A2O工艺的固有缺欠和对策研究张杰

　A2/O张　杰　臧景红　杨　宏　刘俊良　　　分析了A2/O系统的固有缺欠:硝化菌、反硝化菌和聚磷菌在有机负荷、泥龄以及碳源需求上存在着矛盾和竞争,阻碍着生物除磷脱氮技术的应用。为此各国水处理专家有针对性地进行了大量研究,新工艺层出不穷,但至今仍没有根本性的突破,营养盐去除的整体效果没有显著提高。在深入分析研究基础上,指出应以兼性厌氧反硝化除磷菌的生物特性研究为基础,开展以PHB为碳源的新工艺和硝化菌与反硝化除磷菌相分离的双污泥系统的研究,为生产实践提供理论依据和指导。　A2/O工艺　碳源　反硝化除磷菌　DEPHANOX工艺　双污泥系统　　A2/O20,,N,P,。,,、、,,,,DPB。1　A2/O1932Wuhrmann(1),、。,,,。,;,,,15℃;,,,。,。1　Wuhrmann1962,LudzackEttinger,。1973,BarnardBardenphoLudzack-Ettinger,A/O(2)。A/O,,,。A/O,。2　Ludzack-Ettinger3　Bardenpho(4Bardenpho)A/O,1973BarnardWuhrmann,Bardenpho(3)。Barnard,,。、,。Bardenpho,。22　　　　Vol.29　No.3　2003DOI:10.13789/j.cnki.wwe1964.2003.03.0081976,BarnardBardenpho:Bardenpho(4)。5Phoredox,Phoredox,Bardenpho。4　Phoredox(Bardenpho5Bardenpho)1980,RabinowitzMaraisPhoredox,3Phoredox,A2/O(5)[1]。5　A2/O(Phoredox3)2　A2/OA2/O、、,、,。。,,,,,βPHB,。,,,PHB,。,、,(COD/N)4.5[2]。,,,,(),。A2/O,,:,:UCT、MUCT;,、、,,:JHB、A2/O;DPBPHB,:Dephanox。3　UCT(UniversityofCapeTown,1983)(6)A2/O,,。UCTVIP(VirginiaInitiativeProcess,1987)[3]。A2/O,UCTCOD/TKN,。TKN/COD,,,UCT———MUCT(7)。MUCT,,,,。6　UCT7　MUCT4　4.1　:、、,　Vol.29　No.3　200323　　　COD,[4]COD,:、。,,,,COD,[1]。4.2　[5],,,,,,。,。Johannesburg(JHB)[2]A2/O(8),,33%,。8　JHB,A2/O,1/3,2/3N,P[7]。4.3　A2/O、[8],A2/O、、。,,。。。,,,。,,,,A2/O(9)。:①,,“”;②、,“”;③,,;④,,。,。9　A2/O5　PHB,“”———DPB(DenitrifyingPhosphorusRemovingBacteria),PHB,,,,“(PHB)”。,DPB。5.1　DPB:①DPB/;②DPB;③DPBPAO(PolyphosphateAccumulatingOrganisms),(PHB)、[9]。5.2　DEPHANOXWanner1992PHB,N,P[10],DEPHANOX(10)。DEPHANOX,24　　　　Vol.29　No.3　2003A2/O()。,,;P;。,,;。()。10　DEPHANOXDEPHANOX:①;②COD/TKN,COD/N3.4[2];PA2/O;③,DEPHANOX,,,;④[11]。5.3　,,PHB,COD,,。,1996Kuba(11)。、COD。PHB,,PHB,,。,。,,90%100%,COD、50%,30%50%[9]。11　,。,NH4+。,,NH4+。NH4+,NH4+。NH4+,DPB。NH4+DPBNH4+,N100%,。N(11[a]/([a]+[b])),,N。,,P,P。,P;,,PPHB。NP,。,,,。6　A2/O,。,　Vol.29　No.3　200325　　　。:(1),,;(2),、,、。DEPHANOX,,,;(3),;(4),DPB、,,DPB,。参考文献1　..:,19922　GBortone,SMarsiliLibelli,etal.AnoxicphosphateuptakeintheDephanoxprocess.WatSciTech,1999,40(4-5):177～1853　PCooper,MDay,VThomas.Processoptionsforphosphorusandnitrogenremovalfromwastewater.JIWEM,1994,8(2):85～924　..,1994,20(6):20～235　,..,1996,24(6):647～6516　,,..,2000,23(2):129～1347　,.A2/O.,1998,14(3):27～308　.:[].:,1996,49　TKuba,etal.PhosphorusandnitrogenwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrificationinatwo-sludgesystem.WatRes1996,30(7):1702～171010JWanner,etal.Newprocessdesignforbiologicalnutrientremoval.WatSciTech,1992,25(4-5):445～44811GeorgeAEkama,MarkCWentzel.Difficultiesanddevelopmentsinbiologicalnutrientremovaltechnologyandmodelling.WatSciTech,1999,39(6):1～11⊙:100022　:[phone]　(0)13161156329　E-mail:[e-mail]　075024　:2002-6-18　A2/O除磷脱氮工艺设计计算()周　雹　周　丹　　　A2/O除磷脱氮工艺发展至今已出现几种常见和适合我国国情的类型,对它们的提出背景和基本原理进行了阐述,并对每种工艺的设计计算作了探讨,提出了设计步骤和方法,介绍了有关的计算公式。　