UVFenton法处理皂素生产废水的动力学研究胡晓莲

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

INDUSTRIALWATER&WASTEWATERVol.40No.2Apr.,2009UV-Fenton,(,411201)[1]。Fenton,,·OH(2.80V)[2-3],·OHCO2H2O。,Fenton,[4],[5]。UV-Fenton。11.1:;U-3010;pHS-25;TOC-VPCH;300W(330nm<λ<380nm)。:H2O2(AR,4.21×105mg/L);(AR),0.1mol/L;(AR);(AR)。1.2。,COD、BOD5SS4391、118364mg/L,1000,pH1~4。1.3H2SO4NaOHpH:(07C286):2008-12-01;:2009-01-04:UV-Fenton。,UV-Fenton。,pH、、H2O2Fe2+COD。COD,,。:UV-Fenton;;:X703.1:A:%1009-2455(2009)02-0034-04KineticsstudyonsaponinwastewatertreatmentbyUV-FentonprocessHUXiao-lian,WANGXi-feng(SchoolofCivilEngineering,HunanUniversityofScienceandTechnology,Xiangtan411201,China)Abstract:Themacro-dynamicmodeldescribingthesaponinwastewatertreatmentbyUV-Fentonprocesswasstudied.Theresultsofthetestshowedthat,thedisposalcurveofCODthroughthesaidprocesstreatmentfollowedthethirdorderkineticequation,withthestatisticalanalysisoftheexperimentaldata,theexperiencemathematicsmodelsimulatingtheeffectsofpHvalue,reactiontime,dosageofH2O2andFe2+concentrationonCODdegradationwassetup.AstherelativitybetweenthekineticsimulantCODconcentrationintheeffluentwaterandtheactualoperationresultwasgood,thesaidtechnologycouldbeusedinactualwastewatertreatment.Keywords:UV-Fenton;saponinwastewater;kineticmodel·34·,FeSO4,,pH,,(10min),H2O2,。pH,pH10,,COD。H2O2:Dth=2×ρ(COD)×34/32(mg/L)。1.4COD(GB11914-89);pHpH;。2,,,(1):η=aX3+bX2+cX+d(1):η———COD,%;X———;a、b、c、d———,。2.1CODpH3.5,H2O21.0Dth,22mL/L,Fe2+m(Fe2+)∶m(H2O2)1∶10,,COD,1。1,,COD。(30min)COD,COD,COD70%,60min,COD94%,,。,,COD。(1)1,COD:f1(x1)=3×10-4x13-6×10-2x12+3.95x1+11.64(2)R2=0.9979:f1(x1)———COD,%;x1———,min。2.2pHCOD60min,,pH,pH,2。2,UV-FentonpH3.5,pH4,COD。pH,。FentonpH3~5,。2,CODpH:f2(x2)=0.76x23-13.23x22+54.3x2+30(3)R2=0.9346:f2(x2)———CODpH,%;x2———pH。2.3H2O2CODpH3.5,Fe2+m(Fe2+)∶m(H2O2)1∶10,60min,H2O2,H2O2COD,3。1CODFig.1RelationshipbetweenCODremovalandreactiontime20406080100/min100806040200COD/%2pHFig.2InfluenceofpHvalueonwastewatertreatmenteffect1234567pH100806040200COD/%,:UV-Fenton·35·INDUSTRIALWATER&WASTEWATERVol.40No.2Apr.,20093,H2O20.75Dth,COD85%,H2O21.0Dth,COD93.7%,COD277mg/L,(GB20425-2006ρ(COD)<300mg/L),H2O21.25Dth,COD2%。H2O2COD。,UV-Fenton,H2O2,H2O2,H2O2。3,CODH2O2:f3(x3)=74.67x33-272x32+331.33x3-40(4)R2=1:f3(x3)———CODH2O2,%;x3———H2O2,Dth。2.4Fe2+Fe2+,,Fe2+COD,4。4,UV-FentonFe2+m(Fe2+)∶m(H2O2)=1∶10。Fe2+1∶10,CODFe2+。Fe2+1∶10,CODFe2+。Fe2+,Fe3+,Fe2+,Fe3+,,·OH,Fe2+,Fe2+H2O2·OH,·OHH2O2O2,H2O2,。Fe2+m(Fe2+)∶m(H2O2)=1∶10。4,CODFe2+:f4(x4)=2.10×104x43-8.87×103x42+1.19×103x4+41.031(5)R2=0.9469:f4(x4)———CODFe2+,%;x4———Fe2+H2O2,。2.5UV-FentonCOD4,,UV-FentonCOD,,(6):η=F(x1,x2,x3,x4)=af1(x1)bf2(x2)cf3(x3)df4(x4)e(6):a、b、c、d、e———。MatlibNLINFIT,1。1,R20.9523,UV-FentonCOD,,4Fe2+Fig.4InfluenceofFe2+concentrationonwastewatertreatmenteffect0.050.100.150.20m(Fe2+)∶m(H2O2)100959085807570COD/%3H2O2Fig.3InfluenceofH2O2doseonwastewatertreatmenteffect0.500.751.001.25H2O2/Dth1009080706050COD/%·36·、pH、H2O2Fe2+4,CODpH,H2O2,Fe2+。3UV-Fenton、pH、H2O2Fe2+。MatlibNLINFIT,UV-Fenton,、pH、H2O2Fe2+COD:η=F(x1,x2,x3,x4)=af1(x1)bf2(x2)cf3(x3)df4(x4)ea=0.0361,b=0.9356,c=1.0491,d=0.9872,e=0.9513。R2=0.9523,,。:[1],,,.[J].,2008,31(1):136-138.[2],,,.Fenton[J].,2007,38(3):36-39.[3],,,.Fenton[J].,2008,39(3):12-16.[4]GoiA,TrapidoM.HydrogenPeroxidePhotolysis,Fentonreagentandphoto-Fentonforthedegradationofnitrophenol:acomparativestudy[J].Chemosphere,2002,46(6):913-922.[5]OtoverosE,LegriniO,MutlerM,etal.Largescaledevelopmentofalight-enhancedFentonreactionbyOptimalexperimentaldesign[J].WaterScienceandTechnology,1997,35(4):223-230.:(1973-),,,,,、,()wxfwk88@163.com。(33)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1UV-FentonTab.1ParametersofexperiencemathematicsmodelofUV-FentonprocesstreatingsaponinwastewaterabcdeR20.03610.93561.04910.98720.95130.9523:PAM,,。10min80.8%,81%,,,20min。,[3]:,。,,PAM,,,。3(1)PAM,,0.3mg/L,100min15min,8cm/min。(2),20min,8mg/L,82%。(3),35min80%,,。,65min,65%。:[1],,,.-[J].,2004,27(8):124-125.[2],,,.Fenton[J].,2007,38(3):36-39.[3],,,.[J].(),2005,31(6):760-764.:(1984-),,,,,()027-61395370()290997710@qq.com。,:UV-Fenton·37·

1 / 4
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功