AO生物脱氮工艺内循环回流和外碳源投加综合控制的优化11fe2c92011ca300a7c390

APO,*,(,100022):APO,COSTPIWA-Benchmark5.,1,,2,,2mgPL,,(,8~12mgPL).,.:;;;APO:X70311:A:0250-3301(2008)05-1203-07:2007-05-31;:2007-07-30:(20060005002);/0(2006BAC19B03);(52005013200702):(1976~),,,,,E-mail:[e-mail]*,E-mail:[e-mail]ecirculationFlowandExternalCarbonDosageIntegratedControlforAPOBiologicalNitrogenRemovalProcessMAYong,PENGYong-zhen,SUNHong-wei(KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentalRecoveryEngineering,BeijingUniversityofTechnology,Beijing100022,China)Abstract:InordertoimproveAPOprocessdenitrificationefficiency,fiveintegratedcontrolstrategiesofnitraterecirculationflowandexternalcarbondosagefordenitrificationwereproposedandevaluatedusingtheCOSTPIWAsimulationBenchmark.ResultsshowthatcontrolstrategyNo.1isthebestintegratedcontrolstrategiesfrombothexternalcarbonconsumption,effluentquality,andthestabilityofcontroller.Itcomprisestwofeedbackcontrolloops:oneistodeterminetheflowrateofexternalcarbonsource,keepingthenitrateconcentrationattheendofanoxiczoneatapre-specifiedlevel2mgPL,andtheotheristoadjusttheflowratesofthenitraterecirculationtokeepthenitrateconcentrationattheendoftheaerobiczoneatapre-specifiedlevelbasedontheeffluentquality(usually8-12mgPL).Thisstrategycanguaranteehighlyeffectiveuseofanoxicdenitrificationcapacityinthelow-loadcondition,andmeeteffluentdischargestandardsthroughcarbondosageinthehigh-loadcondition.Keywords:nitraterecirculationflow;externalcarbondosage;optimization;APOprocess2:.,,.,,.,APO,,.,,,;,,[1,2].,,,,,,,,[3~5];,,,[6].2,,,2,[7,8].2,29520085ENVIRONMENTALSCIENCEVol.29,No.5May,2008,,Yuan[7]Singman[8].1Fig.1Integratedcontrolstrategiesofnitraterecirculationandexternalcarbonaddition1-,5.1[1(a)]:2,(Qcarbon),SNO,ANSNO,AN,SP;(QR),(SNO,AE)SNO,AE,SP.2[1(b)]:2,,SNO,AESNO,AE,SP.,(SNO,AN)SNO,AN,SP.3[1(c)]:3,A,SNO,ANSNO,AN,SP,,,BPP,COD.B,SNO,AESNO,AE,SP,SNO,AE,SP,SNO,AESNO,AE,SP,C.PIDC,SNO,ANSNO,AN,SP,PIDBPP.PIDA,PIDBPIDC,relay.4[1(d)]:2,120429A,,SNO,ANSNO,AN,SP.SNO,AESNO,AE,SP,B;,SNO,AESNO,AE,SPB.B,SNO,AESNO,AE,SP,Brelay.5[1(e)]:2,A,,SNO,AESNO,AE,SP.SNO,AESNO,AE,SP,B;,SNO,AESNO,AE,SPB,B,SNO,ANSNO,AN,SP,Brelay.1PIDAPIDBPIDCPID,(relay),.2COSTPIWA([9]),MatlabPSimulink,BSM15,.BSM1:2KLa240d-1,DO210mgPL,18446m3Pd,385m3Pd,1mgPL[10].COD1200gPL,3m3Pd.(dryinfluent),7d.,.1~2mgPL[11],,,(SNO,AN,SP)2mgPL,(SNO,AE,SP)7mgPL,,BSM1.,[1(c)~(e)](e0)(e015mgPL).32~61~5.,1345,21Fig.2SimulationresultsofcontrolstrategyNo1112055:APO32Fig.3SimulationresultsofcontrolstrategyNo.243Fig.4SimulationresultsofcontrolstrategyNo.37mgPL.5,7mgPL.21122mgPL6166mgPL.134,2mgPL.2,1166mgPL.512062954Fig.5SimulationresultsofcontrolstrategyNo.465Fig.6SimulationresultsofcontrolstrategyNo.52114mgPL,2mgPL,019.2(SNO2),10134.5TN18mgPL,,,12075:APO(5).,(),,COD.(),,.,,.15.,,Benchmark,.,,42%~47%29%~33%.3%~12%,COD,,.,1,34.1,341-Table1Simulationresultsofintegratedcontrolstrategiesandreferencecontrol1)12345EQPkg#d-1PEP(kW#h)#d-1AEP(kW#h)#d-1PSdispPkg#d-1PStotalPkg#d-1Pmg#L-1Pmg#L-1TNPmg#L-1CODPmg#L-1Pm3#d-12)SNO2SNO5SNH/%TN/%2Pmg#L-1Pmg#L-1Pmg#L-15Pmg#L-1Pmg#L-1Pmg#L-1755615571618564018579313579810575319148811395518396516392911380514413916724110741516744213741011741015741310244016267716271518267316267719268819267515292417296215291819292314293418121447106165710471067102153216521792187218421761619311170111451119611194111824812249115491164910349104491070016890177401656016680171218130181461911921113201681916417126000001101195116611991188211411542136311331293105417901111109014017201320145012901340174015701640190010901110155013201400181)7106166710171057100)71919142810681268140)61003148516151455122)01391122014701560160)011511490122013101361)EQ:,PE:,AE:,PSdisp:,PStotal:;2)4mgPLTN18mgPL(3),COD,,.,26(2).2,7mgPL,,.5,7mgPL,,,.,6[413916(kW#h)Pd]..2(564018kgPd),(01774m3Pd).12,34TN.21,12%.COD.120829()1SNO25SNO5(5).,,,1.,COD,.4APO,APO,,.5,COSTPIWABenchmark.1,12%TN31%,,.2,,2mgPL,,(,8~12mgPL).,COD,.:[1]YuanZG,AddrianO,PernilleI.Controlofnitraterecirculationflowinpredenitrificationsystems[J].WatSciTech,2002,45(4P5),29-35.[2],,,.APO[J].,2004,30(2):201-206.[3],,.APO[J].,2004,14(9):106-110.[4]YuanZ,BogaertH,VanrolleghemP.Controlofexternalcarbonadditiontopredenitrifyingsystems[J].JEnvironEngr,1997,123(11):1080-1086.[5]SamuelssonP,CarlssonB.Feedforwardcontroloftheexternalcarbonflowrateinanactivatedsludgeprocess[J].WatSciTech,2001,43(1):115-122.[6]WangXL,PengYZ,MaY,etal.SimulationofIntegratedControlStrategiesforImprovingNitrogenRemovalandReducingExternalCarbonDosage[A].The2ndInternationalConferenceonInstrumentation,ControlandAutomation[C].Korea,Busan,2005.[7]YuanZ,KellerJ.IntegratedControlofNitrateRecirculationandExternalCarbonAdditioninaPre-denitrificationSystem[J].WatSciTech,2003,48(11P12):345-354.[8]SingmanJ.Efficientcontrolofwastewatertreatmentplan-tabenchmarkstudy[D].UppsalaUniversity,1999.[9]CoppJB.Definingasimulationbenchmarkforcontrolstrategies[J].Water,2000,21:44-49.[10]CoppJB.TheCOSTSimulationBenchmark-DescriptionandSimulatorManual[M].OfficeforOfficialPublicationsoftheEuropeanCommunities,Luxembourg,2000.