供氧方式对SBR法硝化过程控制的影响曾薇

SBR1)曾　薇　王淑莹　彭永臻　陈　韬2)(,,100022)　　　　　　SBR.:,DOpH,ORP.DO,DO;pH,,,pH;ORP,,,,;DO,.DO,,,pH,SBR.:SBR,DO,ORP,pH,,.　　SBR,,.:DO.,,,.DO,,DO,,[1,2].,DO,ORPpH,,[3—6].,,DO,ORPpH,SBR.1　,、,,NaOHpH6—7.SBR,,,,.1.70cm,30cm,38L.,　　1)(50138010).(8002005).2).21　62002　　11　　　ENVIRONMENTALCHEMISTRYVol.21,No.6　November　2002　DO;30℃;DO,ORPpH,COD,NH4-N,NO2-N,NO3-NMLSS.1　SBR1.;2.;3.;4.;5.ORP;6.;7.;8.;9.;10.;11.;12.;13.Fig.1　SBRexperimentandcontrolsystem2　2.1　SBR32mg·l-1,COD130mg·l-1,SBR0.4m3·h-1,0.6m3·h-1,SBR2.(MLSS)3000mg·l-1.,NO3-N1mg·l-1,2.DO,,,,DO;pH.,pH(2(b)).ORP,,(2(c)).,DO,;pH.,DOpH,.,,.,DOpHSBR(2(a,b)).2.2　DOSBRCOD190mg·l-1,52mg·l-1.DO.DO0.7mg·l-1,1.8mg·l-12.6mg·l-1.MLSS3000mg·l-1,30℃.,NO3-N.2.pH,.NH4-N0mg·l-1,pH(B),,,CO2,pH(2(d)).572　　　　　　　　　　　　　　　　　　　　21DO.ORP,,.DO,ORP,DOORP(2(f))DO,DO0.7mg·l-11.8mg·l-1,0.12kgNH4-N/(kgMLSS·d)0.25kgNH4-N/(kgMLSS·d),50%,pH.DO1.8mg·l-12.6mg·l-1,.DO2mg·l-1,DO,DO.,DO.DO2mg·l-1,DO.2　SBRFig.2　DO,ORPandpHvariationsinthenitrificationofSBRprocess:μN=μmaxDODO+KO2,μN,d-1;μmax,d-1;DO,mg·l-1;KO2.KO20.2—0.4.DO0—2mg·l-1,DOμN.DO2mg·l-1,DO,573　6　　　　　　　　　:SBRKO2,μNμmax,DOμN.μN.,DO2mg·l-1,,,.,DO0.7mg·l-11.8mg·l-1,NO2-N35mg·l-145mg·l-1.DONO3-N2mg·l-1.,(2(e)).,DO,DO,,pH,SBR.,,,,DO,.,32mg·l-152mg·l-1,DO2mg·l-1,MLSS3000mg·l-1.,.,.,DO2mg·l-1,0.1—0.15m3·h-1.,,DO,,.,,.(0.1—0.15m3·h-1),,.pH,,pH,,.,30±1℃,.2.12.2,DO,ORPpH,,,.,.,,,,.,,.3　SBR,,,DOpH,.,DOpHSBR;DO,DO,NH4-H0mg,pH,.DO,.DO,.,pH,,pH574　　　　　　　　　　　　　　　　　　　　21,,.,ORP,,.,ORPSBR,,.　　　[1]　,SBR[J].,1993,9(2)∶29—31[2]　JohnAP,SpyrosGP,Real-TimeMonitoringandControlofSequencingBatchReactorsforSecondaryTreatmentofaPoul-tryProcessingWastewater[J].WaterEnvironmentResearch,2000,72(5)∶585—592[3]　Ruey-FangYu,Shu-LiangLiaw,Cheng-NanChangetal.,ApplyingReal-TimeControltoEnhancethePerformanceofNitrogenRemovalintheContinuous-FlowSBRSystem[J].Wat.Sci.Tech.,1998,38(3)∶271—280[4]　OliverJHao,JasonHuang,AlternatingAerobic-AnoxicProcessforNitrogenRemoval:ProcessEvaluation[J].WaterEnvironmentResearch,1996,38(1):83—93[5]　,,,SBR[J]..2000,16(4)∶5—9[6]　HyunookKim,OliverJHao,pHandOxidation-ReductionPotentialControlStrategyforOptimizationofNitrogenRemovalinanAlternatingAerobic-AnoxicSystem[J].WaterEnvironmentResearch,2001,73(1)∶95—1022002423.EFFECTOFOXYGENSUPPLYONNITRIFICATIONCONTROLINSBRPROCESSZENGWei　　WANGShu-ying　　PENGYong-zhen　　CHENTao(CollegeofEnvironmentalandEnergyEngineerign,BeijingPolytechnicUniversity,Beijing,100022)ABSTRACTTheeffectofoxygensupplyonDO,ORPandpHvariationsinthenitrificationofSBRprocesstreatingpetrochemicalindustrywastewaterwasintroducedinthispaper.Thecontrolstrategiesunderdifferentoxygensupplyconditionswerebroughtouttooperatenitrification.Theresultsindicatedthatunderthefixedaerationrate,DOandpHcouldbeusedasthecontrollingparametersofSBRnitrificationduration.ButORPvariationcantindicatetheendofnitrificationobviously.UnderthefixedDO,pHinthenitrificationdecreasedslowlyorstably,thenrosesuddenlyassoonastheni-trificationcompleted.pHcanalsobeusedasthecontrollingparameterofSBRnitrification.ORPwentuprapidlyintheinitialreaction,thenrisingspeedbecameslowerandslower,andtendedtobeconstant.Consequently,ORPvariationcantindicatetheendofnitrificationinSBRobviouslyandindependently.Ontheotherhand,aerationratedecreasedinordertomaintainDOstable.ThedemandedlestaerationrateunderdifferentinfluentconditionissameonlyifMLSSandDOlevelissame.SocorporationbetweenthelestaerationrateandpHcontrolcanmakenitrificationtimecontrolstable.Keywords:SBRprocess,DO,ORP,pH,nitrification,controllingparameter.575　6　　　　　　　　　:SBR