物 

分 类 号：X78[环境科学与工程—环境工程]