AAO工艺全流程节能途径与对策

WATERPURIFICATIONTECHNOLOGYVol.28,No.6,2009December25th,2009。A/A/O。，A/A/O。，A/A/O，，A/A/O，、，。A/A/O（A），，，：，，；，，，；，。1A/A/O1，2，2，3，4（1.，046000；2.，100124；3.，100044；4.，201103）A/A/O。，，。A/A/O，，。，，。，，。A/A/O：X703.1：A：1009-0177（2009）06-0039-06StrategyandApproachforEnergySavinginTotalProcedureofA/A/OWastewaterTreatmentProcessesLUXiao-bo1,WANGJia-wei1,GANYi-ping1,WANGHui-zhen3,FANYue-feng4(1.ChangzhiWaterworksCompany,Changzhi046000,China;2.BeijingDrainageGroup,Beijing100124,China;3.BeijingInstituteofCivilEngineeringandArchitecture,Beijing100044,China;4.ShanghaiHCSystem,Shanghai201103,China)AbstractA/A/Oprocessisappliedwidelyinmunicipalwastewatertreatmentplants,whichattributetoitsgoodperformancefornutrientremoval.However,thedesignparameterofA/A/Oprocessismainlyfromexperiencesbasedonstableflowrate.Sothedesignparameterisgreaterthanrequirementinfact,whichcontributestoenergywaste.Inthisstudy,basedonthecharacteristicofA/A/Oprocessthehydrauliclossofwholeflowlinewasinvestigated,andthedesignofliftingpumpstationwasoptimizedfirstly.Secondly,theaccuracycontrolschemefordissolvedoxygenandeffluentammonianitrogenwasproposedtosaveenergyofcentrifugalblowers,whichisthegreatestproportionofenergyconsumption.Atlast,theenergyconsumptionforreturningactivatedsludgeflowwasdecreasedwiththestatepointanalysis,whichimprovedtheoperationofsecondarysedimentationtankatthesametime.KeywordsA/A/Oprocessliftingpumpdissolvedoxygenaccuracycontrolstatepointreturnactivatedsludge[]2009-09-13[]：A2/O，2006BAC19B01[]（1963-），，（，10/，A2O，），。[]，E-mail:[e-mail]。!!!!!!!!!!!!!!!!!!!!2009，28（6）：39-43,57WaterPurificationTechnology39--Vol.28,No.6,2009。，，，。A、、1。1，，59%（）。23%。A/A/O，，。：、、、、、、。2，62%，、32%。，。2，，1：W=ρgQH1000η1·η2·t（1）：W—，kW·h；ρ—，1000kg/m3；g—，9.81m/s2；Q—，m3/s；H—，m；η1—；η2—；t—，h。1，，H。，。，，1。A2008（2），1～6，，，0.0573kW·h/m3。，，。，，。1［1］Tab.1Designvaluesofhydrauliclossfordifferentfacilities/cm/cm10～25270～28010～25450～47520～4010～3040～5010～3050～6025～5010～2050～15022008Tab.2MonthlyenergyconsumptionandliftedwastewatervolumesfromJanuarytoJunein2008123456/(103kW·h-1)750.92700.01869.89860.27895.86895.25828.7/103m313197.1911974.0315121.4814967.3015631.7415504.1414587.9/（kW·h·m-3）0.05690.05850.05750.05750.05730.05770.05731Fig.1DistributionofenergyconsumptioninatypicalWWTP2Fig.2Distributionofenergyconsumptionforwastewatertreatmentsubsystem，，，.A/A/O40--WATERPURIFICATIONTECHNOLOGYVol.28,No.6,2009December25th,2009。，。，，，80%。，，。，。，，，。，A。，，，。，，。。ARTSHydraulics；，FLUENT。，40.536m，42.500m，1.964m，3。