A2/O工艺　UCT工艺　改良型UCT工艺　倒置A2/O工艺　多点进出水倒置A2/O工艺　　,A2/O。,:(1)。100%,85%,,,,,,。(2)。,,,,。,,26　　　　Vol.29　No.3　2003WATER&WASTEWATERENGINEERINGVol.29No.3March2003ABSTRACTSAmmoniaNitrogenRemovalfromRefuseLandfillLeachatebyZeoliteAdsorptionProcessJiangJianguoetal(6…………)Abstract:Facingtheproblemofhighammonianitrogencontainedrefuselandfillleachatetreatmentandtoreducethecostofthistreatment,alaboratorybench-scalestudyofzeoliteadsorptionprocesswasexploredforthefeasibilityandefficiency.BytheexperimentitwasfoundthataNH3-Nremovalof78%wasobtainedunderconditionsofzeolitegranulesizeof30～16ordersandthatthepotentialadsorptioncapacitywas15.5mgNH3-Npergramofzeolite.Incaseofthesameadsorptiontime,zeolitesizeandleachateflux,higherinflowNH3-Nconcentrationis,higheradsorptionspeedisobtained.ItisbelievedthatasadsorptionagentforNH3-Nremovalfromrefuselandfillleachate,zeolitecouldbefeasible.PilotStudyonPelletCoagulationProcessTreatingWastewaterinWaterworksHuangTinglinetal(9……………………)Abstract:Apilotplantofpelletcoagulation(PC)processwithcapacityof10～39.5m3/hwascarriedouttotreatwastewaterofawaterworksinXi'an.TheexperimentalresultsshowthatPCprocess,whichischaracterizedwithhighhydraulicload,goodeffluentquality,andhighsludgeconcentration,canbewellusedtotreatwaterworkswastewater.Forthisfacilityincasewhentherawwastewaterhasmoisturecontentof98.53%～99.95%,thehydraulicload,effluentturbidityandmoisturecontentofthedrainedsludgeare4.45～17.25mm/s,5～20NTUand93.8%～96.0%respectively.Theoutletsludgeofthisplantcouldbetransferdirectintodewateringmachine.ThedosagesofPAMandPAC(A1203)arecontrolledat2.2～4.7mgpergramofdrysludgerespectively.OnPowerConsumptionofCatalyseElectrolyticRemovalofCODandNH3-NfromRefuseLeachateWangMinetal(13…………………………………………………………………………………………………………)Abstract:TheimpactfactorsonthespecificpowerconsumptionandcurrentefficiencyofCODandNH3-Nremoval,suchasthematerialofelectrode,thecurrentdensity,thegapbetweenelectrodesandthespecificelectrolyticareaforelectrolytewerestudied.ThestudyprovedthatremovalrateincreasedandthespecificpowerconsumptionforCODandNH3-NremovalsdecreasedincaseofreducedgapbetweenelectrodesandadoptionofSPRanode.Alsohigherremovalswereobtainedincaseofhighercurrentdensityandspecificelectrolyticarea,however,thespecificpowerconsumptionincreasedatthesametime.AStudyontheInherentShortcomingsandCoun