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50g[1-2]。、、。。。。。。UASB[3-5]。MovingbedbiofilmreactorMBBR[6]。UASBMBBR。11.11UASB、MBBR。UASB5cm×5cm、90cm2.25L24±4℃1.29L。MBBRUASB+MBBR710055UASBMBBR。4UASBMBBR7.7h10.3hTCODSS77.8%92.5%75.7mg·L-117.3mg·L-198.7%1mg·L-1。0.32kgVSS·kgCOD-120%～40%。UASBMBBRX703A1000-3770(2009)09-069-042008-12-0107JK293“”IRT08531971－15809285181E-mailwangyi1003@sina.com1UASB+MBBRFig.1Schematicdiagramofexperimentalsetup UASBMBBR 35920099TECHNOLOGYOFWATERTREATMENTVol.35No.9Sep.,200969DOI:10.16796/j.cnki.1000-3770.2009.09.02114cm、3L10mm7mm0.9785g·cm-3500m2·m-350%2L。7L·d-1UASBMBBRHRT7.7h10.3h。UASBUASB。UASB20±2gSS·L-1。1.2UASB40gVSSSS0.6SVI33mL·g-1。MBBRA2/O。1.31。1.4SS、MLSS、MLVSSpHCODTKN-TP－NH4+-NPO43--P。[7]。。22.12.1.1CODTCOD2。UASBUASBTCOD。2TCODUASBTCOD。UASBTCOD56.1%UASBTCOD166mg·L-1。TCOD75.7mg·L-1。TCODUASB67.4%MBBR32.6%。TCODUASB。SCOD3。3UASBSCOD118mg·L-1113mg·L-1UASB。UASB[8]MBBRSCOD51.2mg·L-151.8%。SCODMBBR。2.1.2SSSS4。4UASB。UASBTCOD/mg·L-1SCOD/mg·L-1ρ(NH4+-N)/mg·L-1ρ(TN)/mg·L-1ρ(TP)/mg·L-1ρ(SS)/mg·L-1pH66227878.1113.911.56348.51523230.662.35.5887.737811352.183.78.92988.11Table1Thecompositionofwastewaterintheexperiment2TCODFig.2ChangeofTCODconcentrationwithtime0204060801001201400100200300400500600700TCOD/mg L d 020406080100120140050100150200250300 dSCOD/mg L 3SCODFig.3ChangeofSCODconcentrationwithtime35970SS67.6mg·L-177.3%。MahmoudUASBSS[9]。UASBSSSS。SS92.5%SS17.3mg·L-1。2.1.35、6。5UASBMBBRDO2.0～3.0mg·L-11.0mg·L-1。MBBRMBBR2～3。+。6UASBUASBMBBR。。2.22.2.1UASB0.3mm。MBBR。7。0204060801001201400100200300400500600700 d(SS)/mg L 4SSFig.4ChangeofSSconcentrationwithtime0204060801001201400102030405060708090(NH -N/mg L d 5NH4+-NFig.5ChangeofNH4+-Nconcentrationwithtime020406080100120140024681012(PO -P/mg L d 6PO43--PFig.6ChangeofPO43--Pconcentrationwithtime7aUASB7Fig.7Morphologyofsludgeinthecombinedprocess7bMBBRUASB+MBBR71135d30℃UASBSMASMA。SMA0.10gCOD-CH4·gVSS-1·d-1SMAPontesUASBSMA[10]UASBHRT。MBBR20℃MBBR20℃14mgNH4＋-N·gVSS-1·h-15～10mgNH4＋-N·gVSS-1·h-1。2.2.242d71～113dTCODCOD0.32kgVSS·kgCOD-1。0.40～0.55kgVSS·kgCOD-1UASB+MBBR20%～40%。3UASB＋MBBRUASBMBBR7.7h10.3hTCODSS77.8%92.5%75.7mg·L-117.3mg·L-1GB18918-2002。。0.32kgVSS·kgCOD-120%～40%。[1]Hudson,JA.Treatmentanddisposalofsewagesludgeinmid-1990s[J].ChartInstWaterEnvironManag.,1995,9:93-100.[2]SuJiang,YinguangChen,QiZhou,etal.Biologicalshort-chainfattyacids(SCFAs)productionfromwaste-activatedsludgeaffectedbysurfactant[J].WaterResearch,2007,41:3112-3120.[3]EForesti.Anaerobictreatmentofdomesticsewage:establishedtechnologiesandperspectives[J].WatSciTech.,2002,45(10):181-186.[4]RCLeitāo,JASilvaFilho,WSanders,etal.TheeffectofoperationalconditionsontheperformanceofUASBreactorsfordomesticwastewatertreatment[J].WatSciTech.,2005,52(1-2):299-305.[5]TarekAElmitwalli,MarcelHZandvoort,GrietjeZeeman,etal.Lowtemperaturetreatmentofdomesticsewageinupflowanaerobicsludgeblanketandanaerobichybridreactors[J].WatSciTech.,1999,39(5):177-185.[6],,,.[J].,2007,33(10):18-20.[7]《》.[M].4.:,2002.[8],,.UASB[J].:,2008,40(3):393-396.[9]MahmoudN,ZeemanG,GijzenH,etal.Solidsremovalinupflowanaerobicreactors:areview[J].BiorTech.,2003,90:1-9.[10]PPPontes,CALChernicharo,ECFrade,etal.PerformanceevaluationofanUASBreactorusedforcombinedtreatmentofdomesticsewageandexcessaerobicsludgefromatricklingfilter[J].WatSciTech.,2003,48(6):227-234.TREATINGMUNICIPALWASTEWATERANDREDUCINGEXCESSSLUDGEBYCOMBINEDPROCESSOFUASB+MBBRWangYi，ZhangYinzhong,PengDangcong（SchoolofEnvironmentalandMunicipalEngineering,Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China）Abstract:TheremovalefficiencyofpollutantandreductionofexcesssludgebyacombinedprocessofUASBandMBBRwerestudied.ThewastewaterfromDengjiacunSewageTreatmentPlantinXi'anwasadoptedasinfluent.Theexperimentresultofcontinuousoperationfor4monthsshowedthattheaverageremovalefficiencyofTCODandSSreached77.8%and92.5%respectivelywiththeaverageeffluentconcentrationofTCODandSSbeing75.7mg·L-1and17.3mg·L-1undertheconditionofHRTintheUASBandMBBRbeing7.7hand10.3hrespectively.Atthesametime,theaverageremovalefficiencyofam-monianitrogenreached98.7%withtheaverageeffluentconcentrationofNH4+-Nbelow1mg·L-1.Sotheaverageconcentrationofcarbonandammoniani-trogenintheeffluentattainedthedischargestandardofIIgrade.Ontheotherhand,theobservedyieldofsludgewas0.32kgVSS·kgCOD-1inthiscombinedsystemwhichmadethereductionofexcesssludgereached20%～40%comparedwiththeactivatedsludgeprocess.Keywords：combinedprocess;UASB;MBBR;municipalwastewater；sludgereduction35972