SBBR工艺中亚硝酸型同步硝化反硝化的过程控制荣宏伟

-NH4+-N→NO2-→N-N225%40%。、、、[1-7]。NO2--N。[8-9]NO2--N。。、SB-BRDOSBBRDO、ORPpHDO、ORPpHSBBR。11.1115cm125cm17L。SBBR1212131.5100062.1000223.518000SBBRSBBRNO2--N/NOx--N90%TN8mg·L-171.4%～85.6%。SBBRDO、pHORP。DO、pHORPCOD“”DO、pHORPSBBR。SBBRX703.1A1000-3700(2008)12-023-0520[e-mail]。3412200812TECHNOLOGYOFWATERTREATMENTVol.34No.12Dec.,200823DOI:10.16796/j.cnki.1000-3770.2008.12.0071.2、、NH4Cl、KH2PO4、MgSO4、CaCl2、FeSO4NaHCO3pH7.5。1。1.3CODNH4+-NNO3--NNO2--NN-1--TN-DO、ORPpHWTW。1.4SBBR30d。、、、NH4+-N、COD90%。22.1---1mg·L-150L·h-120min10min。26±1℃50L·h-113d2。1～5d70%。5～13d13d51%。22mg·L-1。。0.04～0.080.02～0.06。。。14d40L·h-1DO。。23d。25d90%1mg·L-15mg·L-1。14d22.82mg·L-125d7.31mg·L-125d8mg·L-1TN024681012141618202224262830051015202530NO-N
NO-N/%
dNO-NNO-N/mgL50607080901002NO2--N、NO3--N、TNNO2--N/NOX--NFig.2VariationofNO2--N、NO3--N、TNandNO2--N/NOX--Nattheendofaeration1Fig.1FlowchartoftheSBBRprocess!#$CODTNNH4+-NNO3--NNO2--N150～20026.6～32.122.7～29.40.1～0.30.1～0.41/mg·L-1Table1Rawwaterquality34122473.4%～85.6%。DODO。。SBBR。2.2DO、ORPpH34SBBR26℃DO、ORPpHNH4+-N、NO2--N、NO3--N“”、TN、COD。3ORP4a、A、BCDOpH3ORPA、B、C。4COD“”。A、ABBC。2.2.1a0～6min4COD、TNNH4+-N。3DOpHpH。“”DOORPNH4+ORP。aA6～45minDOpHpHORP。pHCO2pH。CO2pH。DO。ORPDOORP＝a＋bln[o2]DOORP。2.2.2AB45～135minCOD050100150200250300350012345678pH
minDO/mgLORP/20)/mV7.07.27.47.67.88.03DO、ORP、pHFig.3TheprofilesofDOORPandpHduringsimultaneousnitrificationanddenitrificationvianitriteat26℃050100150200250300350051015202530COD/mg
LNO-NNO-NTN/mg
Lmin0501001502002504、TNCODFig.4TheprofilesofNH4+-N、NO2--N、NO3--N、TNandCODduringsimultaneousnitrificationanddenitrificationvianitriteat26℃SBBR25COD80%。TNNH4+-NNO2--NNO3--N。DO、pHORPADO。DOORPORP。pHCO2CO2pHpH。2.2.3CODBC135～345min。CODTNNH4+-NNO2--NNO3--N1mg·L-1。DOpHORP。DO。NH4+-NNO2--NH+NO2--NN2H+pH。ORPDONH4+NO2-。C345minDO、pHORP4NH4+-N1.0mg·L-1NO3--N1mg·L-1NO2--N5mg·L-1TNDOORP。DONO2--N345～360minNO2--NNO3--NTN。CO2pH。C。DO、pHORPCOD“”。DO、pHORPCOD、TN。CDO、pHORP。DO、pHORP。2.3DO、ORPpH21℃、31℃35℃26℃050100150200250300350400450012345678pH
minDO/mgL(ORP/20)/mV7.07.27.47.67.88.05a21℃050100150200250300012345678pH
minDO/mgLORP/20)/mV7.07.27.47.67.88.05b31℃5DO、ORPpHFig.5TheprofilesofDOORPandpHatdifferenttemperatures050100150200250300350400012345678
minDO/mgL(ORP/20)/mV7.07.27.47.67.88.0pH5c35℃341226PROCESSCONTROLOFSIMULTANEOUSNITRIFICATIONANDDENITRIFICATIONVIANITRITEINSEQUENCINGBATCHBIOFILMREACTORRONGHong-wei1,2,LINGZhong-yong1,PENGYong-zhen2,ZHANGKe-fang1,XIEDuo3(1.SchoolofCivilEngineering，GuangzhouUniversity.Guangzhou510006，China;2.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering，BeijingUniversityofTechnology，Beijing100022，China;3.ShenzhenHuamengArchitecturalDesignCO,.LTD，Shenzhen518000，China)Abstract:Nitritecanbeaccumulatedintheinitialcultivationandattenuationstageofbiofilminsequencingbatchbiofilmreactor(SBBR).Nitrogenremovalfromwastewaterbysimultaneousnitrificationanddenitrificationvianitritewasachievedbycontrollingdissolvedoxygen(DO)concentrationinSBBR.Thenitrateaccumulationrateremovalrate（NO2--N/NOx--N）was90%andTNwasalwayslessthan8mg/Lwhenaerationwasended.TheTNremovalcanreachbetween71.4%and85.6%.InordertoachievetheprocesscontrolofsimultaneousnitrificationanddenitrificationvianitriteinSBBR,thevariationpatternsofDO、pHandORPduringsimultaneousnitrificationanddenitrificationvianitritewerestudied.TheresultsshowedthatthevariationofDO、pHandORPwerewellrelatedtoorganicdegradation,nitrificationanddenitrificationofSBBR.SothatDO、pHandORPcanbeusedasprocesscontrolparametersforthesimultaneousnitrificationanddenitrificationvianitriteinSBBRbasedonthevariedcurveofDO、pHandORP.Keywords:sequencingbatchbiofilmreactor（SBBR）;simultaneousnitrificationanddenitrificationvianitrite;processcontrol;temperatureDO、ORPpHDO、pHORP。5。5DO、pHORP。DOpHA、BCORPaDO、pHA、B、C。a、ACBB。SBBR31℃35℃。326℃SBBR90%TN8mg·L-1。SBBRDO、pHORPCOD“”DO、pHORP。DO、pHORPDO、pHORPSBBR。[1]OskarModinKensukeFukushi,KazuoYamamoto.Denitrifica-tionwithmethaneasexternalcarbonsource[J].WaterResearch,2007,41(6):2726-2738.[1]GaoDaWen,PengYongzhen,WangPeng.UsingORPandpHvalueforSBRprocesscontrolofshortcutnitrification-denitrifica-tion[J].JournalofEnvironmentalScienceandHealth,2003,38(12):2933-2942.[3]HyungseokYoo,Kyu-HongAhn,HyungJibLee,etal.NitrogenRemovalFromSyntheticWastewaterbySimultaneousNitrifica-tionandDenitrification(SND)viaNitrificationInanIntermittent-ly-aeratedReactor[J].WatRes.,1999,33(1):145-154.[4],,.A/O()[J].,2006,26(5):716-721.[5],,,．[J].,2006,19(1):26-29.[6],,.[J].,2005,56(4):24-28.[7],,,.DO[J].,2004,20(5):13-16.[8],．[J].,2007,38(2):12-15.[9],,.-[J].,2007,19(2):74-77.SBBR27