臭氧生物活性炭组合工艺中最佳臭氧投加剂量的确定孔令宇

-,,(,　100084):,.,,.,2～8mg/LAOC-P17,AOC-NOXBDOC20.9%～85.5%,42.1%～158.2%21.4%～84.4%.3mg/L,AOCBDOC,3mg/L.(BAC)AOC()50μg/L,35.9～46.6μg/L,.:-;;;;;:X520.5;R123　:A　:0250-3301(2006)07-1345-03:2005-04-13;:2005-05-31:(1976～),,,,E-mail:[e-mail]lOzoneDoseinO3-BACKONGLing-yu,ZHANGXiao-jian,WANGZhan-sheng(DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Theozonationcanincreasebiodegradabilityofwaterandthebiofilterafterozonationcanincreasebiostabilityofwater.Theresultshowsthatwithdifferentdosesofozonebetween2and8mg/L,ozonationcanincreaseAOC-P17,AOC-NOXandBDOCby20.9%～85.5%,42.1%～158.2%and21.4%～84.4%,respectively.TheoptimumozonedoseformaximumAOCandBDOCformationis3mg/L.Inthetest,theAOCofeffluentfromBACislowerthan50μg/L(acetate-C).TheAOCconcentrationisbetween35.9and46.6μg/L(acetate-C),andtheeffluentbelongstobiostability.Keywords:O3-BAC;ozonation;ozonedoses;biostability;AOC;BDOC　　.,.,(assimilableorganiccarbon,AOC)(biodegradabledissolvedorganiccarbon,BDOC)2.,AOC()10～20μg/L,AOC()50～100μg/L[1,2];BDOC0.2～0.25mg/L[3].-[4～7].,-.1　1.1　-,,.-,.120mm,3.5m,2.5m,18.75min;100mm,3m,1.5m,8m/h,(EBCT)11.25min.1.1.2　AOCBDOCAOCBDOCAOCBDOC,.AOC[8]:P17(FluorescentPseudomonads)1NOX,,,2,.P17NOX,AOC.　　BDOC[8]:FriasRibas,27720067　　　　　　ENVIRONMENTALSCIENCEVol.27,No.7Jul.,2006DOI:10.13227/j.hjkx.2006.07.0161　O3-BACFig.1　FlowchartofO3-BACprocess(),DOC,DOC,DOCBDOC.2　2.1　AOCBDOC2,32～8mg/L,AOCBDOC.2,AOC-P17AOC-NOX,,AOC-NOXAOC-P17.,NOX.　　AOC-P17AOC-NOX.2,3mg/L,2AOC,AOC.,AOC.Vahala[9],O3/TOC0.3～0.5,AOC,AOC,,CO2.3,BDOC,,.,BDOC,,.2mg/L3mg/L,BDOC;3mg/L6mg/L,BDOC;8mg/LBDOC.ΔBDOC2,BDOC.2～3mg/L,ΔBDOC∶ΔO3=0.2;6～8mg/L,ΔBDOC∶O3=0.1.,,.2.2　AOC-P17AOC-NOX2　AOCFig.2　EffectofozonedosageonformationofAOC　　4,5O3-BACAOCBDOC.AOC100μg/L(,),192μg/L,BDOC0.25mg/L,0.64mg/L,.,AOCBDOC.AOCBDOC.BACAOC50μg/L,33.5～46.6μg/L;BDOC0.23～0.31mg/L,BAC.2.3　4,5,BACAOCBDOCBACAOCBDOC.(、1346　　　　　　27BDOC3　BDOCFig.3　EffectofozonedosageonformationofBDOC4　O3-BACAOCFig.4　EffectofdifferentozonedoseontheeffluenceAOCfromO3-BAC5　O3-BACBDOCFig.5　EffectofdifferentdoseoneffluenceBDOCfromO3-BAC、),.,,.,.,-,,.2,3,3mg/L,,AOCBDOC.,3mg/L.3　　　(1),AOCBDOC.(2～8mg/L),AOC-P17,AOC-NOXBDOC20.9%～85.5%,42.1%～158.2%21.4%～84.4%.(2)AOCBDOC,3mg/L,,,O38mg/L,.,AOC-P17AOC-NOX.(3)BACAOCBDOC.,BACAOC33.5～46.6μg/L,BDOC0.23～0.31mg/L,.-3mg/L.:[1]LeChevallierMW,BeckerWC,SchorrP,etal.Evaluatingtheperformanceofbiologicallyactiverapidflters[J].J.AWWA,1992,84(4):136～146.[2]LeChevallierMW,ShawNE,KaplanLA,etal.DevelopmentofarapidAOCmethodforwater[J].Appl.Environ.Microbiol.,1993,59(5):1526～1531.[3]DukanS,LeviY,etal.Dynamicmodellingofbacterialgrowthindrinkingwaternetworks[J].Wat.Res.,1996,30(9):1991～2002.[4]ChristianV,KimberlyB.Impactofenhancedandoptimizedcoagulationonremovaloforganicmatteranditsbiodegradablefractionindrinkingwater[J].Wat.Res.,2000,34(12):3247～3255.[5]IsabelCE,SeungkwanH,AndrewAR.Removalofassimilableorganiccarbonandbiodegradabledissolvedorganiccarbonbyreverseosmosisandnanofiltrationmembranes[J].JournalofMembraneScience,2000,17:1～17.[6]LinChi-Kang,etal.EnhancedbiodegradationofpetrochemicalwastewaterusingozonationandBACadvancedtreatmentsystem[J].Wat.Res.,2001,35(3):699～704.[7]HuckPM,FedorakPM.Formationandremovalofassimilableorganiccarbonduringbiologicaltreatment[J].J.AWWA,1991,83(12):69～80[8],.[M].:,1999.237～241.[9]VahalaR,etal.EvaluatingozonedoseforAOCremovalintwo-stepGACfilters[J].Wat.Sci.Tech.,1998,39(9):113～120.13477