Fenton氧化对活性染料废水的处理李甲亮

253Vol.25,No.3JournalofBinzhouUniversity20096Jun.,2009Fenton:2009-03-12:(1972—),,,,,、.李甲亮1,张万伟2,王宏国3(1.,256603;2.,256600;3.,256603)　　　:针对印染废水脱色难的问题,实验采用Fenton氧化正交试验法对活性红、蓝、黑SNE3种单体活性染料配制的模拟废水和实际印染废水进行了脱色和去除COD的研究.结果表明,Fenton法对印染废水色度有90%以上的脱色效果,其最优化实验条件为:水样初始pH=4,30%H2O2投加量为2ml/L,FeSO4·7H2O投加量为400mg/L,反应时间为30min.优化条件下,在废水有效脱色的同时,Fenton氧化还能使实际印染废水COD去除率达91.88%,降解效果明显.　　:活性染料废水;Fenton氧化;脱色　　:X505　　:A　　:1673-2618(2009)03-0079-04、、、、、、,、,.:、[1].,,,;,;、、,.(AOPs),Fenton,[2-5].,Fenton、、、、、、、、、,Fenton.1　Fenton,(:-N=N-、-N=O)(:-SO3Na、-OH、-NH2、-COOH);、(NaCl、Na2SO4)、(HCl、NaOHNa2CO3)、、、(、、)、().FentonH2O2OH·,CO2H2O,:H2O2+Fe2+※OH-+Fe3++·OH;R-H+·OH※R·+H2O;R·+Fe3+※Fe2++R+;R·+H2O2※OH+·OH.,H2O2·OH:·OH+H2O2※HO2·+H2O;Fe2+:Fe2++25·OH※Fe3++OH-Fe2++HO2·※HO2-+Fe3+,Fe3+:Fe3++H2O2※Fe2++HO2·+H+HO2·+Fe3+※Fe2++O2+H+.Fe2+,H2O2[6].·OH、HO2·,·OH.,Fe3+,.·OH,pH、Fe2+/H2O2,、[7-8].2　2.1　(1):SNE,SNE,SNE20mg/L、40mg/L、200mg/L.(2):,,pH12.7,,.2.2　2.2.1　废水最大吸收波长的确定　,(420～700nm)5nm,.2.2.2　仪器和方法　:751、COD;COD.2.2.3　脱色实验条件的正交优化　(1):4(pH、FeSO4、H2O2、),1.(2):1,50mlFeSO4·7H2O,pH,H2O2,(200r/min),,,..1　4×3pHFeSO4/(mg·L-1)30%H2O2/(ml·L-1)/min1320022024300430354006402.2.4　优化条件下废水COD的去除效果　,FentonCOD,.3　3.1　:3(、SNE):535nm、600nm600nm.,425nm.3.2　3.2.1　单体染料的最佳操作条件　,20mg/LFenton2.,Fenton4,H2O2,.9:pH=4,FeSO4·7H2O400mg/L,H2O22ml/L,30min,98.31%.SNE、SNE,:,99.63%99.82%,.Fenton,40mg/L、200mg/L3803,,　Fenton(3).:,,.2　20mg/LSNEpHFeSO4·7H2O/(mg·L-1)H2O2/(ml·L-1)/minA0A/%134004400.01398.16232006300.04893.22333002200.01498.02442004200.03794.77543006400.7080.03894.63644002300.01298.31753004300.02396.75854006200.03295.48952002400.01597.883　/(mg·L-1)pHFeSO4·7H2O/(mg·L-1)/minA0A/%SNE204400300.7080.01298.31SNE404400300.008-SNE2004400300.009-SNE204400300.8020.00399.63SNE404400300.005-SNE2004400300.004-SNE204400300.5660.00199.82SNE404400300.003-SNE2004400300.003-3.2.2　实际印染废水最佳操作条件的筛选研究　(1)5,Fenton,425nm,:;50.592,0.058,90.20%;pH、FeSO4·7H2OH2O2,pH,R=9.8.(2)Fenton,,0.125,,,,RFeSO4·7H2O,R=0.483.3.3　CODFentonCOD,COD.4,COD13000mg/L,Fenton,,COD1000mg/L,COD91.88%,.4　(1),Fenton:pH=4.0,FeSO4·7H2O、30%H2O2400mg/L2ml/L,30min;90%.(2),Fenton;,H2O2,,pH、Fe2+H2O28125.4　CODCOD/(mg·L-1)COD/(mg·L-1)COD/%113727105292.34212364106691.38313126106291.9113073106091.88　　(3)Fenton,91.88%COD.,.　　　:[1]　李勇,吕松,朱素芳.Fenton试剂处理活性艳红印染废水的实验研究[J].环境科学与技术,2008,31(3):88-90.[2]　鲁璐,刘汉湖.Fenton试剂预处理实际印染废水的实验研究[J].环境科学与管理,2008,33(3):89-92.[3]　李风亭,陆雪非,张冰如.印染废水脱色方法[J].水处理技术,2003,29(1):12-14.[4]　陈文松,韦朝海.Fenton氧化-混凝法处理印染废水的研究[J].工业水处理,2004,24(4):399-411.[5]　李绍锋,张秀忠,张德明,等.Fenton试剂氧化降解活性染料的试验研究[J].给水排水,2002,28(3):46-49.[6]　陈传好,谢波,任源,等.Fenton试剂处理废水中各影响因子的作用机制[J].环境科学,2000,21(3):93-96.[7]　YunWhanKang,Kyung-YubHwang.EffectsofreactionconditionsontheoxidationefficiencyintheFentonprocess[J].WaterResearch,2000,34(10):2786-2790.[8]　IpekGulkaya,SurucuGulermanA,DilekFilizB.ImportanceofH2O2/Fe2+ratioinFenton'streat-mentofacarpetdyeingwastewater[J].JournalofHazardousMaterials,2006,136(3):763-769.ResearchonProcessingReactiveDyeWastewaterbyFentonOxidizingLIJia-liang1,ZHANGWan-wei2,WANGHong-guo3(1.DepartmentofUrbanandEnvironmentalScience,BinzhouUniversity,Binzhou256603,China;2.HuafangIncorporatedLimitedCompanyofShandongProvince,Binzhou256600,China;3.DepartmentofLifeScience,BinzhouUniversity,Binzhou256603,China)Abstract:Aimingattheproblemofdecolorizingdyeingwastewater,orthogonalexperimentswerecarriedouttodeterminetheoptimumconditionsofdecolorizingandCODremovalofthreekindsofmon-omersimulatedactivedyeingwastewater(activedyered,blueandblack)andtheactualfactorydyeingwastewater.TheresultsshowedthatthechromaticityremovalrateofFentonoxidationexceeds90%,theoptimumoperatingconditionswere:theinitialpHofwastewaterispH=4,theadditiveamountofH2O2is400mg/L,andthereactiontimeis30min.Underoptimumconditions,theCODofactualdyeingwastewaterwasremovedefficientlywiththeremovalrateof91.88%.Keywords:reactivedyeingwastewater;Fenton-oxidation;decoloration(责任编辑:贾晶晶)82