MBR处理城市垃圾渗滤液中污泥特性崔喜勤

()395JournalofFujianAgricultureandForestryUniversity(NaturalScienceEdition)20109:2009-10-14　　:2010-03-01:陕西省教育厅专项科研计划项目(02JK136);西安市工业科技攻关计划项目(GG200275).:崔喜勤(1977-),女,讲师,硕士.研究方向:水污染控制技术.MBR处理城市垃圾渗滤液中污泥特性1,1,　2,2(1.福建农林大学资源与环境学院,福建福州350002;2.西安建筑科技大学环境与市政工程学院,陕西西安710055):(MBR),、、、.,,10.4g·L-1;(ECP),、、、.:;(MBR);:X52:A:1671-5470(2010)05-0542-06StudyoncharacteristicsofsludgeintreatmentofmunicipallandfillleachateusingMBRCUIXi-qin1,LINJun-feng1,SHENHuan2,JINQi-ting2(1.CollegeofResourcesandEnvironment,FujianAgricultureandForestryUniversity,Fuzhou,Fujian350002,China;2.CollegeofEnvironmentMunicipalEngineering,Xi′anUniversityofArchitectureTechnology,Xi′an,Shanxi710055,China)Abstract:Theaimofstudyonalandfillleachatetreatmentwastodeterminetheoperationeffectofmembranebioreactor(MBR)intheconditionofnosludgedischarge.Thestudywasdesignedtoinvestigatesludgeconcentration,sludgesettleabilty,granulardistri-bution,sludgeactivityandbiologicalphasevariation.Theresultsindicatedthatthesteady-statesludgeconcentrationinMBRin-creasedwithvolumeload,andthehighestsludgeconcentrationreached10.4g·L-1.Theslow-biodegradablesubstancessuchasextracellularpolymers(ECP)wereaccumulatedwiththerunningtimeincreasedinMBR,whichresultedindegradationofsludgesettleabilityandsludgeactivity,reductionofsludgegranulardistribution,andbiologicalphasebecomingworse.Keywords:landfillleachate;membranebioreactor(MBR);characteristicsofsludge(membranebioreactor,MBR)[1].,MBR,,MBR,,MBR.、、、、、、、[1].,MBR10,,,MBR;MBR,,[1-2].,MBR,,,[3-4],MBR,,MBR.、、、、(extracellularpolymers,ECP).1　1.1　　　,,,0.18μm、DOI:10.13323/j.cnki.j.fafu(nat.sci.).2010.05.0051　MBRFig.1　Experimentalset-upofMBR0.6m2.()、,3、38L.,,3/2.,,,16.2kPa.,,300%.1..、5g·L-1.72h,(dissolvedoxy-gen,DO)0.5mg·L-1,DO2.0mg·L-1,pH7.0.1.2　,,3,1.1　1)Table1　WaterqualityoftheleachatefromJiangcungoumunicipalsolidwastelandfillsiteinXi′anCODmg·L-1BOD5mg·L-1BOD5/CODpHNH+4-Nmg·L-1mg·L-1SSmg·L-103-1911088-1459387500.608.0282615000123506-175280-695619580.328.2268822300101408-293108877.70.288.22357240001151　　1)COD,BOD5,SS.1.3　2.2　Table2　Monitoringindexesandanalysismeans　　　　　1　　　[5]2[5]3　　(TTC)[6]4　　　/5　　　　　—[7]6　　　　[7]7　/8　　　　/2　2.1　MBR2.COD,81d,COD;81d,COD,.70d,0.76kg·m-3·d-1,,·543·　5:MBR;70-816.3g·L-110.4g·L-1,1.48kg·m-3·d-12.22kg·m-3·d-1,1.89kg·m-3·d-1,,;1.45kg·m-3·d-1,8.6g·L-1.,.Lv1-Lv40.76、1.89、1.45、1.11kg·m-3·d-1.2　Fig.2　Variationofsludgeconcentrationwithtime,,1.11kg·m-3·d-1,5.6g·L-1.4、5,.(1),,BOC5/COD0.60.28,,BOD0.019kg·kg-1·d-1(0.20-0.4kg·kg-1·d-1),,,.