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74Vol．7No．420134ChineseJournalofEnvironmentalEngineeringApr．2013A/O11*111231．4000452．1000363．400042A/O、TN。4∶3∶35∶3∶26∶3∶1COD、30mg/L、1mg/L。5∶3∶2。5∶3∶2TN5．7mg/L82．9%6∶3∶14∶3∶3。。A/OX703A1673-9108201304-1430-05Influenceofdifferentinfluentflowdistributionratiosonbiologicalnitrogenandcarbonremovalbymulti-stagesA/OprocessWangMin1ZhangZhi1ChenJieyun1FanGongduan1JinKe1LiangPeng2HuLing31．KeyLaboratoryofThreeReserviorRegion’sEco-EnviromentMinistryofEducationChongqingUniversityChongqing400045China2．BuildingDesignandResearchInstituteoftheGeneralLogisticsDepartmentoftheChinesePeople’sLiberationArmyBeijing100036China3．SinopharmChongqingPharmaceuticalandMedicalIndustryDesignInstituteChongqing400022ChinaAbstractThree-stagestep-feedA/Osystemwasappliedtotreatsewagewithlowcarbonsourceexperi-mentswerecarriedouttoinvestigatetheeffectofdifferentinfluentflowdistributionratiosonorganicmatternitri-ficationanddenitrificationremovalefficiency．Itwasshowedthatdifferentflowdistributionratios4∶3∶35∶3∶26∶3∶1hadalittleeffectonorganicmatterremovalandnitrificationefficiencytheeffluentofCODNH3-Nwerebelow30mg/Land1mg/Lrespectively．Butdenitrificationefficiencywasconsiderablyaffectedbythedifferentflowdistributionratios．Whenflowdistributionratiowas5∶3∶2carbonsourceofsewagewaseffec-tiveusedandthesystemachievedtheoptimumefficiencyofdenitrification．Whenflowdistributionratiowas5∶3∶2theeffluentTNwas5．7mg/Lwith82．9%removalefficiencywhichwasbetterthantheflowdistributionratiosof6∶3∶1and4∶3∶3．Insummarythestep-feedsystemissuperiortosinglepointfeedsystemintheaspectofeffectiveusageofcarbonsourcesandenergysaving．Keywordsflowdistributionratiosstep-feedA/Oprocessbiologicalnitrogenremovallowcarbon2012－02－232012－05－181982～、、。E-maillanyi2008@163．com*E-mailzhangzhicq@126．comA/O12。、、、3-5．、pH。。C/NTN、TP6。A/O、4A/O789。100%～140%n＞510。42～4。11。A/O、、、。A/O。A/O12。C/N6A/O。64∶3∶35∶3∶26∶3∶1、/TN。11．1A/O1。A/O××720mm×660mm×1000mm30cm330LA/OAOAO1∶2。A/O8h。500mm60°850mm90L、。。1A/OFig．1SchematicdiagramofmultipleA/Oreactorsystem1．2B。COD190～250mg/LNH3-N29～35mg/LTN32～40mg/LNO3-N、NO2-NpH6．8～8．2COD/TN6。1．3CODTNNH3-NNO3-NNO2-NN-1--。1．4A/O3。1∶2MLSS2000～2500mg/LVSS/MLSS0．75O1、O2O30．4～0．6mg/L0．6～0．8mg/L1．0～1．5mg/L100%。20118—1120～25℃HRT8h。34∶3∶35∶3∶26∶3∶13、DO、ORPpH。22．113417COD28hCOD200～240mg/LCOD0．30～0．36kgCOD/kgMLSS·dCOD30mg/LCOD85%～94%90%COD《》GB18918-2002ACOD。CODCOD13。2CODFig．2VariationofCODalongthereactorunderdifferentflowdistributionratios2．23NH3-N30～35mg/LNO3-N0．5～1．0mg/L。NH3-N0．2～0．5mg/L3NH3-NFig．