O_3/GAC降解饮用水中2,6-二氯-1,4-苯醌的研究  

Removal of halogenated carbon disinfection by-product 2,6-dichloro-1,4-benzoquinone by ozone and granular activated carbon

作　　者：丁春生[1] 苗世茂 赵世督 肖毛虎 邹胜男[1] DING Chun-sheng;MIAO Shi-mao;ZHAO Shi-du;XIAO Mao-hu;ZOU Sheng-nan(College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China)

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014

出　　处：《中国环境科学》2017年第6期2173-2178,共6页China Environmental Science

基　　金：浙江省自然科学基金资助项目(Y5110339);浙江省公益性技术应用研究计划项目(2012C23055)

摘　　要：为了降低饮用水在消毒过程中产生的消毒副产物(DBPs)2,6-二氯-1,4-苯醌(2,6-DCBQ)对人体健康带来的危害,以2,6-DCBQ为研究对象,采用O_3/GAC联合工艺,系统地研究了2,6-DCBQ的控制技术,并分析和探讨了其降解机理及动力学规律.结果表明,单独臭氧(O_3)和单独颗粒活性炭(GAC)对2,6-DCBQ的去除率分别为29.64%和32.81%,降解效果一般.而O_3/GAC联合工艺可以有效地降解2,6-DCBQ,其降解效果随着初始浓度、O_3浓度以及GAC的投加量的增大而提高.当2,6-DCBQ初始浓度为20μg/L,O_3浓度为10.06mg/L,GAC投加量为0.5g/L时,反应90min后,2,6-DCBQ降解效率达到84.93%.O_3/GAC联合工艺降解2,6-DCBQ的过程符合一级反应动力学规律.2,6-dichloro-1,4-benzoquinone(abbreviated as2,6-DCBQ),one kind of disinfection by-products(DBPs)indrinking water has a vital impact on human health.Therefore,the study on the control of2,6-DCBQ by an integratedozone-granular activated carbon(O3/GAC)process was made.In addition,the degradation mechanism and its dynamicswere analyzed and discussed.The results indicated that the2,6-DCBQ removal with individual O3or GAC processreached29.64%and32.81%respectively.The2,6-DCBQ could be removed more effectively by O3/GAC compared to theindividual O3or GAC process,and the efficiency was increased with the raise of initial concentration of2,6-DCBQ,O3levels and GAC dosage.It was also found that the2,6-DCBQ removal reached85.37%after the reaction time of90minutes with the initial2,6-DCBQ concentration,O3concentration and GAC addition of20μg/L,10.06mg/L and0.5g/L,respectively.The degradation process of2,6-DCBQ by O3/GAC fit the first-order reaction kinetic model.

关 键 词：消毒副产物 2 6-DCBQ O3/GAC联合工艺 动力学 

分 类 号：X703.5[环境科学与工程—环境工程]