改善气液传质效率实现丝状菌膨胀污泥控制的方法李志华

93Vol．9No．320153ChineseJournalofEnvironmentalEngineeringMar．2015710055kLa。。。。X703A1673-9108201503-1067-05Filamentoussludgebulkingcontrolbyimprovinggas-liquidmasstransferefficiencyLiZhihuaZhangYunjiaoHeChunboZhuKechenKeyLaboratoryofNorthwestWaterＲesourcesEnvironmentandEcologyMinistryofEducationSchoolofEnvironmentalandMunicipalEngineeringXi’anUniversityofArchitectureandTechnologyXi’an710055ChinaAbstractInordertostudytherelationshipbetweenfilamentoussludgeandgas-liquidmasstransfereffi-ciencyinactivatedsludgesystemsthevolumetricoxygentransfercoefficientkLaoffilamentoussludgewithdifferentflocstructureweremeasuredandtheinfluenceofgas-liquidmasstransferefficiencyonfilamentousbul-kingcontrollingwasevaluated．Theexperimentalresultssuggestedthattheeffectoffilamentoussludgeongas-liquidmasstransferefficiencydependsmainlyonsettleabilityratherthanonthetotallengthoffilamentousbacte-ria．Whenfilamentoussludgebulkingwascausedbylowdissolvedoxygenthevolumetricoxygentransfercoeffi-cientcouldbeincreasedbyimprovingthefilamentousflocstructurei．e．eliminationoftheexternalconditionsthatcausedtheoxygendeficiencycouldbeobtainedbycontrollingtheflocstructureandthuseffectivelycontrolledthesludgebulking．Bymeansofimprovingthefilamentousflocstructureitcouldeffectivelyenhancetheoxygentransfercoefficientfromtheviewofmicrobeandthisfindingprovidesanewwayforfilamentousbulkingcontrol．Keywordsvolumetricoxygentransfercoefficientflocstructurewastewatertreatmentfilamentoussludgebulking51783032013KW22-012014－01－282014－04－011976—。[e-mail]1。。、、2。3。、、、、45。、9。6。7。。。8。11．1SBＲ4L50%。50mm110mm。。8h2min7min381min90min。1∶1、。COD、NH+4-N、TP。0．5mL9。1．21．2．1kLakLa725±0．5℃。300mL1mg/L6sC-tkLa。1．2．2SBＲ。DO＜1mg/L。。1。Tay10。。1Table1SubstrateofinfluentindifferentstagesdCODmg/LNH+4-Nmg/LTPmg/L1～92600604092～100100107100～1102002014＞110400402622．1。ⅠⅡ5d10d2000mg/L2、kLa。2ⅠⅡ。ⅡkLaⅠ。。11。。860132Table2EffectsofstarvationonmasstransferratekLamin－1SVImL/gmm/LcpSV30%Ⅰ0．43±0．014883061．9290Ⅱ0．49±0．023335051．62612．2a、c、e17、510d3。b、d、fbSBＲd、fA2/O。b、d、f2000mg/LkLa1．42±0．08、1．29±0．08、1．29±0．08min－1。33、2/3、1/3、kLakLa1。13kLa1kLa23。311a3。2cd。3ef。7。。。3Table3EffectsofmasstransferratebydifferentfilamentoussludgeSVImL/gmm/Lcpmg/LSV30%1a193136—150030b1020—1500152c282555．33．89350099d23140．452．173500813e247967．52．88400099f22012．452．724000881kLaFig．1VariationofkLawithdifferentsludgevolumefractions2．3、PAC。2。11。4A2/O5‰PAC4PAC。960193PACPAC。12。。4PACTable4EffectsofPAConmasstransferratekLamin－1SVImL/gSV30%1．291±0．07711022PAC1．293±0．034115232．4。。2SVI。2000mg/L。3a。2MLSS、SVIFig．2VariationofSVIandMLSSduringthewholeperiod≤1mg/L13。3Fig．3Microbialmorphololgyduringexperimentalperiod3b800mg/L450mg/L。COD100mg/L。4～5mg/L143cSVI150mL/g。。15。。31。07013。。2。、。。1SezginM．JenkinsD．ParkerD．S．Aunifiedtheoryoffilamentousactivatedsludgebulking．JournalofWaterPol-lutionControlFederation1978502362-3812JenkinsD．ＲichardM．G．DaiggerG．T．ManualontheCausesandControlofActivatedSludgeBulkingFoa-mingandOtherSolidsSeparationProblems．LondonCＲCPress200477-783ＲossoD．LarsonL．E．StenstromM．K．Surfactanteffectsonalphafactorsinfull-scalewastewateraerationsys-tems．WaterScienceandTechnology20065410143-1534．．200622111-13ZhaoJingyeZhenXiaomengGaoJun．Ｒesearchontrans-fercoefficientofoxygenicaeration．JournalofBeijingInsti-tuteofCivilEngineeringandArchitecture200622111-13inChinese5．．201031145-49ZouLianpeiZhaoHongtaoLiuZhirenetal．Ｒesearchonimpactofwaterqualityonoxygentransition．JournalofNorthUniversityofChinaNaturalScienceEdition201031145-49inChinese6SchulerA．J．JassbyD．FilamentcontentthresholdforactivatedsludgebulkingArtifactorrealityWaterＲe-search200741194349-43567．．20133462314-2318LiZhihuaFanChangqingWangXiaochang．Preliminarystudyoncharacteristicsofvolumetricoxygentransfercoeffi-cientingranularsludgesystems．EnvironmentalScience20133462314-2318inChinese8MartinsA．M．P．PagillaK．HeijnenJ．J．etal．Fila-mentousbulkingsludgeAcriticalreview．WaterＲesearch2004384793-8179．．2012333903-909LiZhihuaZengJinfengLiShengetal．Effectofsizeandnumberofaerobicgranulesonnitrificationanddenitri-fication．EnvironmentalScience2012333903-909inChinese10TayJ．H．LiuQ．S．LiuY．Microscopicobservationofaerobicgranulationinsequentialaerobicsludgeblanketreac-tor．JournalofAppliedMicrobiology2001911168-17511．EPS．2004244613-618ZhouJianLongTengruiMiaoLili．EffectofextracellularpolymericsubstancesEPSonsedimentationofactivatedsludge．ActaScientiaeCircumstantiae2004244613-618inChinese12．、．2010312273-281PengYongzhenWuLeiMaYongetal．AdvancesGranulationmechanismCharacteristicsandapplicationofaerobicsludgegranules．EnvironmentalScience2010312273-281inChinese13．．2009381345-1349ZuoJinlongWangShuyingPengYongzhenetal．StudyonpollutantremovalperformancewithlowDOandsludgemicro-bulking．ChineseJournalofEnvironmentalEngi-neering2009381345-1349inChinese14．．2006261049-51ZhouLiPengYongzhenSongJiaoetal．StudyontherecoveryofsettleabilityoflowDOfilamentousbulkingsludge．IndustrialWaterTreatment2006261049-51inChinese15．．20001625-8LongTengruiHeQiangLinGang．Ｒesearchontherela-tionshipsbetweenfilamentousorganismsandflocculatestructu