3VariationofNH3-Nalongthereactorunderdifferentflowdistributionratios98%C/N6NH3-N。6∶3∶11NH3-N12mg/L23NH3-N。COD。。0．13～0．15kgNH3-N/kgMLVSS·d0．09～0．11kgNH3-N/kgMLVSS·d。2．3NO2-NNO2-N0．5mg/LNO3-N。NO3-NN2。44∶3∶314．0mg/L23．0mg/L330%5．2mg/L9．0mg/L。4NO3-NFig．4VariationofNO3-Nalongthereactorunderdifferentflowdistributionratios5∶3∶220%34．0mg/L。6∶3∶10．7mg/L123414A/O90%。NO3-NNO3-N1、2NO3-NNO3-N12．0mg/L。2．4TNC/N6A/OTN5TN。4∶3∶3TN70．7%TN10．2mg/L5∶3∶2TN82．9%TN5．7mg/L6∶3∶1TN59．9%TN13．2mg/L。5TNFig．5VariationofTNalongthereactorunderdifferentflowdistributionratiosA/O3ηmax=α+β+r1+rα1β2r。4∶3∶385%5∶3∶290%6∶3∶195%。、DO、、、。12、36。DODO。。5SND。DOSND14-16。DOC/N。A/ODO17-21。SNDA/O。A/O65∶3∶2TN82．9%。3TNA。31。2TN63TNA。5∶3∶2TN5．7mg/L82．9%6∶3∶14∶3∶3。320～25℃。1NadjaHvalaMarioZecMilenkoRosetal．Designofa33417sequencingbatchreactorsequencewithaninputloadparti-tioninanenvironment．WaterEnvironmentResearch2001733/4146-1542ShigeoFujii．Thecreticalanalysisonnitrogenremovalofthestep-feedanoxic-oxicactivatedsludgeprocessanditsapplicationfortheoptimaloperation．WaterScienceandTechnology1996341/2459-4663．．200319432-36QiuShenchuDingTangtang．Stepfeedbiologicalnutrientremovalprocesses．ChinaWater＆Wastewater200319432-36inChinese4．．2007297533-536ZhangShengZhuJianrong．Basedondifferentmatrixen-hancedbiologicalphosphorusremovalsystemofbiochemicalreactionmechanism．EnvironmentalPollution＆Control2007297533-536inChinese5．．200725184-88WangRongbinLiJun．Progressofbiologicalphosphorusremovaltechnology．EnvironmentalEngineering200725184-88inChinese6OlssonG．NielsenM．YuanZ．etal．InstrumentationControlandAutomationinWastewaterSystems．LondonIWAPublishing20057ZhuG．B．PengY．Z．MaB．etal．Optimizationofan-oxic/oxicstepfeedingactivatedsludgeprocesswithfuzzycontrolmodelforimprovingnitrogenremoval．ChemicalEngineeringJournal20091511/3195-2018FrigonJ．C．BretonJ．BruneauT．etal．Thetreatmentofcheesewheywastewaterbysequentialanaerobicandaer-obicstepsinasingledigesteratpilotscale．BioresourceTechnology2009100184156-41639．．201261120-124ZhouJianZhangXinyuGanLishaetal．Studyoninflu-encingfactorsofnitrogenremovalbyastep-feedmulti-stagebiofilmreactor．ChineseJournalofEnvironmentalEngi-neering201261120-124inChinese10JohnsonB．R．GoodwinS．DaiggerG．T．etal．Acomparisonbetweenthetheoryandrealityoffull-scalestep-feednutrientremovalsystems．WaterScienceandTechnology20055210-11587-59611GorgunE．ArtanE．OrhonD．etal．Evaluationofni-trogenremovalbystepfeedinginlargetreatmentplants．WaterScienceandTechnology1996341-2253-26012．AO．201137634-37ShiFengLiuShengjunMaBingyongetal．ApplicationofmultilevelA/Oprocessinwastewatertreatme