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43820188ENVIＲONMENTALSCIENCEANDMANAGEMENTVol.43No.8Aug．20182018－05－051984－。1674－6139201808－0078－04C/N250101C/N－。C/N。DOCODDO。DO0.8～1.0mg/L85%DONO－2－N6.8mg/LDONO－3－NDO。－X705AStudyonMechanismofShortcutNitrificationandDenitrificationofLowC/NDomesticSewageEffectsofDissolvedOxygenJiangTingtingTongyuanDesignGroupCo．Ltd．Ji'nan250101ChinaAbstractThelowC/Ncharacteristicsofdomesticsewageresultedinlownitrogenremovalefficiencyinthetraditionalnitrifi-cationanddenitrificationprocess．Shortcutnitrificationanddenitrificationhadthecharacteristicsofsavingcarbonsourcereduc-ingaerationamountandhighdenitrificationefficiency．InthisstudytheeffectofdissolvedoxygenonshortcutnitrificationanddenitrificationoflowC/Ndomesticsewagewasinvestigatedwithrealsewageastheobject．Theresultsshowedthattheconcentra-tionofDOhadnosignificanteffectontheremovalofchemicaloxygendemandCODwhilethehighconcentrationofDOcon-tributedtotheremovalofammonianitrogen．WhentheconcentrationofDOwas0.8－1．0mg/Lthemaximumnitrogenremovalefficiencywas85%andthehighestconcentrationofNO－2－Nwas6．8mg/LwhichwassignificantlyhigherthanthatofotherDOgroups．ThehighestconcentrationofNO－3－NincreasedwiththeincreaseofDOcontent．Keywordsshortcutnitrificationdenitrificationdissolvedoxygennitrosationnitrification。。1。2。。///Bardenpho3。C/N·87·43820188·C/NVol.43No.8Aug．2018C。－AOBNO－2－N3。－。40%20%30%C/N4。DO。CASTＲO－BAＲ-ＲOSDO0.5mg/L4DO5。DOC/NDO。－DO。。11．1。TSS125mg/LVSS56mg/LNH+4－N40mg/LNO－2－N0.5mg/LNO－3－N1.2mg/L。1．2DO3。0.5L1.2L。120/min1DO0.3～0.5mg/L2DO0.8～1.0mg/L3DO1.3～1.5mg/L。DO1.0L/minDO。3．5h0.5h。1．3CODTOCTOCDONO－2－NN－11－－5NO－3－N6NH+4－N7。22．1DO71DOCOD。1DO1COD58%DOCOD30dCOD92%COD。DOCOD68%1～20dCOD20d92%92.6%。DO31～20dCOD93.1%。DOCOD92%～93%DOCODCOD。1DO·97·43820188·C/NVol.43No.8Aug．20182．2DONH+4－N2DONH+4－N20dNH+4－NDO。NH+4－NDODO0.3～0.5mg/L1.3～1.5mg/LNH+4－N82．1%92.5%。DONH+4－N。NH+4－N。NH+4－N。NH+4－NDONH+4－N8。DONH+4－N。2DONH+4－NDOTN3。DO0.3～0.5mg/LTN65%DO0.8～1.0mg/LTN85%DO1.3～1.5mg/LTN73%TNDO0.8～1.0mg/LTNTN7.8mg/L。3DOTN2．3DONO－2－NNO－3－NNO－2－NNO－3－NDO。4NO－2－N。DO0.3～0.5mg/LNO－2－N4.5mg/L2.0hNO－2－NNO－2－N1.3mg/L。DO0.8～1.0mg/LNO－2－N6.8mg/LDO0.8～1.0mg/LNO－2－N。DO1.3～1.5mg/LNO－2－N5.4mg/LDO0.8～1.0mg/LNO－2－N20.6%DO。NO－3－NNO－3－N。4NO－2－N·08·43820188·C/NVol.43No.8Aug．20182．4DONO－3－N5NO－3－N5NO－3－NNO－3－NNH+4－NNO－2－NNO－3－NNO－3－N。DO0.3～0.5mg/LNO－3－N5．1mg/LDO0.8～1.0mg/LNO－3－N4.5mg/L。DONO－3－NNO－3－N。DO1.3～1.5mg/LNO－3－N9.3mg/LDO。4NO－2－N。5NO－3－N31－DOCODDO。2DO0.3～0.5mg/LTN65%DO0.8～1.0mg/LTN85%DO1.3～1.5mg/LTN73%。3DO0.8～1.0mg/LNO－2－N6.8mg/LNO－2－N。1ZhouZZhaoMWenquanＲetal．Short－cutnitri-ficationanddenitrificationprocessfortreatinglowC/NfoodwastewaterJ．ChineseJournalofEnvironmentalEngineering2015994165－4170.2．SBＲJ．2018168－73．3．J．20166741497－1504．4Castro－BarrosCMＲodríguez－CaballeroAVolckeEIPetal．EffectofnitriteontheN2OandNOproductiononthenitrificationoflow－strengthammoniumwastewaterJ．ChemicalEngineeringJournal2016287269－276．5．J．2017245－48．6．N_2OJ．20163611872－875．7．CＲID．2016．8．C/NCN105923772AP．2016．·18·