城市污水厂活性污泥中胞外聚合物与省略艺运行及污泥沉降性能的相关性分析樊鹏超

37820178ActaScientiaeCircumstantiaeVol．37No．8Aug．2017No．2016YFC0401103No．51578016SupportedbytheNationalKeyＲesearchandDevelopmentProgrammeofChinaNo．2016YFC0401103andtheNationalNaturalScienceFoundationofChinaNo．515780161990—[e-mail]*[e-mail]1990—[e-mail]*[e-mail]10．13671/j．hjkxxb．2017．0024．2017．J．3782996-3002FanPCZengWJiZHetal．2017．CorrelationofextracellularpolymericsubstanceEPSinActivatedsludgeofmunicipalwastewatertreatmentplantstoprocessperformanceandsludgesettleabilityJ．ActaScientiaeCircumstantiae3782996-3002*“”1001242016-11-232017-01-152017-01-15ExtracellularpolymericsubstanceEPS．EPSEPS．EPS25%～63%21%～50%DNA．A2O2．PearsonEPSSludgeVolumeIndexSVIDNASVI．EPSEPS．EPS．EPS．、EPS．Pearson0253-2468201708-2996-07X703ACorrelationofextracellularpolymericsubstanceEPSinActivatedsludgeofmunicipalwastewatertreatmentplantstoprocessperformanceandsludgesettleabilityFANPengchaoZENGWei*JIZhaohuaPENGYongzhenNationalEngineeringLaboratoryforAdvancedMunicipalWastewaterTreatmentandＲeuseTechnologyBeijingUniversityofTechnologyBeijing100124Ｒeceived23November2016receivedinrevisedform15January2017accepted15January2017AbstractExtracellularpolymericsubstanceEPSisakeyfactoraffectingthepropertyofactivatedsludge．InthisstudythecomponentsofEPSinactivatedsludgeofmunicipalwastewatertreatmentplantsWWTPswerequantifiedandthecorrelationsofEPScomponentstowastewatercharacteristicsandoperationalconditionswereanalyzed．Ｒesultsindicatedthatproteinwasthemainconstituentaccountingfor25%～63%followedbyhumicacidwith21%～50%．DNAandpolysaccharideweretheleast．SludgesettleabilityandparticlesizedistributionwasobviouslydifferentintwowastewatertreatmentplantseventhoughthesameprocessA2Owasapplied．AccordingtothePearsonanalysisthereisnocorrelationbetweenEPScontentandsludgevolumeindexSVIorparticlesizedistributionundernormalandlimitedfilamentousbulkingconditions．YetthecontentofDNAandhumicacidbothpositivelycorrelatedwithSVI．ThehydraulicretentiontimeHＲToftheprocessnegativelycorrelateswithEPScontentbutthecontentoforganicmattersinwastewaterhadnoeffectonEPSandcomponents．Thecontentofpolysaccharidesignificantlycorrelatedwithbiologicalnutrientsremovalwhichcouldbeusedascarbonsourcesforbiologicalnutrientsremoval．SludgeretentiontimeSＲTaffectedtheratioofproteintopolysaccharide．ThereforewastewatercharacteristicsprocesstypesandoperationalconditionsaffectedthecomponentsandcontentofEPSandfurtheraffectedtheperformanceofWWTPs．