好氧反硝化菌处理高浓度氨氮废水研究

Vo.l1,No.2Mar.,2011JournalofEnvironmentalEngineeringTechnology1,220113:2010-10-09:(2007BAK36B07);:(1983!),,,[e-mail]*:(1953!),,,,[e-mail]:1674-991X(2011)02-0111-07酒卫敬,汪苹*,岳建伟,100048:700mgL,DO,pH4,SBR,SBR45,,23~25∀,DO2mgL,pH68~80,78h,CODCr2500mgL,CODCr88%~93%;700mgL,98%~99%,86%~93%:;;;:X7031:ADOI:103969.jissn.1674-991X.201102019StudyontheTreatmentofWastewaterContainingHighconcentrationAmmoniaNitrogenwithAerobicDenitrifyingBacteriaJIUWeijing,WANGPing,YUEJianweiCollegeofChemicalandEnvironmentalEngineering,BeijingTechnologyandBusinessUniversity,Beijing100048,ChinaAbstract:Thetreatmentofsimulatedwastewatercontaininghighconcentration(upto700mgL)ammonianitrogenwithheterotrophicnitrificationaerobicstrainsinSequencingBatchReactor(SBR)wasstudied.FourinfluencingfactorsofSBRincludingthetemperature,dissolvedoxygenconcentration,pHandhydraulicretentiontimewerestudiedandtheoptimaloperatingconditionsobtained.TheresultsindicatedthattheefficiencyofsimultaneousnitrificationanddenitrificationbyseedingsludgeanddominantbacteriacouldbeenhancedafterculturedforfortyfiveoperationalcyclesinSBR.Undertheoptimalconditionsoftemperature2325∀,dissolvedoxygenconcentration2mgL,pH6880andhydraulicretentiontime78h,whenthechemicaloxygendemandwas2500mgLandtheammonianitrogenwas700mgLintheinfluen,tthechemicaloxygendemandremovalefficiencycouldreach88%93%,whiletheammonianitrogenandtotalnitrogenremovalefficiencycouldachieveashighas98%99%and86%93%respectively.Keywords:sequencingbatchreactor;heterotrophicnitrification;aerobicdenitrification;ammonianitrogen,:2,2,,,,,,,,[12]2080(Castignett,i1984)Do1menicCastignetti[3],,,[4][5],,70%[6]-SBR,CODCr450~500mgL45~55mgL,,CODCr,,98%,97%90%Huang[7]Citrobacterdiversus,DO31~38mgL,40h,908%,700mgL()(SBR)111SBR,,170mm,320mm,6L,,23~30∀(1),(),,,SBR,SBR,,,CODCrDO,pHCODCr,,SBR1218,,,1!;2!;3,4!;5!;6!;7!;8!;9!1SBRFig.1ExperimentapparatusofSBR,12(1)SBR250mgL,70%,;CODCr500mgL,588%7(WYLW12,WYLW16,WYLW110,WYLW24,LH11,LH21,LH23),7g(8000rmin,4∀,5min),07g,,7142%,5(WXZ2,WXZ8,WXZ9,WXZ15,WXZ17),7g(8000rmin,4∀,5min),07g,,3,,SBR13;N(1);;CODCrHACH;pHDOWTW2,,,SBR#112#2:,,(CODCr,,)1-[89]Table1Denitrificationabilityofheterotrophicnitrificationaerobicdenitrificationstrains%%CODCr%WYLW12(Bacillussp)970892288895WYLW16(Bacilluscereus)952194959223WYLW110(Bacillussp)653865047895WYLW24(Bacillussp)721370168223LH11(Bacilluscereus)998799047732LH21(Bacillussp)918192106689LH23(BacillusmegateriumB)988398168982WXZ2(Delftia)948795278890WXZ8(Bacilluscereus)963093816982WXZ9(Delftia)985