(2).2(mixedliquorvolatilesuspensionsolid,MLVSS)(mixedliquorsuspensionsolid,MLSS).3　SV30SVIFig.3　VariationofSV30andSVIwithtime2.2　MBR　　3,40,,30min(settlingvolume,SV30)33.4%,(sludgevolumeindex,SVI)64.6mL·g-1;48-54,,SVI84.7mL·g-1166mL·g-1,,SVI;60,,,,SV3097.2%,SVI114.1mL·g-1;,,(solublemicrobialproducts,SMP)ECP[1],MBRSMPECP,501.25mPa·s-11962.47mPa·s-1、42.10μm27.62μm(6),,,SV30100%,SVI180mL·g-1.,,MBR,.2.3　MBR,,.,·544·()39　MLVSS/MLSS、.2.3.1　MLVSS/MLSS　(MLVSS/MLSS).4MLVSS/MLSS,130dMLVSS/MLSS0.76,,1300.740.64.,,;,MLVSS/MLSS,MLSS,MLVSS/MLSS.2.3.2　污泥脱氢酶活性　5.,.,;,[8],,,.4　MLVSS/MLSSFig.4　VariationofMLVSS/MLSSwithtime5　Fig.5　Variationofdehydrogenaseactivitywithtime　　,5,,.,[9],,[9],,.,,,05-2206-26,6096mg·L-11173mg·L-13169mg·L-1,(MLVSS)12.1μg·mg-1·h-15.6μg·mg-1·h-110.3μg·mg-1·h-1.2000-2500mg·L-1,,,.2.3.3　污泥比耗氧速率　(specificoxygenuptakerate,SOUR),,SOUR.6　SOURFig.6　VariationofSOURwithtime　　6,SOUR,2,2Lv2,,SOUR;2Lv3,,SOUR,,SOUR.[10],.5、6,·545·　5:MBR07-10(130),SOUR,,,130.,6,SOUR,SOUR,.,,-H2,,.,,SOUR.2.4　ECPECP,(10000)[11],,0.2-5.0[12],、、.ECP,ECP[13-14].196ECP、(MLVSS),3.3,(1)ECP,19667.8%72.9%;(2)196ECP,1.8、2.61.8;ECP;(3)ECP,15.7%22.4%,,52.1%50.5%.ECP.ECP:(1),14000mg·L-13000mg·L-1,BOD5/COD0.60.28,,ECP;(2)ECP;(3)MBRECP,.3　ECPTable3　VariationofextracellularpolymerswithtimeECPmg·g-1mg·g-1ECP/%mg·g-1ECP/%161.425.415.784.152.1196295.866.422.4149.450.5　　,3SV30SVI,ECP.7　MBRFig.7　Variationofthemeansizeofsludgeparticulatewithtime2.5　MBR　　(:LS-POP),7.7,46.39μm,,5042.1μm27.62μm,.MBR[4,15].,;,,(1),、、ECP,,ECP,.·546·()39　2.6　,..,,,,;,,,,,、、;,,,,,.3　(1)MBR,;,.(2)VSS/SS、SOUR3MBR,,,MBR.(3)MBR,46.39μm27.62μm.(4),,、、,.(5)MBRSMPECP,,MBR.[1],.[M].:,2002.[2],,.[J].,2003,35(3):307-310.[3],.[J].,2008,34(7):46-51.[4],,.SMSBR[J].,2002,18(2):18-21.[5].[M].:,2002.[6],,.[M].:,2002.[7].[M].:,2001.[8]HUANGX,LIUR.Behaviourofsolublemicrobialproductsinamembranebioreactor[J].ProcessBiochemistry,2000,36:401-406.[9],,,.[J].:,2005,4(12):518-522.[10],,,.[J].,2008,48(3):323-328.[11]MORGANJW,FORSTERCF,EVISONL.Acomparativestudyofthenatureofbiopolymersextractedformanaerobicandactivatedsludges[J].WarRes,1990,24(6):743-753.[12]FROLUNDB,PALMGRENR,KEIDINGK,etal.Extractionofextracellularpolymersfromactivatedsludgeusingacatioex-changeresin[J].WatRes,1996,30(8):174-175.[13]FORSTERCR.Activatedsludgesurfacesinrelationtothesludgevolumeindex[J].WaterResearch,1971,5:861-870.[14]MAGARAY,NAMBUS,UTOSAWAK.Biochemicalandphysicalpropertiesofanactivatedsludgeonsettingcharacteristics[J].WaterResearch,1976,10:71-77.[15]ZHANGBR,YAMAMOTOK,OHGAKIS,etal.Flocsizedistributionan