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99环境工程学报Vol．9No．920159ChineseJournalofEnvironmentalEngineeringSep．2015C/N*214122C/N。、DO0.5mg/L2.5mg/L200%、100%100%NO－2-N90%COD、73.42%98.57%。C/NCOD/TN4NO－2-NTN94%。C/NX705A1673-9108201509-4165-06Short-cutnitrificationanddenitrificationprocessfortreatinglowC/NfoodwastewaterZhangZhouZhaoMingxingRuanWenquanMiaoHengfengRenHongyanHuangZhenxingSchoolofEnvironmentalandCivilEngineeringJiangnanUniversityWuxi214122ChinaAbstractAccordingtothecharacteristicsofitswaterqualityashort-cutnitrificationanddenitrificationtreatmentoflowC/Nratiofoodwastewaterwaspresented.Through0.5mg/Land2.5mg/LofDOinmicro-oxy-genzoneandaerobiczoneand200%100%and100%refluxratioofnitrifyingliquidmicro-oxygenmixtureandthesludgetheaccumulationrateofNO－2-Ncouldbeachievedmorethan90%andaverageremovalratesofCODandNH+4-Ncouldbe73.42%and98.57%respectively.SincedenitrificationeffectwouldbeinhibitedunderthelowrationofC/NmethanolwasaddedtothereactorasasourceofcarbontoincreasetheratioofC/N.WhentheCOD/TNwasaround4theTNremovalrateofreactorcouldreach94%undertheNO－2-Nbaseddenitrificationandtheeffluentcouldmeetemissionstandards.Thereforethisstudycouldprovideanefficientandeconomicalbiologicaldenitrificationoffoodwastewater.Keywordsbiologicaldenitrificationshort-cutnitrificationanddenitrificationfoodwastewaterlowC/N2012BAC18B01-2BE20126152014－06－242014－07－161990—E-mailzhouzhang1990@126.com*E-mailwqruan@jiangnan.edu.cnNH+4-N→NO－2-N→NO－3-NNO－3-N→NO－2-N→N2。“NO－2-N→NO－3-N”“NO－3-N→NO－2-N”。1975VotesNO－2-N1-5。NH+4-N→NO－2-N→N225%40%、67。、、pH。NOBAOBNO－2-N8。9FA9、FNA10、20～35℃11、pH12、DO131415。AOBNOBNOBAOB。、COD、SS16C/N。、。350t。C/N。。11.1COD749～1965mg/LNH+4-N655～1498mg/LpH7.70～8.24NO－3-N13～93mg/LNO－2-N0～5mg/LTN666～1517mg/L。COD、C/N1。1.21。。100cm、40cm、70cm50cm200L31Fig.1Flowchartoftest、、1∶2∶2。40L。、、。30±1℃。、TNDO0.5mg/L1718。。1.31dDO0.5mg/LDO2.5mg/L0.12kg/m3·d。3～4g/L。200%100%100%。5Ⅰ0～40dⅡ41～50dⅢ51～55dⅣ56～95dⅤ96～120d。1.4COD191919N-1--19-19MLSS19。、1。=ΔCNO－2-NΔCNO－2-N+ΔCNO－3-N×100%1ΔCNO－2-NΔCNO－3-Nmg/L。22.1NO－2-N266149C/N2Fig.2ChangesofNO－2-Naccumulationrateinthemicro-oxygenzoneNH+4-N655～1498mg/L1011mg/L。1dNO－3-NNO－2-N。NO－3-NNO－2-NNO－2-NDO。15dNO－3-NNO－2-N0～40dCOD400mg/L、CODCOD90%CODNO－3-N。40～50NO－3-NpHNO－3-N15～40dNO－3-N。NO－2-NNO－2-N。51～55NO－3-N。56～95NO－3-NNO－2-NNO－2-N90%。2.22.2.1COD去除效果3CODCOD749～1645mg/LCOD1350mg/L。COD250～479mg/L《》CJ343-2010≤500mg/L。COD60%～92%COD。20COD86.4%。21CODCOD78%～85%81%。。3CODFig.3CODremovalefficiency40～50CODNO－3-N。2.2.2NH+4-N去除效果4NH+4-NNH+4-N655～1498mg/LNH+4-N1120mg/L。NH+4-NNH+4-N52%～79%69.9%DONH+4-N。