臭氧氧化二级出水有机物可生化性研究

31220102ENVIRONMENTALSCIENCEVol.31,No.2Feb.,20101,2,2,2,13,2,2(11,100124;21,100063):3,.,246810mg/L.,UV254SUVA(UV254/DOC),6mg/L,UV254SUVA5414%5616%;BOD5/CODBDOCBDOC/DOC30%360%360%,;,,.:;;;:X70311:A:025023301(2010)0220363205:2009203231;:2009208212:(D07050601500000);(PXM200820142042050843):(1975),,,,E2mail:[e-mail]3,E2mail:[e-mail]odegradabilityofSecondaryEffluentTreatedbyOzonationYANGAn2ming1,2,CHANGJiang2,GANYi2ping2,PENGYong2zhen1,ZHANGShu2jun2,MENGChun2lin2(1.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentalRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China;2.BeijingDrainageGroupCo.Ltd.,Beijing100063,China)Abstract:ThesecondaryeffluentofthreeWWTPswastreatedbyozonationtoinvestigateorganicbiodegradabilityenhancement.Thebulkexperimentalmethodwasused.Ozoneaddingdosagewascontrolledtobe2,4,6,8,10mg/Lbyadjustingtheaddingtime.Resultsshowed,UV254andSUVA(UV254/DOC)decreasedwiththeincreasingoftheozonedosage.Whenozoneaddingdosagewas6mg/L,UV254andSUVAdecreasedabout5414%and5616%respectively;whileBOD5/COD,BDOCandBDOC/DOCwereimprovedabove30%,360%and360%respectively.Itcouldbeconcludedthatsuitableozonationcouldimprovethebiodegradationoftheorganicsubstancesinthesecondaryeffluent.Theorganicsubstancewasanalyzedbytheexcitation2emissionmatrix(EEM)toinvestigatethevariationregularityoforganicmatterchangesoftheozonedandnon2ozonedsecondaryeffluent.Themainorganicsubstancesofthesecondaryeffluentintheplantwerearomaticproteinlikesubstancesandhumicsubstances,ozonecouldsignificantlyremovethesetypesoforganicsubstance.Keywords:ozone;secondaryeffluent;organicsubstance;excitation2emissionmatrix(EEM).[13].()[48],,.,,[916].[1316],.,,.[17,18],.,,,[19].(excitation2emissionmatrix,EEM)31,(excitationwavelength,ex)(emissionwavelength,em),[1718,20].3,..11111,.OZ23G,,350mL/min,410mg/L,KI.,5L,,,,,,246810mg/L.1Fig.1Schematicdiagramofozoneprocess11211211HITACHIF27000,150W,(PMT)400V,,10nm,120nm/min.200400nm260500nm,10nm.0145m.Origin,.11212BDOC0145m.:500mL,.,150200mL,600mL,500mL500mL.TOC,DOC0(DOC);2m,5mL500mL,,,2028d.28d,0145mTOC(),DOC28,[21],BDOC=DOC28-DOC0.11213(DOC)AnalytikjenaMultiN/T2100TOC/TN/,0145m,;CODCOD(5B23(C)COD);BOD;UV254Thermal2r(,).221121111UV254,.UV254.2UV254,,UV254,254nm,(),().UV254.6mg/L,UV254,ABC36718%6814%5414%.21112SUVA(SUVA),UV254/DOCDOC,(NOM).SUVA,.3A4632:2UV254Fig.2InfluenceofozonedosagetotheUV254BC3SUVA.,SUVA,6mg/L,ABC3SUVA,SUVA6718%6814%5616%,.3SUVAFig.3InfluenceofozonedosagetotheSUVA21113BOD5/COD4BOD5/COD.BOD5/COD,6mg/L,ABC3BOD5/COD216%2917%320%.BBOD5/COD,B,BBOD5/COD2718%,AC8%6%,B,AC.BOD5/COD,,,ABOD5/COD,BCBOD5/COD.BOD5/COD,,.BC6mg/L8mg/L,BOD5/COD,.4BOD5/CODFig.4InfluenceofozonedosagetotheBOD5/COD21114BDOC5ABDOCBDOC/DOC.(BDOC).BDOCBDOC/DOC,0mg/L10mg/L,BDOC0162mg/L2190mg/L,BDOC/DOC814%39%,,.212A6,Flu1Flu55[2224],Flu1(tryptophan2like),Flu2(solublemicrobialbyproduct2like),Flu3,Flu4Flu5(visiblefulvic2likeUVfulvic2like).563315Fig.5InfluenceofozonedosagetotheBDOC,/(Ex/Em)(FI),1.6Flu3Flu4Flu5,1Flu3Flu4,Flu5.,.6Fig.63DEEMcontoursforsecondaryeffluentbeforeozonation1/mg?L-1Table1Fluorescenceintensityofthefluorescentsubstancesintheozonationofsecondaryeffluent/mg?L-1/mg?L-1Flu1Flu3Flu4Flu5Ex/EmFI/nmEx/EmFI/nmEx/EmFI/nmEx/EmFI/nm0280/35046814250/43043919320/410355162280/35046117250/43044116320/410352104230/35015016280/34017617250/44021717330420148186230/3407016280/31012415250/45014918330/420100158270/3008816250/4406217320/410491210280/3109012250/4305711310/350451674mg/L.,,Flu3()FI6213%(46814nm17617nm),Flu4()FI5015%(43919nm21717nm),Flu5()FI5812%(35516nm14818nm).8.,8mg/L,,.,,UV254.(fluorescenceindex,f450/f500)NOM.f450/f50074mg/LFig.73DEEMcontoursforsecondaryeffluentofozonedosageof4mg/LEx=370nm,450nm5006632:nm.DOMDOM2f450/f500114119[25].f450/f5002104,.,f450/f500[25].8Fig.8Relationshipbetweenozonedosageandthefluorescenceintensityofthefluorescencepeak3(1)BDOC,3UV254SUVABOD5/CODBDOCBDOC/DOC,.(2),,,.:[1].[J].,2001,17(3):61264.[2]PetalaM,TsiridisV,SamarasP,etal.Wastewaterreclamationbyadvancedtreatmentofsecondaryeffluents[J].Desalination,2006,195:1092118.[3]ZhangR,VigneswaranS,NgoHH,etal.Magneticionexchange(MIEX)resinasapre2treatmenttoasubmergedmembranesysteminthetreatmentofbiologicallytreatedwastewater[J].Desalination,2006,192:2962302.[4]HamodaMF,AI2GhusainI,Al2MutairiNZ.Sandfiltrationofwastewaterfortertiarytreatmentandwaterreuse[J].Desalination,2004,164:2032211.[5]LeeCW,BaeSD,HanSW,etal.Applicationofultrafiltrationhybridmembraneprocessesforreuseofsecondaryeffluent[J].Desalination,2007,202:2392246.[6]ArvaloJ,GarralnG,PlazaF,etal.Wastewaterreuseaftertreatmentbytertiaryultrafiltrationandamembranebioreactor(MBR):acomparativestudy[J].Desalination,2009,243:32241.[7]RodriguezJJ,JimnezV,TrujilloO,etal.Reuseofreverseosmosismembranesinadvancedwastewatertreatment[J].Desalination,2002,50:2192225.[8]ChooKH,KangSK.Removalofresidualorganicmatterfromsecondaryeffluentbyironoxidesadsorption[J].Desalination,2003,154:1392146.[9],,,.2[J].,2008,24(7):42245.[10],,.2[J].,2008,37(8):9172920.[11],,,.2[J].