，1302×103kW·h，79.4（A0.61/kW·h）。3Fig.3Altitudechartofwaterlevelaccordingtooptimizedmodel，，，，。，A42，2008η150%。η77.3%，，，。A，，10%。11m，，11，11m。0.26m，2900.18m，0.5m。，A12m，（15m）3m。，，。362%，。，、、A/A/O，、。，、、、、。A/A/O，，。4。41--Vol.28,No.6,2009：“++”：、CODCr、、、、、、pH、，、。，，，。：，。，。：，，，。：，。，，，，，，，。，，，。，，，，。H（5），，，（6）。，，，，，G，1.62×104m3/h。H，G，1.08×104m3/h。，，33%。，，（7）。，62%，20.5%，魻nnerth10%～30%[2]。4Fig.4Sketchmapofcontrolsystemforsmartaeration，，，.A/A/O42--WATERPURIFICATIONTECHNOLOGYVol.28,No.6,2009December25th,20094，，，，，。，，，。，（8）、，，[3-4]。60%、100%，，。9，60%100%，。，100%，，60%，，，SS。，，SS12mg/L，，。5A/A/O，，、、。62%，、32%。A/A/O，，、。ARTSHydraulicsFLUENT（57）5HFig.5VariationofDOinHtankwithorwithoutcontrol6HGFig.6ComparisonofairflowrateinHtankwithorwithoutcontrol7Fig.7Relationbetweenopeningdegreeofoutletleafandelectricalcurrentofelectromotor8Fig.8Statepointofsecondarysedimentationtank9Fig.9Influenceofdifferentreturnsludgeratioonstatepoint43--WATERPURIFICATIONTECHNOLOGYVol.28,No.6,2009December25th,2009（43），1.964m。，，A3m。，DO---，。，20%～40%，，10%～20%。，SS，，。[1].（）.,:425-426.[2]T.B.魻nnerth,M.K.Nielsen,C.Stamer.Advancedcomputercontrolbasedonrealandsoftwaresensors[J].WaterScienceandTechnology,1996,33(1):237-245.[3]G.AEkama,PMarais.Assessingtheapplicabilityofthe1Dfluxtheorytofull-scalesecondarysettlingtankdesignwitha2Dhydrodynamicmodel[J].WaterResearch,2004,38(3):495-505.[4]JRMessenger,JCSmith,MJTetreault.TheuseofdynamicBNRandtwo-dimensionalclarifiermodelingtoinvestigatenitrogenremovalateasterntreatmentplant,Melbourne,Australia[J].WaterScienceandTechnology,39(6):89-96.5aFig.5Effectofinitialchlorophyll-aconcentrationonmagnetizationoperation，。a700μg/L，，27%。，a，。，，，a。3（1），60%，。（2），a.3.78m/s，360min，。（3）、，，，，。[1]PaerlHW..Assessingandmanagingnutrient-enhancedeutrophi-cationinestuarineandcoastalwaters:Interactiveeffectsofhu-manandclimaticperturbations[J].EcologicalEngineering,2006,26(1):40-54.[2],.[J].,2009,27(1):53-57.[3],,,.[J].,2007,30(7):98-100.[4],,,.[J],,2007,1(3):66-69.[5],,.[J],,2008,19(4):73-75.[6],,,.[J].,2006,25(1):55-57.[7]HolyszL,SzczesA,ChibowskiE.Effectsofastaticmagneticfieldonwaterandelectrolytesolutions[J].JournalofColloidandInterfaceScience,2007,316(2):996-1002.[8],,,.SBR[J].,2007,28(6):711-714.[9]RocherV,SiauqueJ-M,CabuilV,etal.Removaloforganicdyesbymagneticalginatebeads[J].WaterResearch,2008,42(4-5):1290-1298.[10]KitazawaK,IkezoeY,UetakeH,etal.Magneticfieldeffectsonwater,airandpowders[J],PhysicaB:CondensedMatter,2001,294-295:709-714.[11],.[J].(),2006,19(2):125-129.[12].（）[M].:,2002.57--