UASB汤金如 骈迎春 沈希光( 455000) ,COD,,(7-30℃)COD、、(VFA)。,16.2-25℃、pH6.6-8.2,UASB。,COD65%,UASB。 UASB COD StudyontheFeasibilityofLowConcentrationofMunicipalSewageTreatmentbyUASBReactoratLowTemperatureTANGJin-ru BIANYing-chun SHENXi-guang(AnyangMunicipalEngineeringDesign&ResearchInstituteCo.,Ltd. Anyang,Henan455000)Abstract TheconstantvolumepumpisusedtosendwaterandcontrolCODconcentration,withnochangeofflow;anditalsoconductsre-searchesontheremovalrateofCOD,macroscopicactivityofanaerobicmicroorganism,VFAandsoonatlowtemperature(7-30℃).There-sultsshowthatUASBcanrunwellandefficientlyatlowtemperatureof16.2-25℃withoutabruptchangeandwithpHvalueof6.6-8.2,inwhichmethanebacteriaproducedcanmaintainhigheractivityandtheremovalrateofCODstabilizesabove65%.SoitisprovedthatusingUASBtotreatlowconcentrationoforganicwastewaterisalsofeasible.Keywords UASB(up-flowanaerobicsludgebed) lowtemperature removalrateofCOD alkalinity (UASB),、、、、、、[1]。,。UASB。1 1.1 1。UASB100mm,2.5m,20L,16L。UASB,,,。1 1.2 ,,(1)。COD,gCOD0.1mL,NaHCO3。1 /(g·L-1)/(mg·L-1)20ZnCL215004(NH4)Mo7O24·4H2O1500KH2PO40.4ALCL31500MgSO4·7H2O1CuCL21500FeSO4·7H2O0.2HBO31500CaCL2()0.4CoCL2·6H2O1500 NiCL21500 MnSO4·H2O15001.3 ,0.85L/h、HRT14.1h,3-11,7-30℃,COD、、VFA,。1.4 CODHH-5;pHTPX-90ipH;-(CaCO3mg/L);VFA;。2 2.1 COD,。、CODCOD2。2,COD900mg/L,COD7-13.5℃,100-554mg/L,51.05%·28· IndustrialSafetyandEnvironmentalProtection 2009351January2009-76.15%;14℃COD,80-300mg/L,69.62%-90.03%。14℃60%,;14℃COD64%,。2 COD2.2 ,CO2,。,10-15℃,1-2[2]。3。3,,。14℃,,,;14℃,,2.86L/h,。3 ,,,,,,2-3℃。2.3 (VFA),。VFA,,VFA,。VFApH、ORP1-2d,VFA。VFA4。4,15.5℃VFA80mg/L,,,15.5℃VFA,80mg/L。2.4 pHVFACO2,CO2,4 VFACO2。、5。,,,CO2,。5 pH[3],pH6.6-8.2,COD、。pH,,pH,,,pH,pH8.2。22℃20h,pH6.5,,,。3 (1)COD,14℃COD51.05%-76.15%,,。14℃69.62%-90.03%。(2)VFA,15.5℃,VFA,,。(3)7-25℃,pH6.6-8.2。[1],,.UASB.(),2006,22(1):133-136.[2],..:,2003.121-122.[3],,.UASB.,2006,35(1):18-20.[4],..,2005,21(4):46-47.[5]GarciaCalderon,etal.Comparisonofthreesupportmaterialsforanaero-bicfluidizedbedsystems.BiotechnolLett,2002,18(6):731-736. 汤金如,女,1980年生,河南安阳人,助理工程师,硕士研究生,主要从事市政工程设计工作。(:2008-07-14)·29·