城市污水处理厂污泥两相与单相厌氧消化工艺的比较

3511()Vol.35No.11200711JournalofNorthwestA&FUniversity(Nat.Sci.Ed.)Nov.200731,2,3,1,4,4(1,710061;2,250014;3,643000;4,710000)[],,(HRT)1.25d,HRT11.10d,8%,2.0kg/(m3d),(COD)(VS)42.7%33.6%,VSCODVS,VFA[];;[]X705[]A[]167129387(2007)1120213205Comparisonofdigestiontechnologybetweenthesignalandtwo2phaseanaerobicofmunicipalsludgeZHANGLi2ping1,FULing2,ZHANGGe2hong3,FANXi1,CHENJun2chang4,HANChang4(1SchoolofEnvironmentalSciencesandEngineering,ChanganUniversity,Xian,Shaanxi710061,China;2SchoolofMunicipalandEnvironmentalEngineering,ShandongUniversityofArchitectureandCivilEngineeringInsititute,Jinan,Shandong250014,China;3DepartmentofArchitectureEngineering,SichuanPolytechnicSchool,Zigong,Sichuan643000,China;4DepartmentofTechnologyandEducation,XianConstructionCouncil,Xian,Shaanxi710000,China)Abstract:AccordingtothecharacteristicsofthesludgeofXiancity’swastewatertreatmentplant,thepaperadoptstwo2phaseanaerobicdigestiontotreatsludge,andcomparesitsresultswiththesignal2phaseanaerobicdigestionsoastoperfecttwo2phaseanaerobicdigestionprocessandoptimizedesignparameter.Someconclusionswereobtainedfromthetwo2phaseanaerobicdigestion.TheremovalefficiencyofCOD&VSis42.7percent&33.6percent,respectively,whentheacid2phaseis1.25d,themethane2phaseis11.10d,thesludgeofenteredis8percent,andtheorganicloadislargerthan2.0kg/(m3d).Thegasyieldandthegasproductionrateandthevolumeperculturevolumeperdayofthetwo2phaseanaerobicdigestionisbetterthanthatofthesignal2phaseanaerobicdigestion.Keywords:municipalsludge;two2phaseanaerobicdigestion;signal2phaseanaerobicdigestion,;2070,PholandGhosh[122]3[]2006210212[](2005212)[](1964-),,,,,E2mail:[e-mail][3],,[4212],[13][14],,,;[15]Therkelsen[16],,,,11.11.1.1112.5L1.1.2222.5L1Fig.1Flowchartoftwo2phaseanaerobicdigestionofmunicipalsludge2Fig.2Flowchartofone2phaseanaerobicdigestionofmunicipalsludge1.21.2.1,1.2.2,41.31.3.12,,,,4,20min,(330.5)1.3.21,,,,,4,20min,(350.5),(300.5)1.3.3;(1)0.2L,pH56.5,24h1,0.1L,301L,10d(2),0.5L,pH6.67.5,24h1,0.1L,351L,5d1.4,pH(ChemicalOxygenDemand,COD)(VolatileSolid,VS)(VolatileFatty412()35Acid,VFA)[17]COD:100,;VS;VFA:10,;pHpH;;;():,kg/(m3d),COD22.11,(Hydrau2licRestTime,HRT)1.25d8%,(VFA);,VFA,(VS),pH5.96,2,HRT,pH,,11.10d,8%,VFA6.17mmol/L,,VS,VS,HRT1.25d,HRT11.10d,8%,1(HRT)Table1Hydraulicresttimeofacid2phaseintwo2phaseanaerobicdigestionprocess/dHydraulicresttime/(kgm-3d-1)OrganicloadVFA/(mmolL-1)VolatilefattyacidpHVS/%Removalrateofvolatilesolid1.0033.5646.005.967.251.2526.8550.395.888.602.0016.7849.236.0710.683.3310.0743.956.3015.602(HRT)Table2Hydraulicresttimeofmethane2phaseintwo2phaseanaerobicdigestionprocess/dHydraulicresttime/(kgm-3d-1)OrganicloadVS/%RemovalrateofvolatilesolidVFA/(mmolL-1)VolatilefattyacidpHVS/(Lg-1)GasyieldperculturevolumeperdayCH4/%Methanecontent6.253.7121.258.017.451.1463.258.302.7824.597.017.451.8267.8811.102.0931.816.177.503.0072.182.22.2.1COD3,2.0kg/(m3d),COD;2.02.5kg/(m3d),COD;2.5kg/(m3d),COD,COD,COD2.02.5kg/(m3d),COD42.7%2.2.2VS4,2.0kg/(m3d),VS;,VS,VS33.6%2.2.3VFA56,(1.52.0kg/(m3d)),VFApH;(2.03.2kg/(m3d)),,VFA,VFA,VFA,VFA,VFA,(2.03.2kg/(m3d)),pH2.2.4VSVS7951211:612()359VS--.;--.Fig.9Volumeperculturevolumeperdaybycomparisonwiththesignalortwo2phaseanaerobicdigestiontechnology--.Signal2phaseanaerobicdigestionprocess;--.Two2phaseanaerobicdigestionprocess79,,,VS,VS,,,,,VS3(1),VSCODVS;VFA,pH,(2)(1.52.0kg/(m3d)),8%,;2.0kg/(m3d),8%,HRT1.25d,HRT11.10d,CODVS42.7%33.6%,[][1]PholandFG,GhoshS.Developmentsinanaerobictxeatmentprocesses[C]//CanaleRP.Biologicalwastetreatment:bio2technolbioengsympNo2.NewYork:IntersciencePublishers,1971:852106.[2]GhoshS,KlassDL.Two2phaseanaerobicdigestion[J].ProcessBiochem,1978,13(4):15224.[3]YeohBG.Twophaseanaerobictreatmentofcane2mo2lassesalcoholstillage[J].WatRes,1997,31(6):125121260.[4],.[J].,1999,12(4):27229.[5],,.[J].,2002,23(3):25228.[6],,,.[J].,2000,33(6):62265.[7],,,.[J].,2001,27(7):49251.[8],,.[J].,1994,7(2):44248.[9],,,.-[J].,2000,21(4):52256.[10],,.UASB[J].,2003(2):38240.[11],,.UASB[J].,2002,33(4):29231.[12].[J].,2000,17(2):51254.[13],,.[J].,1992,8(3):428.[14],,.[J].,1992,12(5):24225.[15].[D].:,1992.[16]TherkelsenHH,CarlsonOA.Thermophilicanaerobicdiges2tionofastrongcomplexsubstrate[J].JournalWPCF,1979,51:194921952.[17].[M].:,1998.71211: