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MLSSpHNO-2-N1,2,1,1(1.,100022;2.,310014):DPBSBR,MLSSpHNO-2-N:MLSS,MLSS;pH(pH=68)P/C,pH8,,pH;NO-2-N5.59.5mg/LNO-2-N,NO-2-N15mg/L:SBR;;pH;MLSS;NO-2-N:X703.1:C:1000-4602(2005)07-0047-05:(20377003);(863)(2003AA601110)InfluenceofMLSS,pH,andNO-2-NConcentrationonDenitrifyingPhosphorusRemovalWANGYa2yi1,2,WANGShu2ying1,PENGYong2zhen1(1.SchoolofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Bei2jing100022,China;2.SchoolofArchitecturalEngineering,ZhejiangUniversityofTechnology,Hangzhou310014,China)Abstract:AseriesexperimentsusingDPBsludgecultivatedinA2NprocesswerecarriedoutinSBR,inordertostudytheeffectofMLSS,pH,andNO-2-Nconcentrationonanaerobicphosphorusre2leaseandanoxicphosphorusuptakebyphosphorusaccumulatedorganism(PAO).TheresultshowsthatincreaseofMLSScanshortenthereactiontimeofanaerobicphosphorusreleaseandanoxicphosphorusuptake;however,excessiveMLSSwillresultinsecondaryreleaseofphosphorusattheendofanoxicphosphorusuptake.WhenpHincreasesfrom6to8,P/Cincreasestoo,andwhenpHishigherthan8,phosphateprecipitationoccurs,whichwillaffectthenormalphosphorusrelease.Besides,greatrisingofpHduringanoxicphosphorusuptakewilldisturbthebiologicalphosphorusremovaleffect.WhenNO-2-Nconcentrationiscontrolledat5.5-9.5mg/L,NO-2-NcanbeusedaselectronacceptorbyDPBforphosphorusuptake;whenNO-2-Nreaches15mg/L,boththedenitrificationandphosphorusuptakewillbeinhibited.Keywords:SBR;denitrifyingphosphorusremoval;pH;MLSS;NO-2-N7421720057CHINAWATER&WASTEWATERVol.21No.7Jul.2005转载中国科技论文在线(DPB)NO-3,,,COD50%30%,50%[13],A2N[4]SBR,,1111,4LSBR(1),NaAcK2HPO4KNO3CODPO3-4-PNO-3-N,[4]pH(pH8[5])pH,HClNaOHpH7;,DOpH(3000r/min,1min)1SBRFig.1Experimentalset2upofSBR112COD:5B-1COD;:;:;MLSS:;pHDO:WTWinolablevel22211MLSS2.1.1A2N(PHB),23SBR(1#2#3#)60140720mL;,NO-3-NPO3-4-P20mg/L10.12mg/L,3885185114731mg/LMLSSNO-3-NPO3-4-P232MLSSNO-3-NFig.2EffectofMLSSonNO-3-Ncontent3MLSSPO3-4-PFig.3EffectofMLSSonPO3-4-Pcontent23,1#,:15min,1#2#3#12.0422.3340.32mgPO3-4-P/(Lh),,150min(1#)30min(3#),2#120min,MLSS,3#PO3-4-P,NO-3-N(0.63mg/L)315min13.6012.0684721中国科技论文在线(gMLSSh),,330min,1#8.08mgNO-3-N/(gMLSSh),2#12.67mgNO-3-N/(gMLSSh),1#,3#39.33mgNO-3-N/(gMLSSh)240min,3#,1#2#NO-3-N6.92mg/L1.53mg/L,2.1.2MLSS,(,PHB),33SBR,4L,1#3#MLSS184432316730mg/L,NaAc()COD100mg/L,KH2PO4PO3-4-P9.0mg/L;180minKNO3,3NO-3-N30mg/L(221),HClNaOHpH7.00.1,3#,():3#45min,2#60min,1#3#26mg/L,MLSS1#8.29mg/LKNO3,3,PO3-4-PNO-3-N,MLSS,PO3-4-PNO-3-N:15min,3#PO3-4-P26.0mg/L10.89mg/L,NO-3-N30.74mg/L23.64mg/L;2#PO3-4-P19.96mg/L7.71mg/L,NO-3-N30.32mg/L25.16mg/L;1#PO3-4-P17.71mg/L14.79mg/L,NO-3-N29.69mg/L27.46mg/L330min:10.6310.296.88mgPO3-4-P/(gMLSSh)5.044.914.37mg2NO-3-N/(gMLSSh),MLSS,MLSSNO-3-N,,MLSS,MLSS(2#),,,MLSS,,,212pH2.2.11200mL,33SBR,NaAc,3SBRpH6.06.57.0,HClNaOHpH3SBR,pH,pH7.58.08.5,90min6SBRMLSS39724283mg/L,pH,pH,pH8,(1),pH,,,(theprotonmotiveforce,PMF,ATP),PMF,(Poly-p),ATP,947,:MLSSpHNO-2-N21中国科技论文在线(HAc),PHB,HAc(ATP)pH,ATP,pH2.2.2pH(8),,pHpH,22SBR,PO3-4-PNO-3-N20mg/L42mg/L;pH7.0,1#SBRpH,2#SBRHClpH7.0,4h,(221),pH,HClpH,pH,1#30min2#,1#pH,30min,30minpH7.99,pH8.01#2#,40minPO3-4-P,2#60min1#pH,1#2#pH8,pH,pH8,,,,,pH,pH213NO-2-N,,,NO-2-N5.59.515mg/L3(1#3#):A2N1400mL,3SBR,PO3-4-P10mg/L,2544NO-2-NFig.4EffectofNO-2-NconcentrationonphosphorusuptakeA2N,NO-2-N(NO-2-N1mg/L),NO-2-N,,05721中国科技论文在线(PO3-4-P),,,,,,,,NO-2-N,,3MLSS,MLSS,pH,pH,pH8,,pH,pH(5.59.5mg/L),;15mg/L,,:[1]KubaT,VanLoosdrechtMCM.PhosphorusandnitrogenremovalwithminimalCODrequirementbyintegrationofnitrificationinatwo2sludgesystem[J].WatRes,1996,42(1-2):1702-1710.[2]KubaT,VanLoosdrechtMCM,BrandseFA,etal.Oc2currenceofdenitrifyingphosphorusremovalbacteriainmodifiedUCT2typewastewatertreatmentplants[J].WatRes,1997,31(4):777-786.[3]BortoneG,MarsiliLibelliS,TilcheA,etal.Anoxicphos2phateuptakeinthedephanoxprocess[J].WatSciTech,1999,40(4-5):177-183.[4],,,.[J].,2003,9(1):33-36.[5],,.COD[J].,2002,23(3):49-52.:(010)67391827E-mail:yayiwang@163.com:2004-12-2615104m3/d,5,7635,6300,3.63,,225hm2,1290104m3,63hm2,2m,15km,,2.67,2()157,:MLSSpHNO-2-N21中国科技论文在线
本文标题:MLSSpH及NO2N对反硝化除磷的影响
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