消化液回用的两段厌氧法处理厨余垃圾及其酸化相的研究

上海交通大学硕士学位论文消化液回用的两段厌氧法处理厨余垃圾及其酸化相的研究姓名：史红钻申请学位级别：硕士专业：环境工程指导教师：蔡伟民20050110VFA13.97g.kg-1TS.d-1TS72.26%0.29L/gTSpHpHORPC/NHRT1.6g/LpHpHVFApHpHpH7pH7VFA35.1gVFA/LTS65.3%C/NpHpHpHC/N34:1ORPORPHRT20(TS)140g.L-17gTS.L.d-1VFA15.1g.kg-1TS.d-1pHORPC/N-iii-ABSTRACTThetwo-stage,batchandwetanaerobicdigestionwithliquorrecyclewasfirstlystudiedinthispaperusingamixtureofkitchenwastesasthedigestionsubstrate.Comparedtotheordinarytwo-stagedigestion,theexperimenthadagoodeffectandtheoperationalexpenseswerelow.About13.97g.kg-1TS.d-1acidificationefficiencyand72.26%TSremovalratewereattainedintheacidificationreactor.About0.29L/gTSbiogasyieldwasachievedinthemethanogenicreactor.TheuseofsecondstagedigestereffluenttoimprovepHintheacidogenicreactorwassatisfactoryandthelossofmicroorganismwasdecreased.Accumulationofammoniatoxicitywasnotobserved.Acidificationisthemainprocessintheanaerobicdigestion.Theefficiencyoftheacidificationdependsontheoperationalcondition,suchaspHORPC/NHRTandsoon.Itwasimportanttocontroltheacidproductionintheanaerobicdigestion.Theamountofthemicroorganismhasaneffectonthebacteriumspecies.Differentamountofinoculatewasstudied.Theoptimalamountofinoculatewas1.6g/L.TheselectiveproductionofkitchenwastesbyanaerobicacidogenesiswithpHcontrolwasexamined.TheresultshowedthattheproductspectrumintheacidreactorstronglydependedontheculturepH.AceticandlacticacidwerethemainproductsunderdifferentculturepH,whilepropionicacidwasapparentlyproducedunderthebasiccondition.TheoptimumpHwas7.Underthiscondition,theproductionrateofVFAwas35.1gVFA/L,andtheremoverateofTSwas65.3%.Inordertoreducetheexpenseoftheoperation,theregulationoftheC/Nwasconsidered.TheresultshowedthatthetimetoarriveatthestablestagewaslessenedbyregulatingC/N,andtheoptimalC/Nwas34:1.TheeffectofthedifferentORPontheacidificationwasdesigned.TheresultshowedthatORPaffecttheefficiencyoftheacidification.ThelacticacidwasthemainproductsunderdifferentORP.Incaseofthemetaltoxicity,itwassuggestedthatitwasnotnecessarytoadjustORP.Basedonthepresentstudy,tolookfortheoptimumoperationalcondition,weexperimentallyexaminedtheHRTandOLReffectsontheacidification.ThetwentydayswasregardedastheoptimalHRTand140g.L-1wasconsideredtheoptimalinfluentTS.Underthisgoodoperationalcondition,the7gTS.L.d-1loadingrateandthe15.1g.kg-1TS.d-1VFAproductionratewereachieved.Keywords:kitchenwastes,digestionliquorrecycling,pH,ORP,C/N,inoculate2005116-iv-ASBRCODCOD(t)CODCOD(S)CODN-NH4+OLRORPSRTTKNTKN(t)TKNTKN(s)TKNTSTSSTVSVFAVSS-1-1[1]1.19017.85t489.04[2]358.37201087.4t19902010201370t21077kg2010652100211989[3]“”“”[4]-2-“”[5]1.21.2.11.90%(21003100)kJ/kg(5000kJ/kg)2.3%5%()3.1.2.2-3-[6][7]1-11988-20002005-2015[8]Tab1-1.GenerationandCompositionofMunicipalSolidWasteinShanghai(%)(%)()19882404.32.591.941.5870.6110.941.022.913.6119903014.264.191.441.1470.0512.040.953.742.1919933358.367.541.891.9761.0911.080.724.741.860.0419953716.511.211.472.1756.6611.990.913.812.29019974348.0511.781.442.2458.0612.030.5641.8220006418.0813.911.432.8154.6612.840.854.151.260.052005709.610.8313.211.933.2162.370.835.452.72010851.212.9812.982.494.4158.760.985.841.9220151050.115.4412.822.865.2855.780.875.361.39t/dt/dt/d1.2.3[9]()2000()(200069)(-4-2000066)(2000.9)CouncilDirective1999/31/EConthelandfillofwaste200620092016199575%50%35%(ActforPromotingClosedSubstanceCycleWasteManagementandEnsuringEnvironmentallyCompatibleWasteDisposal-WasteAvoidanceRecoveryandDisposalAct.Germany.1994.9.27)5%(BasicLawforEstablishingarecycling-basedSociety.Japan.LawNo.110.2000)201019962001(LawRegardingRecyclingofFoodCirculationResources)2005(GreenWasteActionPlan1997)()-5-1.3()[10][11,12],,,,2150,:()(,,)50t/d,[13,14]1996,1998BX-1101999,160kg/d33:1.3.11.,,,1984,,,,,2.,-6-3.1-1Fig.1-1Biochemicalproceduretopruducefeed4.,1.3.21.,,,2.1-2Fig.1-2High-temperaturedisinfectantproceduretoproducefeed:130,1h1.3.3:-7-1-3Fig.1-3Schemeofintermittentaerobicdigestion1.3.4:37d1-4Fig.1-4Schemeofthecontinuousaerobicdigestion1.3.5:1,,,2,34-8-51-5Fig.Schemeoftheanaerobicdigestion-9-22.1CH4CO21972Bryant(1999)(2-1)(1997Ruihongzhang1999)Fig.2-1TheoreticsoftheanaerobicdigestionIIIH2/CO2IIIIIIIIICH4-10-2.22.2.1DeBaere[17]101990122000-120001000000-175.0%1990199530000-119962000150000-120012000000-12.2.21.(1)20%40%DrancoKomopogasValorga[18]DrancoKompogasDrancoKompogasDrancoTSDrancoTSKompogasTS23%Valorga[18](2)-11-(pH)1983Ghosh[19]2TSGhosh[20]ZhangRuihong[21]Scherer(1999)[22]80%654.35514.298%Ghosh[23](refusederivedfuelpellets)20%Pavan(1999)()PoirrierGabrieles(1999)[24]90%DeBaere2.TS20%40%(60%TS)TS15%[25]-12-“”3.30%40%[26]2.2.31.C.Saint.Joly[27]40%N751[28]2530[29]NZhangRuiHong[21]20mgNH3250.3%NH4HCO3[30]Walter[31](NH3-N)2000mg/LNN25%[32]2.(1)ZhangRuihong[21](25)12.5%L.M.Palmowski[33]-13-(2)Ghosh[34](55)35%ZhangRuihongZhangZhiqing[21]609011022.4%22.6%(3)SHasegawa[35]1240%50%[36]3.(TS)[37]TS8%30%CO2TS35%pH5.55.6[38]TS15dTS15.5%TS21.8%10d15.5%(VFA)4.Silvey[39]1838d6090dNallathambi[26]/1000-14-15215mLgVS-1/6735d5.pH3565Ghosh(1999)55357%[40]2.53Cecchi(1991)(Bernal1992)Beeken(1999)200.030.15d-1400.240.47d-15%90%Nimmrichter