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刘蕾1,张立国2,尹军3,刘春峰4(1.华南理工大学环境科学与工程学院,广东广州510006;2.华南师范大学化学与环境学院,广东广州510006;3.吉林建筑工程学院水污染控制与资源化利用吉林省重点实验室,吉林长春130021;4.延边大恩建筑工程勘测设计有限公司,吉林延吉133000):分别采用两种不同来源的剩余污泥以及剩余污泥与厨余垃圾的混合物进行两相厌氧消化,考察了不同有机质含量污泥的中温厌氧消化性能结果表明,添加厨余垃圾后系统产酸相的VFA/BA值约为0.05,三个系统产甲烷相的稳定性较好随着HRT的延长,各系统对VS和TCOD的去除率均逐渐升高,当HRT为20d时,混合系统对VS与TCOD的去除率达到最大,分别为47.9%和49.2%,显著高于其他两个系统随着HRT的延长,各系统的SMA活性逐渐提高,而且产气中的甲烷含量也随之增加研究表明,在有机质含量偏低的剩余污泥中添加有机固体废物,不仅可以提高对有机质的去除率,还可以提高沼气产量:厌氧消化;两相;剩余活性污泥;厨余垃圾:X703:A:1000-4602(2011)03-0029-04TwophaseAnaerobicDigestionofWasteActivatedSludgewithDifferentOrganicContentsLIULei1,ZHANGLiguo2,YINJun3,LIUChunfeng4(1.CollegeofEnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510006,China;2.SchoolofChemistryandEnvironment,SouthChinaNormalUniversity,Guangzhou510006,China;3.JilinProvinceKeyLaboratoryofWaterPollutionControlandResourcesReuse,JilinArchitecturalandCivilEngineeringInstitute,Changchun130021,China;4.YanbianDaenArchitecturalEngineeringSurveyandDesignCo.Ltd.,Yanji133000,China)Abstract:Twotypesofwasteactivatedsludge(WAS)andkitchengarbagewereusedtopreparetheWASsampleswithdifferentorganiccontents,andthedigestionefficienciesofpreparedsampleswereinvestigatedusingmesophilictwophaseanaerobicdigestion(TPAD)process.Theexperimentalresultsshowthattheratioofvolatilefattyacidsandbicarbonatealkalinity(VFA/BA)inacidogenicphaseis0.05forthesystemwiththeadditionofkitchengarbage,andthethreesystemshavegoodstabilityinmethanogenicphase.TheremovalratesofVSandtotalCODareincreasedwithincreasinghydraulicretentiontime(HRT).ThemaximumremovalratesofVSandtotalCODinthemixedsystemareachieved(47.9%and49.2%respectively)whentheHRTis20d,significantlyhigherthanthoseinothertwosystems.Thespecificmethanogenicactivity(SMA)andmethanecontentinbiogasarebothincreasedwithincreasingHRT.TheadditionofkitchengarbageintotheloworganicWAScanimprovebothorganicremovalefficiencyandbiogasyield.Keywords:anaerobicdigestion;twophase;wasteactivatedsludge(WAS);kitchengarbage29第27卷第3期2011年2月中国给水排水CHINAWATER&WASTEWATERVo.l27No.3Feb.2011,,50%~70%,(60%~80%),,,,,[1,2],[3],[4],BNR,(VS/TS)[5],(VS/TS70%~84%)[6],VS,1材料与方法1111Tab.1PhysicochemicalcharacteristicsofsludgeandkitchengarbageusedintestpH6.906.875.92CaCO3/(mgL-1)193172216VFA(HAc)/(mgL-1)34.24.2302TS/(gL-1)38.539.9162VS/(gL-1)21.224.6152.3VS/TS0.550.620.92TCOD/(gL-1)29.834.7185.8SCOD/(gL-1)0.060.278.6TOC/(gL-1)9.210.475.4TKN/(gL-1)1.731.864.1C/N5.35.618.4,TS15%~20%,VS/TS0.85~0.93,,VS/TS0.69~0.72;