低温下处理生活污水的厌氧膜床水解作用研究

27420074ActaScientiaeCircumstantiaeVo.l27,No.4Apr.,2007:(No.2002Z1-E0022);(No.2000-001)SupportedbytheNaturalScienceFoundationofGuangzhouMunicipalScienceandTechnologyBureau(No.2002Z1-E0022)andPollutionPreventionandControlSpecialFoundationofGuangzhouMunicipalEnvironmentProtectionBureau(No.2000-001):(1973)),,();*(),E-mai:[e-mail]:WANGLili(1973)),female,lecturer(Ph.D.);*Correspondingauthor,E-mai:[e-mail],,.2007.[J].,27(4):554-561WangLL,LingX,HuYY.2007.Thehydrolyticperformanceofspecialanaerobicfilmbed(SAFB)ondomesticsewagetreatmentatlowtemperatures[J].ActaScientiaeCircumstantiae,27(4):554-561王立立1,凌霄2,胡勇有3,*1.暨南大学环境工程系,广州5106322.广东省城乡规划设计研究院,广州5100453.华南理工大学环境科学与工程学院,广州510640:2006-08-02:2007-03-01:500m3#d-1(SBAF)-(BAF),,.:(COD200mg#L-1).22~24m3#h-1(HRT=5.8~6.4h)13~15e.(SCOD/TCOD)40%,,SCOD/TCOD78%,.SCOD/TCOD,.,22m3#h-1,13e6e,SCOD/TCOD50%,TCOD60%24%.10~13e,20~22m3#h-1(HRT=6.4~710h),.:(SAFB);;;:0253-2468(2007)04-0554-08:X703.1:AThehydrolyticperformanceofspecialanaerobicfilmbed(SAFB)ondomesticsewagetreatmentatlowtemperaturesWANGLili1,LINGXiao2,HUYongyou3,*1.DepartmentofEnvironmentalEngineering,JinanUniversity,Guangzhou5106322.GuangdongUrban&RuralPlanningDesignInstitute,Guangzhou5100453.CollegeofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510640Received2August2006;accepted1March2007Abstract:Anewtechniquetotreatlow-strengthdomesticsewagehasbeendevelopedthroughafullscaledemonstrationprojectinSouthChina.Anaerobicpre-treatmentwasinvestigatedinaspecialanaerobicfilmbed(SAFB)-Biologicalaeratedfilter(BAF)withadailytreatmentcapacityof500m3.ThehydrolytictransformationofsuspendedorganiccompoundbytheSAFBatlowtemperatures,andtheimpactoftemperatureandhydraulicloadingonSAFBperformancewereobserved.TheresultsindicatethattheSAFBwassuitableforlow-strengthdomesticsewagetreatmentevenwhentheinfluentaveragetotalchemicaloxygendemandwaslessthan200mg#L-1.ThebiodegradationofrawsewagewasenhancedbythehydrolyticconversionbytheSAFB.Throughhydrolysis,theaverageratioofsolublechemicaloxygendemand(SCOD)tototalchemicaloxygendemand(TCOD)increasedfrom40%to78%wheninfluentflowratewas22~24m3#h-1andtemperaturewas13~15e.TemperaturechangehadalargeeffectontheeffluentSCODtoTCODratio,andtheinfluentwaterquantityandthehydraulicloadingalsoinfluencedtheSCODtoTCODratio.Underroughlyconstantinfluentwaterquantityataflowrateof22m3#h-1,whenthetemperaturedroppedfrom13eto6e,theeffluentSCODtoTCODratioreducedby50%,andtheremovalrateofTCODalsodroppedfrom60%to24%.However,whenthetemperaturewas10~13e,thehydrolysisprocesscouldbeimprovedbydecreasingtheflowrateto20~22m3#h-1andprolongingthehydraulicresidencetimeto6.5~710h.Keywords:specialanaerobicfilmbed(SAFB);hydrolysis;lowtemperature;domesticsewage4:1(Introduction),,(Lettingaetal.,2001).,(5~15e)(Anthonyetal.,1998;Halalshehetal.,2005).,(UASB)(,2001;,2005;,2005a).,,(,2005b).,,,,(Mironetal.,2000).,,,,COD.UASB(COD200mg#L-1),,pH,(,2002).,,UASB,SSUASB(Uemuraetal.,2000;Elmitwallietal.,2002a).Elmitwalli(2002b)(AnaerobicFilter,AF)(AnaerobicHybrid,AH),4h13e,AF.AF,,,,.,,(,2005;,2005),.(,2002;,2004),UASB,CODSS,,.,-(SpecialAnaerobicFilmBed,SAFB),(Biologicalaeratedfilter,BAF).BAF(,2003;HuYY,2005;,2006),BAF(,2006),SAFBBAF.500m3#d-1SAFB-BAF,6,SAFB,SAFBSAFB,SAFB.2(Materialsandmethods)2.1工艺流程及SAFB设计参数SAFB-BAF,500m3#d-1,SAFB5.6h,140m3,6.0m@5.0m@5.2m.,SAFB(),BAF,(GB18918-2002)B.,1.1Fig.1Basicflowchartofthedemonstrationproject555271700mm700mm10mm,,,.,,,,,.,(20024~20027),(20029~20031)(20034~20037).,.2.2进水水质,,,1.1Table1CharacteristicsoftheinfluentsewageCOD/(mg#L-1)BOD5/(mg#L-1)/(mg#L-1)TN/(mg#L-1)TP/(mg#L-1)SS/(mg#L-1)pH48.2~284.818.8~118.98.24~44.313.5~53.41.14~4.6237~1836.5~7.52.3测试方法和仪器CODBOD5SSTNTP(,2002);COD(SCOD)0.45Lm;pHORP()E+HceraliquidCPS41-1AB2GSA.3(Results)3.1SAFB的挂膜及无回流阶段的运行情况SAFB.(6~7),,.1,COD80mg#L-1,22~18m3#h-1,.,,COD150mg#L-1,16~18m3#h-1(HRT8~9h),,21d,SAFBCOD50%,SAFB.SAFB5,,,.9~11,23e,32~40m3#h-1,34.2m3#h-1,SAFB3.5~415h.12~1,12e,6e,20~28m3#h-1,23m3#h-1,SAFB5~7h.SAFBORP-25~-85mV.3,2.2SAFBTable2OperationresultsofSAFBduringthenon-recirculationperiod(Parameters)(Averageinfluent)/(mg#L-1)09~11(23e)12~01(12e)SAFB(Averageeffluent)/(mg#L-1)09~11(HRT=3.5~4.5h)12~01(HRT=5~7h)SAFB(Averageremovalrate)09~11(HRT=3.5~4.5h)12~01(HRT=5~7h)COD97.9138.349.176.249.9%44.9%BOD560.384.728.752.652.4%37.9%SS92.5116.418.940.179.6%65.5%14.220.89.7914.931.1%28.4%TN21.123.517.520.816.3%11.5%TP2.671.542.321.3913.1%9.7%5564:2,SAFB,.,,12~1SAFB9~11,SAFB,SAFB.3.1.1SAFB对悬浮物的去除效果SAFB.,SS,75%SAFB,2.12,SS(72~183)mg#L-1,SAFBSS.,,,.2SAFBFig.2SSovertimeintheSAFB3SAFBCODFig.3VariationofCODinSAFB3.1.2SAFB对COD及BOD5的去除效果,SAFB34.,SAFBCOD40%~60%,SAFB.SAFBBOD565%.,121,,SAFB,SAFB.4SAFBBOD5Fig.4VariationofBOD5inSAFB3.2低温下SAFB对难溶有机物的转化3.2.1温度和水力负荷冲击对SCOD/TCOD的影响.,,,/0,,(Eelmitwallietal.,2001).SAFB,(SCOD)(TCOD).,121,SAFBTCODSCOD,SAFB.(121),,(5,6)..22m3#h-1,13e6e,SCOD/TCOD87.5%36.5%,TCOD60%24%.SAFB.SAFBSCOD/TCOD,SAFB55727.10e,.11eSCOD/TCOD26.6%,28m3#h-124m3#h-122m3#h-1,SCOD/TCOD26.7%46.7%,TCOD5.5%18.8%,32.8%46.1%.10e,SCOD/TCOD6