NH+4-76149NNH+4-N0～48mg/L12mg/LNH+4-N98.57%。Zhang22、1200～1800mg/L15mg/L98%。231100～1800mg/L3DO1.5mg/L85%。。4NH+4-NFig.4NH+4-Nremovalefficiency2.2.3NO－3-N浓度变化5NO－3-N。NO－3-NH+。COD。NO－3-NNO－3-NNO－3-NNO－3-N。40～50NO－3N。NO－3-NNO－3-N51mg/L。5NO－3-NFig.5ChangeofNO－3-N2.2.4TN去除效果TN666～1517mg/L1213mg/LTN62～701mg/LTN31%～94%76%。TN62mg/L《》CJ343-2010≤70mg/L。24A2ODO0.3～0.5mg/LHRT2.34TN75.4%。TNNO－3-NTNNO－3-N。COD1350mg/LCOD/TN1.11TN。2.3。25。COD/TN＞5～726。86149C/N56～95101000200030004000mg/LCOD。6TNNO－3-N。1000mg/L2000mg/LNO－3-NTNNO－3-N。3000mg/LTNNO－3-N。3000mg/LCOD/TN4NO－3-NTN94%。23C/NCOD/NOx3.86MLSS6.09g/LNO－2-NNO－2-N89.7%NO－3-NNO－3-N67.6%33.4%。6TNNO－3-NFig.6VariationofTNandNO－3-NbyadditiondifferentconcentrationsofCH3OH31C/N30±1℃DO0.5mg/LNO－2-N90%。2DONO－2-NNH+4-N69.9%NH+4-NNH+4-N98.57%。3COD/TN1.11TNNO－2-N3000mg/LCODTN94%。1..20042.A/O.2006265703-709MaYongWangShuyingZengWeietal.A/Opilot-scalenitrogenremovalprocesstreatingdomesticwastewaterⅠ.Thestudyofshort-cutnitrificationanddenitrification.ActaScientiaeCircumstantiae2006265703-709inChinese3MulderA.VandeGraafA.A.RobertsonL.A.etal.Anaerobicammoniumoxidationdiscoveredinadenitrifyingfluidizedbedreactor.FEMSMicrobiologyEcology1995163177-1844MulderJ.W.vanKempenR.N-removalbySharon.Wa-terQualityInternational19973430-315Surmacz-GórskaJ.CichonA.MikschK.Nitrogenre-movalfromwastewaterwithhighammonianitrogenconcen-trationviashorternitrificationanddenitrification.WaterScienceandTechnology1997361073-786VerstraeteW.PhilipsS.Nitrification-denitrificationprocessesandtechnologiesinnewcontexts.EnvironmentalPollution1998102S1717-7267TurkO.MavinciD.S.SelectiveinhibitionAnovelcon-ceptforremovingnitrogenfromhighlynitrogenouswastes.EnvironmentalTechnologyLetters19878419-4268.AOBNOB．20093051430-1436ZengWeiZhangYueLiLeietal.Competitionandop-timizationofAOBandNOBfordomesticwastewatertreat-mentatnormaltemperatures.EnvironmentalScience20093051430-1436inChinese9ParkS.BaeW.Modelingkineticsofammoniumoxidationandnitriteoxidationundersimultaneousinhibitionbyfreeammoniaandfreenitrousacid.ProcessBiochemistry2009446631-64010VadiveluV.M.KellerJ.YuanZ.FreeammoniaandfreenitrousacidinhibitionontheanabolicandcatabolicprocessesofNitrosomonasandNitrobacter.WaterScienceandTechnology200756789-979614911HellingaC.SchellenA.A.J.C.MulderJ.W.etal.TheSharonprocessAninnovativemethodfornitrogenremovalfromammonium-richwastewater.WaterScienceandTechnology1998379135-14212VillaverdeS.García-EncinaP.A.Fdz-PolancoF.In-fluenceofpHovernitrifyingbiofilmactivityinsubmergedbiofilters.WaterResearch19973151180-1186