不同曝气量对短程硝化特性的影响吴煌州

42120142JournalofFuzhouUniversityNaturalScienceEditionVol．42No．1Feb．2014．fzu．edu．cnDOI10．7631/issn．1000－2243．2014．01．01611000－2243201401－0161－0611211．3501162．350013SBＲ35±0．1℃、pH8．0～8．4、FA19～35mg·L－124、36、48、60L·h－1．pH“”DO“”95%100%36L·h－136L·h－1．X703．1AEffectofaerationflowontheperformanceofpartialnitrificationinasequencingbatchreactorWUHuang－zhou1QIULing－feng1CHENYi－ming2SUMei－ping11．CollegeofEnvironmentandＲesourcesFuzhouUniversityFuzhouFujian350116China2．FujianProvincialAcademyofEnvironmentalScienceFuzhouFujian350013ChinaAbstractThepartialnitrificationreactorwassuccessfullystartedupwithintwoweeksatahightemper-ature35±0．1℃initialpH8．0～8．4andfreeammonia19～35mg·L－1．Theeffectofaera-tionflow24364860L·h－1ontheperformanceofpartialnitrificationwasinvestigated．Ｒesultsshowedthereal－timecontrolstrategybasedonpHDOdissolvedoxygenandOＲPoxidation－re-ductionpotentialwasaneffectivemethodformonitoringtheendpointofpartialnitrificationtoterminatetheaeration．Nitriteaccumulationshowedtobestableunderdifferentaerationflowswiththeeffluentni-triteaccumulationratioallupto95%and100%ofammoniaremoval．Theammonium－oxidizingreac-tioninSBＲaccordedwithzero－orderreactionkineticsequationandthereactionrateconstantin-creasedwiththeincreaseofaerationflowindicatingthattheaerationflowwasacriticalfactorinachie-vingpartialnitrification．Besideswithincreasingaerationflowthespecificrateconstantofnitrite－producingperaerationamountshowedanearlierraisedandlaterdecreasedstate．Theresultsindicatedthattheaerationflowof36L·h－1representedanimportantreductioninoperationalcosts．Keywordspartialnitrificationaerationfloweconomicevaluationreal－timemonitoring01．2①25%②63%30%～40%③33%～35%④3．nitrite－oxidizingbact[e-mail]、dissolvedoxygenDO、、freeammoniaFA4．DO．Laanbroek5AOB0．2～0．4mg·L－1NOB1．2～1．5mg·L－1DO．628L·h－1DO0．3mg·L－180%5mg·L－1·h－1．715．7L·h－17．96mg·L－1·h－1．．．DO、oxidation－reductionpotentialOＲP、pH．11．11SBＲFig．1SchematicdiagramoftheSBＲreactorsequencingbatchreactorSBＲ1400mm150mm4L．35±0．1℃．3．MLVSS1300mg·L－1．1．21∶2．NH42SO4NaHCO3300mg·L－1NaHCO31800mg·L－1AOBpHHCO－3NH+42∶1．0．3h、、0．5h、0．5h．1．38．N－1－－MLVSSDOWTWoxi330pHOＲPWTWpH3310．22．1AOBNOBAOBNOBNOB．9－1020℃AOBNOB20℃AOBNOBNOB．1128℃．pHAOB7．0～8．511NOB6．0～7．5．FAAOBNOB·261·1．fzu．edu．cn2ESEMFig．2TheESEMimageofthestablepartialnitrificationsludgeNOBAOB．FANOB0．1～10mg·L－1AOB10～150mg·L－1FANOB12－13．35±0．1℃pH8．0～8．4FA19～35mg·L－1AOBNOB．36L·h－1nitriteaccumulationrateNAＲNAＲ=ρNO－2－NρNO－x－N95%．2．2214．ESEM2．2．324、36、48、60L·h－13．3SBＲFig．3TheoperationofSBＲunderdifferentconditions2．3．14．100%NAＲ95%．AOBNOB．．2．3．241．411524L·h－136L·h－10．5136L·h－148L·h－10．1248L··361·42．fzu．edu．cnh－160L·h－10．15．a60L·h－1b48L·h－1c36L·h－1d24L·h－14SBＲFig．4CyclicstudyshowingnitrogentransformationprocessinSBＲunderdifferentaerationflows1Tab．1ＲegressionequationofnitriteproductionL·h－1k/mg·L－1·h－1/g·g－1·d－1/g·g－1·L－124y=25．21x+75．20．990C=C0+25．21t25．210．4651．05036y=38．11x+83．50．986C=C0+38．11t38．110．7041．05948y=42．55x+80．70．987C=C0+42．55t42．550．7860．886460y=48．75x+83．80．994C=C0+48．75t48．750．0380．8132．3．31617．．pH、DO、OＲP6．45pHCO2pHDOOＲP．pHCO2pH“”DODO“”OＲPDO18．pH“”DO“”．·461·1．fzu．edu．cna60L·h－1b48L·h－1c36L·h－1d24L·h－15SBＲDO、OＲPpHFig．5CyclicstudyshowingvariationofDOOＲPandpHinSBＲunderdifferentaerationflows2．3．4136L·h－11．059g·g－1·L－124L·h－11．050g·g－1·L－136L·h－1．4860L·h－10．8860．813g·g－1·L－1．36L·h－1．3135±0．1℃pH8．0～8．4FA19～35mg·L－1NAＲ95%．2．3pH、DOOＲPpH“”DO“”．4．36L/h．1DostaJGaliATBMaceSetal．Operationandmodeldescriptionofasequencingbatchreactortreatingrejectwaterforbio-logicalnitrogenremovalvianitriteJ．BioresourTechnol200798112065－2075．2VerstraeteWPhilipsS．Nitrification－denitrificationprocessesandtechnologiesinnewcontextsJ．EnvironmentalPollution19981028717－726．·561·42．fzu．edu．cn3StrousMHeijnenJJKuenenJGetal．Thesequencingbatchreactorasapowerfultoolforthestudyofslowlygrowinganae-robicammonium－oxidizingmicroorganismsJ．AppliedMicrobiologyandBiotechnology1998505589－596．4．J．20115763－67．5LaanbroekHJGerardsS．CompetitionforlimitingamountsofoxygenbetweenNitrosomanaseuropaeaandNitrobacteriawino-gradskyigrowninmixedcontinuousculturesJ．ArchMicrobiology199315945．6．J．200622930－33．7．SBBＲJ．20123292112－2118．8．M．4．2002．9．SBＲ－J．2003461－4．10．J．200531438－42．11．J．200526163－67．12AnthonisenACLoehrＲCParkasamTBS．InhibitionofnitrificationbyammoniaandnitrousacidJ．JWatPollutControlFed1976485835－852．13FuxCBoehlerMHuberPetal．Biologicaltreatmentofammonium－richwastewaterbypartialnitritationandsubsequentanaerobicammoniumoxidationanammoxinapilotplantJ．JournalofBiotechnology2002993295－306．14．SBＲJ．2009253526－530．15．J．2009301218－221．16．SBＲJ．2004483－88．17．SBＲ－J．2003461－4．18．J．2011311153－56．(责任编辑:杨青)·661·