化学混凝对UASB工艺处理低浓度生活污水的影响聂丽君

UASB(茂名学院,广东茂名　525000)　:UASB,UASB,,。UASB。SS,FeCl370mg/L,t(HRT)2h,UASBCOD50%～60%。:;UASB;:X703.1　　　:A　　　:1004-695X(2003)02-0037-02StudyonInfluenceofChemicalCoagulationonTreatmentofLow-concentrateSewagewithUASBProcessNIELi-Jun(MaomingCollege,Maoming,Guangdong525000,China)Abstract:SuspensionsundegradedsufficientlytendtocompileinUASBreactorduringthedisposeoflow-concentratesewagewithUASBprocess,whichleadstotheactivedecreaseofanaerobicsludgeexistinginparticlemorphology,thereforeaffectingthetreatmenteffectofUASBprocess.ChemicalcoagulationisappliedtopretreatsewageforstudyingitsinfluenceontherunningofUASBprocess,theresultsshowthatchemicalcoagulationcansuccessfullyremovetheSSininletwater,whenthedoseofFeCl3is70mg/L,HRTistwohours,andtheremovalrateofCODisabout50%～60%,satisfactoryresultsareobtained.Keywords:Chemicalcoagulation;UASBprocess;Sewage　　,[1,2],UASB(UpflowAnaerobicSludgeBlanket),[3],。,,UASB,,。UASB。SS,,0.1mm。、、、,。1　。UASB,,UASB。,1。COD,[4]。1　t/℃pHρ(CODt)/(mg·L-1)ρ(CODd)/(mg·L-1)ρ(SS)/(mg·L-1)11～256～8150～50080～20070～700　　:CODtCOD,CODdCOD。:2003-01-16;:2003-02-26(1971—),,,,,,,10。1.1　静态混凝实验,FeCl3,10%。,1L6。3716　220036,FeCl30,20,40,60,80,100mg/L。,,,,30min,COD。8,1。1　COD　1,FeCl3,COD,100mg/L,[5],,FeCl360mg/L,60～80mg/L,,70mg/L。1.2　动态混凝试验,20L。、、、、5,,。UASB,,,70mg/L,COD55%。,UASBt(HRT)4h2h。2。2　/min20310202050　:17min,2h。2,2COD,3。3　、CODCOD/(mg·L-1)COD/(mg·L-1)COD/%CODd/(mg·L-1)3792254015170mg/L,2　COD　COD44%,(55%),,;,。3,CODCODd,CODs,SS。,UASB。2　UASBUASB,3。,,UASB,70mg/L,,、CODCODd,,UASB,45。3　-UASB4　USAB、COD(下转第54页)3816　2.UASB20034《》(GB12348—90)《》(GB3096—93),。[2](PNC)、、,,。。,,A,C。C,。2　(1)　,。(2)　,。,。,。,、、。,。,,[3]。[1],,,。(3),　,,,。3　　,,。,。,。[][1]　,.[M].:,1997[2]　,,,.[M].:,1988[3]　GBJ87-85.[S](上接第38页)5　UASB、CODd　　70mg/L,UASB[t(HRT)=2h],COD50%～60%,CODd40%～50%。SS,UASB。3　　(1),FeCl360～80mg/L;(2)70mg/L,:COD,55%40%;(3)70mg/L,t(HRT)4h2h,UASBCOD50%～60%,CODd40%～50%,;(4)UASBCODCODs,SS,UASB。[][1]　.[M].:,1998.469-490[2]　Collivignarelli.Anaerobic-AerobicTreatmentofMunici-palWastewaterswithFull-ScaleUpflowAnaerobicSludgeBlanketandAttachedBiofilReactors[J].WatSciTech,1990,22:475-482[3]　,,.UASB[J].,2003,13(1):6-9[4]　《》.[M].3.:,1994.11[5]　,,,.[J].,1999,25(11):14-165416　2.20036