KeywordsmunicipalwastewatertreatmentplantsextracellularpolymericsubstanceEPSactivatedsludgesludgevolumeindexSVIpearsonanalysis81IntroductionextracellularpolymericsubstancesEPS、、、Neyensetal．2004．EPSpH、、Flemmingetal．2001．EPSEPSEPSLB-EPSEPSTS-EPS．EPSLietal．2007．EPS、、Wilenetal．2003aYuetal．2009Liaoetal．2001．Martinsetal．2004Wangetal．2014Lealetal．2016．EPSSVIJinetal．20032004EPSAkkacheetal．2013EPSLiaoetal．2001．EPS．EPS．EPS、、．EPSEPS2010．EPS、Moreetal．2014．EPS．、．2Materialsandmethods2．13A、B、CACA2O--B．1．EPS8h．13Table1InfluentandeffluentcharacteristicsandoperationparametersofthreeWWTPsABCCODmg·L－1399±87552±112505±70BODmg·L－1189±43229±57287±73TNmg·L－169±865±567±5TPmg·L－15．86±0．467．13±1．106．87±0．86NH4+-Nmg·L－155±852±352±5CODmg·L－126±524±224±2BODmg·L－13±14±14±1TNmg·L－115±814±212±4TPmg·L－10．49±0．240．21±0．060．17±0．05NH4+-Nmg·L－12±23±21±1NO3－-Nmg·L－111±88±37±4NO2－-Nmg·L－10．52±0．760．43±0．391．66±2．01COD94%±1%95%±2%95%±1%BOD98%±1%98%±1%985±1%TN76%±14%78%±4%82%±7%TP91%±4%97%±1%97%±1%NH3-N96%±3%93%±5%97%±2%DOmg·L－12～2．262．2～2．31．06～4．83100%76%～112%94%～111%MLSSmg·L－13252～51623496～52722750～5522MLVSSmg·L－11654～34492010～32891855～3847HＲTd6．49～10．76．49～8．077．51～16．01SＲTd6．82～126．82～22．155．99～11．24T℃14．5～23．014．5～23．014．5～22．62．2EPS20132011．EPSFrolundetal．1996．Frolundetal．1996．EPS9000r·min－1799237．800r·min－14h．EPS、、DNA-LowaryLowaryDNADNA．MicrotracS3500USA0．02～2000μm．SludgeVolumeIndexSVI．SVI、MLSS、MLVSS2002．SPSS20．0、、EPS、．Pearson．Pearson－11－110．95%p＜0．05．3Discussionandresults3．13SVI1．SVI．SVI150mg·L－1．3．WWTP-ASVI107～220mg·L－1WWTP-BSVI90～181mg·L－1WWTP-CSVI49～147mg·L－1．A107SVI150～2502008B、C13SVIFig．1SVIofthreeWWTPsSVI．ACA2OA7．BSVI．2714．5～23℃．20℃．1SVISVI、．．3．2A2OACA2O2．222．5．5～500．00μm．WWTP-A36．10～47．98μmWWTP-C63．55～82．62μm．10%、50%90%WWTP-CWWTP-A．1WWTP-CWWTP-A．．2Fig．2Sizedistributionofdifferentialvolumepercent2WWTP-AA-8A-10．WWTP-CC-9C-8．．89928Jinetal．2003．2ACTable2ParticlesizedistributionforWWTP-AandWWTP-CMVad10bd50cd90dA-847．9813．9035．3890．94A-938．1114．4529．6967．7A-1036．1014．1229．0563．26C-863．5524．151．48116．4C-982．6234．4869．44147．1C-1077．2628．0461．65140．3aμmbd1010%cdμm．3．3EPS、、DNAEPS．33EPSEPS．EPS24．53～75．25mg·g－1VSS．6．17～43．18mg·g－19．99～19．99mg·g－10．97～6．76mg·g－1DNA1．88～11．75mg·g－1．3AEPSCBEPS．ACA2OEPSEPS．EPS28～56mg·g－1SS17～51mg·g－1SS5．7～40．0mg·g－1SSJinetal．2003Dominiaketal．2011．．EPS2～4mg·g－1VSS、7～12mg·g－1VSS、DNA5～9mg·g－1VSS2004．WangSBＲEPSEPSWangetal．2014．33EPSFig．3ComponentandcontentofEPSin27activatedsludgesamples999237．．EPS．BuggeMBＲ60～80mg·g－1SS6～10mg·g－1SS2～14mg·g－1SSBuggeetal．2013．MBＲ．25