不同碳源下的间歇曝气反硝化实验研究梁境

63Vol.6,No.320053TechniquesandEquipmentforEnvironmentalPollutionControlMar.2005梁　境　靳俊伟　罗　峰　李小鹏(,400044)　　,、。,,,。4～5gVSS/L,3。0.486gNO3-N/gVSSd。,,,。　　　　　ExpermientalresearchondenitrificationbybatchaerationunderdifferentcarbonsourcesLiangJing　JinJunwei　LuoFeng　LiXiaopeng(KeyLaboratoryfortheExploitationofSouth-WestResourcesandEnvironmentalDisasterControlEngineeringofMinistryofEducation,ChongqingUniversity,Chongqing400044)Abstract　Denitrificationunderhighnitrateconcentrationwasstudiedinafed-batchmode.Methanol,sodi-umacetateandeffluentfromanaerobic(AD)werecomparedasthecarbonsources.Abatchaerationseemstopromotetheestablishmentofdenitrifyingbio-flocksofgoodsettlingcharacteristics.Thebio-flocksproducedinananoxicreactorwereofinferiorsettlingcharacteristics.Bio-flocksatconcentrationsof4to5gVSS/Ldenitrifyeffi-cientlyonallthreecarbonsourcestested.Amaximumnitrateremovalratewasfoundtobe0.486gNO3-N/(gVSSday).Nitriteaccumulatediniatially,butitsconcentrationdecreasedwithtime,andeventuallyreachedzerowhenacetateorADeffluentwereusedascarbonsource.Keywords　denitrification;bio-flocks;fed-batch;batchaeration;anaerobicdigestereffluent:2003-10-26;:2004-01-01:(1973～),,,。E-mail:[e-mail]1　　,。、,[1]。,,、[2,3]。pH,,[4]。,,、;。2　2.1　1,,1L7.5L。2,1,1N2。23±3℃。2.2　:NaNO3(500mg/LN)、(1250mg/L)NaH2PO4Na2HPO4(10mg/LP)。,7.42gVSS/L,VSS/TSS0.81。2L,7.51,(60r/min)23h;,110min10min;,45min,,。2,3　:1　Fig.1　Reatorset-up3,32。,1,23,3。12～3,10d。11,(SVI)(VSS/TSS)。2.3　。12,4～5gVSS/L。NO3-N750mg/L,。CH3OH、CH3COONa3。(VFA)1。CH3OH、CH3COONa。3　3.1　SVIVSS/TSS,,2。(1)。2a,18%,VSS/TSS82%～87%。,,,。SVI61～131。(2)。2b,22%,VSS/TSS78%～84%。,,,。SVISVI,1cm。1　(VFA)Table1　Concentrationofvolatilefattyacidsineffluentafteranaerobicfermentation(mg/L)8176366845157416324406VFA2311011390(mgCaCO3)19.5NH3-N486.7pH5.72。,VSS4～6g/L,8～11g/L,。3.2　1、7113、45。。(1)。,,,(3a、4a5a),(3c、4c5c)。2(3～5)。(2)。3。3d、4d5d,。(3)。30%～50%,C/N2。。,CH3COONa496,H3COONa(3d、4d5d)。(4)。Beccari[5]NO-2-N20～25mg/L,4～5gVSS/L,。,4～5gVSS/L,NO-2-N200mg/L,。,(3b、4b5b)。,,3811。,110hNO-2-N180mg/L(3b),11100mg/L(5e);CH3COONa,,(5e)。3～5ad,,。,。2　VSS/TSSFig.2　SludgevolumeindexandVSS/TSSratiounderanaerobicconditionsandbatchaerationconditions3　1Fig.3　Experimentalresultsofthe1stweek503　:4　7Fig.4　Experimentalresultsofthe7thweek5　11Fig.5　Experimentalresultsofthe11thweek5164　　750mg/L,,、。:(1),,、。(2),。,。(3),,4～5gVSS/L0.486gNO3-N/gVSSd,5.44gNO3-N/gVSSd,90%。[1],,..,2001,21(11):11～13[2],,..,2000,45:2779～2782[3]AdamsC.E.,EckenfelderW.W.Nitrificationdesignap-proachforhighstrengthammoniawastewaters.WaterPoll.Fed.,1997,49:413[4],,,..,2000,26(4):17～20[5]BeccariA.K.,PassinoRamodoriR.andTandoiV.Kineticsofdissimilatorynitratereductioninsuspendedgrowthcul-ture.WaterPol.lContr.Fed.,1983,55(1):58～64(上接第41页)。:—CO—OH,—N、—NH—OH。3　　,;,NO-3,。[1],,..,2002,23(4):428～433[2]LangP.S.,ChingW.K.,WillbergD.M.,eta.lOxidativedegradationof2,4,6-trinitrotoluenebyozoneinanelectro-hydraulicdischargereactor.Environ.Sc.iTechno.l,1998,32:3142～3148[3]WillbergD.M,LangP.S,HochemerR.H,eta.lDegra-dationof4-chlorophenol,3,4-dichloroanilineand2,4,6-trinitrotolueneinanelectrohydraulicdischargereacter.En-viron.Sc.iTechno.l,1996,30:2526～2534[4]TezukaM.,lwasakiM.Liquid-phasereactioninducedbygaseousplasma———Decompositionofbenzoicacidsina-queoussolution.PlasmaIons,1999,1:23～26[5]SharmaA.K.,LockeB.R.,ArceP.,etal.Aprelilminarystudyofpulsedstreamercoronadischargeforthedegrada-tionofphenolinaqueoussolutions.HazardousWasteHazardousMaterial,1993,10(2):209～219[6]Yue-zhongWen,Xuan-zhenJiangandWeipingLiu.Degra-dationof4-chloro-phenolbyhigh-voltagepulsecoronadis-chargescombinedwithozone.PlasmaChemistryandPlas-maProcessing,2002,22(1):175～185[7],.().:,1988.54～55[8],..:,1996.2～3[9],,..,1996,16(1):73～76[10],,..:,1978.179～188,224～23752