荧光增白剂生产废水不同预处理方法的比较

中国环境科学2010,30(11)：1459~1465ChinaEnvironmentalScience荧光增白剂生产废水不同预处理方法的比较李江颂1,王健行2,李日强1*,王爱英1(1.山西大学环境与资源学院,山西太原030006；2.山西大学黄土高原研究所,山西太原030006)摘要：采用Fenton试剂氧化、O3氧化、曝气铁炭微电解3种方法对荧光增白剂生产废水进行了处理,考察了不同影响因素对3种处理方法处理效果的影响.结果表明,在H2O2投加量为0.13mol/L、H2O2与Fe2+的物质的量比为20、pH值为5.0、反应时间为1.0h时,Fenton试剂氧化处理效果最好,CODCr去除率达到39.9%,BOD5/CODCr提高到0.51.在反应时间为70min(O3通入量为2.51g/L)、pH值为9.2时,O3氧化处理效果较好,CODCr去除率达到36.7%,BOD5/CODCr提高到0.47.在铁炭质量比为1、反应时间为2.0h、pH值为2.5时,曝气铁炭微电解效果最好,CODCr去除率达到57.1%,BOD5/CODCr提高到0.45.3种预处理方法均可有效降解荧光增白剂生产废水中的有机物并且提高废水的可生化性,其中曝气铁炭微电解的效果最好,处理成本最低,可以应用于荧光增白剂生产废水的处理中.关键词：荧光增白剂生产废水；Fenton试剂氧化；O3氧化；曝气铁炭微电解；预处理中图分类号：X703.1文献标识码：A文章编号：1000-6923(2010)11-1459-07Comparisonsofseveralpretreatmentmethodsforfluorescentwhiteningagentwastewater.LIJiang-song,WANGJian-xing2,LIRi-qiang1*,WANGAi-ying1(1.SchoolofEnvironmentalScienceandResources,ShanxiUniversity,Taiyuan030006,China；2.InstituteofLoessPlateau,ShanxiUniversity,Taiyuan030006,China).ChinaEnvironmentalScience,2010,30(11)：1459~1465Abstract：ThefluorescentwhiteningagentwastewaterwaspretreatedusingFenton’sreagentoxidization,ozoneoxidizationoraerateferric-carbonmicro-electrolysismethod,inwhichvariousfactorstotreatmentefficiencyofeachmethodwereexamined.ForFenton’sreagentoxidizationundertheoptimalconditionswhereH2O2dosagewas0.13mol/L,H2O2toFe(II)molarratiowas20,pHwas5.0,andthereactiontimewas1.0h,theCODCrremovalratereachedto39.9%andtheBOD5/CODCrto0.51.Forozoneoxidizationtheoptimalconditionswere:reactiontimeof70min(theozonedosageof2.51g/L),pHat9.2,underwhichtheCODCrremovalratereachedto36.7%BOD5/CODCrto0.47.Foraerateferric-carbonmicro-electrolysismethodtheCODCrremovalratecouldreachto57.1%theBOD5/CODCrto0.45undertheoptimalconditionsof:irontocarbonweightratioof1,reactiontimefor2.0h,andpHat2.5.Theorganicmattersinfluorescentwhiteningagentwastewatercouldberemovedeffectivelyandthebiodegradabilitycouldbeimprovedbyeachmethod.Comparativelytheaerateferric-carbonmicro-electrolysismethodhadthehighestCODCrremovalrateandthelowestcostofwastewatertreatment,sugg