A2O工艺的固有缺欠和对策研究

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,,,,,,,DPB1A2/O1932Wuhrmann(1),,,,,;,,,15;,,,,1Wuhrmann1962,LudzackEttinger,1973,BarnardBardenphoLudzackEttinger,A/O(2)A/O,,,A/O,2LudzackEttinger3Bardenpho(4Bardenpho)A/O,1973BarnardWuhrmann,Bardenpho(3)Barnard,,,Bardenpho,22Vol29No320031976,BarnardBardenpho:Bardenpho(4)5Phoredox,Phoredox,Bardenpho4Phoredox(Bardenpho5Bardenpho)1980,RabinowitzMaraisPhoredox,3Phoredox,A2/O(5)[1]5A2/O(Phoredox3)2A2/OA2/O,,,,,,,PHB,,,,PHB,,,(COD/N)45[2],,,,(),A2/O,,:,:UCTMUCT;,,,:JHBA2/O;DPBPHB,:Dephanox3UCT(UniversityofCapeTown,1983)(6)A2/O,,UCTVIP(VirginiaInitiativeProcess,1987)[3]A2/O,UCTCOD/TKN,TKN/COD,,,UCTMUCT(7)MUCT,,,,6UCT7MUCT441:,Vol29No3200323COD,[4]COD,:,,,,COD,[1]42[5],,,,,,,Johannesburg(JHB)[2]A2/O(8),,33%,8JHB,A2/O,1/3,2/3N,P[7]43A2/O[8],A2/O,,,,,,,,,A2/O(9):!,,∀#;∃,∀#;%,,;&,,,9A2/O5PHB,∀#DPB(DenitrifyingPhosphorusRemovingBacteria),PHB,,,,∀(PHB)#,DPB51DPB:!DPB/;∃DPB;%DPBPAO(PolyphosphateAccumulatingOrganisms),(PHB)[9]52DEPHANOXWanner1992PHB,N,P[10],DEPHANOX(10)DEPHANOX,24Vol29No32003A2/O(),,;P;,,;()10DEPHANOXDEPHANOX:!;∃COD/TKN,COD/N34[2];PA2/O;%,DEPHANOX,,,;&[11]53,,PHB,COD,,,1996Kuba(11)CODPHB,,PHB,,,,,90%100%,COD50%,30%50%[9]11,,NH4+,,NH4+NH4+,NH4+NH4+,DPBNH4+DPBNH4+,N100%,N(11[a]/([a]+[b])),,N,,P,P,P;,,PPHBNP,,,,6A2/O,,Vol29No3200325:(1),,;(2),,DEPHANOX,,,;(3),;(4),DPB,,DPB,参考文献1..:,19922GBortone,SMarsiliLibelli,etal.AnoxicphosphateuptakeintheDephanoxprocess.WatSciTech,1999,40(4-5):177~1853PCooper,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.:[].:,1996,49TKuba,etal.PhosphorusandnitrogenwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrificationinatwosludgesystem.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)13161156329Email:zangjh77@163com075024:2002618A2/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),,,,,,26Vol29No32003WATER&WASTEWATERENGINEERINGVol29No3March2003ABSTRACTSAmmoniaNitrogenRemovalfromRefuseLandfillLeachatebyZeoliteAdsorptionProcessJiangJianguoetal(6)((((Abstract:Facingtheproblemofhighammonianitrogencontainedrefuselandfillleachatetreatmentandtoreducethecostofthistreatment,alaboratorybenchscalestudyofzeoliteadsorptionprocesswasexploredforthefeasibilityandefficiency.BytheexperimentitwasfoundthataNH3-Nremovalof78%wasobtainedunderconditionsofzeolitegranulesizeof30~16ordersandthatthepotentialadsorptioncapacitywas155mgNH3-Npergramofzeolite.Incaseofthesameadsorptiontime,zeolitesizeandleachateflux,higherinflowNH3-Nconcentrationis,higheradsorptionspeedisobtained.ItisbelievedthatasadsorptionagentforNH3-Nremovalfromrefuselandfillleachate,zeolitecouldbefeasible.PilotStudyonPelletCoagulationProcessTreatingWastewaterinWaterworksHuangTinglinetal(9)((((((((Abstract:Apilotplantofpelletcoagulation(PC)processwithcapacityof10~395m3/hwascarriedouttotreatwastewaterofawaterworksinXi)an.TheexperimentalresultsshowthatPCprocess,whichischaracterizedwithhighhydraulicload,goodeffluentquality,andhighsludgeconcentration,canbewellusedtotreatwaterworkswastewater.Forthisfacilityincasewhentherawwastewaterhasmoisturecontentof9853%~9995%,thehydraulicload,effluentturbidityandmoisturecontentofthedrainedsludgeare445~1725mm/s,5~20NTUand938%~960%respectively.Theoutletsludgeofthisplantcouldbetransferdirectintodewateringmachine.ThedosagesofPAMandPAC(A1203)arecontrolledat22~47mgpergramofdrysludgerespectively.OnPowerConsumptionofCatalyseElectrolyticRemovalofCODandNH3-NfromRefuseLeachateWangMinetal(13)((((((((((((((((((((((((((((((((((((((((Abstract:TheimpactfactorsonthespecificpowerconsumptionandcurrentefficiencyofCODandNH3-Nremoval,suchasthematerialofelectrode,thecurrentdensity,thegapbetweenelectrodesandthespecificelectrolyticareaforelectrolytewerestudied.ThestudyprovedthatremovalrateincreasedandthespecificpowerconsumptionforCODandNH3-NremovalsdecreasedincaseofreducedgapbetweenelectrodesandadoptionofSPRanode.Alsohigherremovalswereobtainedincaseofhighercurrentdensityandspecificelectrolyticarea,however,thespecificpowerconsumptionincreasedatthesametime.AStudyontheInherentShortcomingsandCountermeasuresoftheA2/OProcessZhangJieetal(22)(((((((((Abstract:TheinherentshortcomingsofA2/Oprocess,thereintothecontrarycompetitionofnitrifyingbacteria,denitrifyingbacteriaandpolyphosphateaccumulatingorganismsfororganicloading,sludgeageandcarbonsourcesimpededthepromotionoftheirapplicationforN