098698127WXZ15(Delftia)922292869507WXZ17(Comamonas)95829646797621SBRSV30,MLSS,22Table2CharacteristicsofactivatedsludgebeforecultivatingMLSS(mgL)SV30%CODCr%%433585,45926422SBRCODCr2500mgL,700mgL,CODCr100mgL,25mgL,CODCrN3~5,CODCr,,,1molLNa2CO3,pH68~80,pH(11!12),,28~30∀,,27,12h1,7h,45h,05h;CODCr,,28~35,24h1,3h(),4~12(),115h,05h;36~45,24h1,2h,3~17,18~22,15h,05hCODCr,2323,45,,CODCr2500mgL,CODCr70%;700mgL,98%~99%,,,,SV3045%,#113#13SBRCODCr2500mgL,700mgL,SBR:25~30∀,DO2mgL,pH68~80,58hSBR24h,15min,2h,15h,5h,15h,15minSBR1CODCr4:9927%,7156%,CODCr8603%,4,3CODCr,,4CODCrFig.4VariationofCODCrandnitrogeninatypicalperiod,,,,SBR717(),,,,,(1~14),(15~16),(17~25)[10],Monod,15mgL,,,;15mgL,,,,DODOpH5,,DO;,CODCr,,,,DO,pH,,pH68~80;,,pHpH#114#2:5DOpHFig.5VariationofDOandpHinatypicalperiod,H+H+(CO2),CO2,pH4SBRSBR,CODCr2500mgL(2200mgL,7200mgCODCr,17400mgCODCr),700mgL,MLSS8000mgL:2h,3~7,18~22,15h,05hDOCODCr,,,,DO,pH4,SBR,CODCr41DO2mgL,pH68~80,58h,,15~35∀,10∀30∀,;20~35∀,15∀[11],23~25∀28~30∀,,61~623~25∀,7~1228~30∀,CODCr,CODCr73%~78%76%~80%,72%~77%78%~81%,6CODCr,,Fig.6EffectofdifferenttemperatureonCODCr,NH4+N,TNremovalefficiency42DO23~25∀,pH68~80,58hDO()2mgL(1~6),4mgL(7~12)6mgL(13~18),DO,77,3DO,98%~99%,,DO,72%~77%,78%~81%,82%~85%,DO7,DO,DO,,,,DO,02~04mgL,12~15mgL[12]DO,,,CODCrDO75%~77%,82%~85%,79%~83%,CODCr,SBRDO2mgL[7],#115#1Citrobacterdiversus,DO31~38mgL,908%DO7DOCODCr,,Fig.7EffectofdifferentDOonCODCr,NH4+N,TNremovalefficiency,,DO,,43pH23~25∀,DO2mgL,58hpH[13]:1)pH;2)pH,[14],pH675,pH,pH70~81[15]pH65~80pH65pH90,[16],pH[17],pH74~83Groenewge[18]pH60~70[19]pH75~88,,pH68~8065~90,81~6pH68~80,7~12pH65~908,pH80,pH68~80,82%~85%8pHCODCr,,Fig.8EffectofdifferentpHonCODCr,NH4+N,TNremovalefficiency4423~25∀,DO2mgL,pH68~80,,,2,58h(1~6)78h(7~12),99,,,98%~99%;,82%~85%86%~93%;CODCr,79%~85%88%~93%,,,78h45SBR,SBR:pH68~80,23~25∀,DO2mgLDO,CODCr2500mgL,CODCr88%~93%;700mgL,98%~99%,86%~93%(10)[6],SBR,CODCr450~500mgL45~55mgL,CODCr,,98%,97%90%SBR#116#2:,CODCr2500700mgL,5(1),,CODCr,,3~5,(2),,,,SV3045%,(3)SBRpH68~80,23~25∀,DO2mgL,78h,2h,3~17,18~22,CODCr2500mgL,88%~93%;700mgL,98%~99%,86%~93%[1]HYUNGSEOKY,HONGKA.Nitrogenremovalfromsyntheticwastewaterbysimultaneousnitrificationanddenitrificationvianitriteinanintermittentlyaeratedreactor[J].WaterRes,1999,33(1):145154.[2]HOLMANJB,WAREHAMDG.COD,ammoniaanddissolvedoxygentimeprofilesinthesimultaneousnitrificationdenitrificationprocess[J].BiochemicalEngineeringJourna,l2005,22(2):125133.[3]CASTIGNETTID,HOLLOCHERTC.Herterotrophicnitrificationamongdenitrifiers[J].ApplEnviro