VS/TS0.61~0.65;,,VS/TS0.53~0.5612:(VS/TS=0.55)(VS/TS=0.62)(13,VS/TS=0.7),HRT,,HRT2结果与讨论21pHpH,pH,pH,pH6.8~7.2,pHpH,22HRTpHTab.2VariationsofpHinacidogenicphaseandmethanogenicphaseatdifferentHRTsHRT/d106.346.355.837.157.246.94156.566.235.867.277.317.12206.786.535.977.437.407.202,HRT,pH,HRT;pH,,NH+4-NCO2,pH;pH,HRT,(TCOD76.8g/L),C/N(9.1),,,HRT,pH,pH,C/N,pH,30第27卷第3期中国给水排水(BA)[7]HRTVFA,11HRTVFAFig.1VariationsofalkalinityandVFAinacidogenicandmethanogenicphaseatdifferentHRTs1,HRT,,,,3500~4500mg/L,VSC/N,,,VFA,,pH,(VFA/BA0.05)VFA,VFA/BA0.017~0.022HRT,VFA,,VFA,VFA98~123mg/L,VFA34~68mg/LVFA/BA0.024,VFA/BA0.05,23VSTCOD,,TCODVS,VSTCOD,33Tab.3RemovalefficienciesofVSandTCODatdifferentOLRsHRT/d101520101520101520OLR/(kgVSm-3d-1)2.121.411.062.461.641.235.653.772.83VS/(gL-1)16.215.114.617.416.916.035.732.529.4TCOD/(gL-1)23.121.020.424.223.622.448.242.939.1VS/%23.528.631.329.431.434.936.842.447.9TCOD/%22.429.531.630.332.135.437.244.149.23,OLR,VSTCOD,VSTCOD,TCODVSHRT,,31刘蕾,等:不同有机质含量剩余污泥的两相厌氧消化研究第27卷第3期HRT10d,VSTCOD5.9%7.9%C/N(5.35.6),,HRT,,[8],C/NVS/TS,24,,()SMA,,SMA,10%,,5%;60%(4)4SMATab.4SMAandmethanecontentofmethanogenicphaseatdifferentOLRsHRT/d101520101520101520SMA/(Lg-1VSd-1)0.280.290.310.300.310.330.320.330.35/%62.465.269.463.666.468.656.859.363.24,HRT,SMA,HRT,SMA,,,SMA,SMA,,,,H2CO23结论,VFA/BA0.05,VFA,VFA/BA0.024,HRT,VSTCOD,VSTCOD,TCODVSHRT,SMA,HRT,SMA,,:[1]EkamaGA,SotemannSW,WentzelMC.Biodegradabilityofactivatedsludgeorganicsunderanaerobicconditions[J].WaterRes,2007,41(2):244-252.[2],.[J].,2002,20(3):8-12.[3]SoleraR,RomeroLI,SalesD.Theevolutionofbiomassinatwophaseanaerobictreatmentprocessduringstartup[J].ChemBiochemEngQ,2002,16(1):25-29.[4]GhoshS,BuoyK,DresselL,etal.Pilotandfullscaletwophaseanaerobicdigestionofmunicipalsludge[J].WaterEnvironRes,1995,67(2):206-214.[5]NielsenB,PetersenG.Thermophilicanaerobicdigestionandpasteurisation.PracticalexperiencefromDanishwastewatertreatmentplants[J].WaterSciTechno,l2000,42(9):65-72.[6]BolzonellaD,InnocentiL,CecchiF.BNRwastewatertreatmentsandsewagesludgeanaerobicmesophilicdigestionperformances[J].WaterSciTechno,l2002,46(10):199-208.[7]MasseL,MasseDI,KennedyKJ.Effectofhydrolysispretreatmentonfatdegradationduringanaerobicdigestionofslaughterhousewastewater[J].ProcessBiochem,2003,38(9):1365-1372.[8]BouallaguiH,TorrijosM,GodonJJ,etal.Twophaseanaerobicdigestionoffruitandvegetablewastes:bioreactorsperformance[J].BiochemEngJ,2004,21(2):193-197.:(1979-),,,,E-mail:liulei97@126.com:2010-08-2732第27卷第3期中国给水排水