AO生物脱氮工艺处理生活污水中省略二系统性能和SND现象的研究马勇

26520065　　　　　　ActaScientiaeCircumstantiaeVo.l26,No.5May,2006:-()(No.50521140075);SupportedbytheKeyInternationalCooperativeProjectofNSFC(No.50521140075)andtheOpenProjectofKeyLaboratoryofBeijing:　(1976—),,;*(),E-mail:[e-mail]:MAYong(1976—),male,Ph.D.;*Correspondingauthor,E-mail:[e-mail]　,,.2006.A/O()SND[J].,26(5):710-715MaY,PengYZ,YuDS.2006.A/Opilot-scalenitrogenremovalprocesstreatingdomesticwastewaterⅡ.ThestudyofsystemcharacteristicsandSND[J].ActaScientiaeCircumstantiae,26(5):710-715A/O()SND马　勇1,彭永臻1,2,*,于德爽31.哈尔滨工业大学,市政与环境工程学院,哈尔滨1500902.北京工业大学,北京市水质科学与水环境恢复工程重点实验室,北京1000223.青岛大学理工学院,青岛266071:2005-08-19　　　:2006-03-21　　　:2006-03-21:A/O,DO、.,DOCOD85%92%.C/N2.93,64%,,15%85%,12%.、.DO,5%～12%,DO(SND).:A/O;;DO;;:0253-2468(2006)05-0710-06　　　:X703.1　　　:AA/Opilot-scalenitrogenremovalprocesstreatingdomesticwastewaterⅡ.ThestudyofsystemcharacteristicsandSNDMAYong1,PENGYongzhen1,2,*,YUDeshuang31.SchoolofMunicipalandEnvironmentalEngineering,HarbininstituteofTechnology,Harbin1500902.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing1000223.SchoolofTechnology,QingdaoUniversity,Qingdao266071Received19Augest2005;　　　receivedinrevisedform21March2006;　　　accepted21March2006Abstract:TheCOD,ammoniaandtotalnitrogen(TN)removalefficiencywerestudiedinthepaperatlowDOconcentrationinapilot-scaleA/Onitrogenremovalplanttreatingdomesticwastewater.TheexperimentalresultsshowedthattheCODandammoniaremovalefficiencyreach85%and92%,respectively.BecauseofthelowinfluentCOD/TNratio(2.93),theaverageTNremovalefficiencywasonly64%,whileTNremovalefficiencycouldbeincreasedby12%withthenitriteaccumulationratioincreasedfrom15%to85%.Agoodcorrelationofammoniaremovalefficiency,nitrificationrateandTNremovalefficiencywasfound.Simultaneousnitrificationanddenitrification(SND)withnitriteatlowDOlevelcouldberealized,whichcontributedto5%～12%TNnitrogenremovalbasedonnitrogenmassbalance.TheSNDwouldbedamagedwiththeDOincreased,andthemechanismofSNDwithnitritewaspresented.Keywords:A/Onitrogenremovalprocess;domesticwastewater;DO;pilotplant;simultaneousnitrificationanddenitrification(SND)　　(2006),DO(0.3～0.7mgL-1)A/O.25%,40%,DO,DOI:牨牥牨牫牰牱牨牤jhjkxxb牪牥牥牰牥牭牥牥牪5:A/O()SND,.,A/O、,、.,DO(SND)(Pochanaetal.,1999;Holman,2005),A/OSND,,DOSND.1　(Studyofsystemcharacteristics)1.1　对CODCr的去除效果1A/OCODCr.CODCr163.2～389.5mgL-1,248.6mgL-1,CODCr5.0～70.7mgL-1,40mgL-1,,CODCr《》(GB18918-2002).CODCr72.9%～97.8%,85%,COD,DO.,75%,10%.,DO.COD,,,,.,,SS,CODCr.1　A/OCODFig.1　TheCODremovalefficiencyofA/Opilotplant1.2对氨氮的去除效果2,2　A/OFig.2　TheammoniaremovalefficiencyofA/Opilotplant65.4～105.7mgL-1,79.1mgL-1,0～20.1mgL-1,6.5mgL-1,77%～100%,91.8%,,DO.DO,100%,《》(GB18918-2002).,,DO(2mgL-1).,,,1.2～1.5mgL-1,,DO.,0.2～0.4mgL-1,DO,.,,DO2mgL-1,,DO.DO,,DO15%.1.3　A/O工艺对总氮的去除效果3A/O.68.5～110.2mgL-1,84.9mgL-1,15～46.7mgL-1,29.8mgL-1,46.4%～80%,64%,,COD,COD/TN2.93,,,.711　　　　　　　　　　2640%,C/N,,,.3　A/OFig.3　TheTNremovalefficiencyofA/Opilotplant1.4　亚硝化率与总氮去除率的关系4,,,,,,,.40%,,,.(15%～30%)56%,(85%),68%,12%.,.4　Fig.4　TherelationbetweennitriteaccumulationandTNremovalefficiency　1.5　氨氮去除率与总氮去除率关系5,,,,,.,,、,,,.,,,,,,,.,,.5　Fig.5　TherelationbetweenammoniaandTNremovalefficiency6　Fig.6　Therelationbetweenammoniaremovalefficiencyandnitrificationrate1.6　氨氮去除率与硝化速率的关系6,,,.,,,7125:A/O()SND.1.7　总氮去除率与反硝化速率的关系7,,,,.,,.,30%～70%,0,,5%～15%.,、.7　Fig.7　TherelationbetweenTNremovalefficiencyanddenitrificationrate2　A/O/(SNDwithnitritepathwayinA/Oprocess)SND,.SNDSND,(SND)(Hyungseoketal.,1999).DO,、、,DOpH.8DO(0.47mgL-1),、、,DOpH.TKN82.7mgL-1,COD240mgL-1,3,5,MLSS3500mgL-1,2,0.5.8　DO0.47mgL-1DO、pHFig.8　Thevariationofnitrogencompounds’concentrationandDOandpHwhenDOconcentrationequalto0.47mgL-1DO0.3～0.7mgL-1,0.47mgL-1.,17.6mgL-14.3mgL-1,9　8Fig.9　Thenitrogenmassbalanceofthecorrespondingfigure8(TKNi,NO-x,inf,TKNe,NO-x,e,Nsludge,NDN,NSND.:NSND=TKNi+NO-x,inf-TKNe-NO-x,e-Nsludge-NDN)80.5%.,,,pH,pH.,,.9,,7.7%,713　　　　　　　　　　2656.8%,9.5%,SND.DO,DOA/OSND,5%～12%.10　DO1.7mgL-1DO、pHFig.10　Thevariationofnitrogencompounds’concentrationandDOandpHwhenDOconcentrationequalto1.7mgL-110DO(1.7mgL-1),、、,DO、pHORP.TKN90.9mgL-1,COD236mgL-1,2,6,MLSS3700mgL-1,2.5,0.75.DO1.7mgL-1.TKN6.5mgL-1,27.3mgL-14.7mgL-1,,85%.,,38.8mgL-1,38.5mgL-1.11,SND,DO,.DO1.2mgL-1,SND,,,DOSND.DO,SND,.11　10Fig.11　Thenitrogenmassbalanceofthecorrespondingfigure103　(Conclusions)1)DOA/O,85%92%.,DO.,DO,DO15%.2),,.15%～30%85%,12%.,;,,,,.3)DOSND.SNDDO.DO0.3～0.7mgL-1,5%～12%SND.DO1.2mgL-1,SND.References:HolmanJB,WarehamDG.2005.COD,ammoniaanddissolvedoxygentimeprofilesinthesimultaneousnitrification/denitrificationprocess[J].BiochemicalEngineeringJournal,22(2):125—133HyungseokYoo1,Kyu-hongAhn,Hyung-jibLee,etal.1999.Nitrogenremovalfromsyntheticwastewaterbysimultaneousnitrificationanddenitrification(SND)vianitriteinanintermittently-aeratedreactor[J].WatRes,33(1):145—154HwangSunjin,HanakiKeisuke.2000.Effectsofoxygenconcentrationandmoisturecontentofrefuseonnitrification,denitrificationandnitrousoxideproduction[J].BioresourceTechnology,71(2):159—1657145:A/O