40 10200810 JOURNALOFHARBININSTITUTEOFTECHNOLOGY Vol.40No.10Oct.2008 EGSB1,2, 1,1,1(1.,150090;2.,030009,E-mail:chunjuand@126.com) :为研究对低温EGSB反应器的运行机理,考察温度和液体上升流速(Vup)对EGSB反应器处理低浓度啤酒废水时运行效果和污泥产甲烷活性的影响,分析不同温度和Vup时EGSB反应器内速率常数K和活化能E的变化.结果表明:温度降低,污泥产甲烷活性明显降低,COD去除率也相应降低.EGSB反应器在35℃、15℃(与35℃时同样的Vup)和15℃(提高Vup至最佳)时K分别为0.391×103d-1、0.107×103d-1和0.254×103d-1.低温EGSB反应器提高Vup前后E分别为4.897×104J/mol和1.197×104J/mol.温度降低使得EGSB反应器内污泥活性和COD去除率降低,K明显降低,但Vup的提高却能显著提高K,减小E,使EGSB反应器在15℃低温下仍能保持高处理率.:EGSB反应器;液体上升流速;动力学;速率常数K;活化能E:X703:A:0367-6234(2008)10-1558-05MechanishresearchonperformanceofEGSBreactoratlowtemperatureDONGChun-juan1,2,LIUXiao1,ZHAOQing-liang1,LUBing-nan1(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;(2.Dept.ofEnvironmentEngineering,TaiyuanUniversity,Taiyuan030009,China,E-mail:chunjuand@126.com)Abstract:ToresearchtheperformancemechanismoftheEGSBreactoratlowtemperature,theinfluenceoftemperatureandliquidup-flowvelocity(Vup)ontheperformanceoftheEGSBreactorandonthemethano-genicactivityofthegranularsludgewerestudied.AndthenchangesoftherateconstantKandtheactivationenergyEintheEGSBreactoratdifferenttemperaturesandvariedVupwereanalyzed.TheresultstatedthatloweringtheoperationtemperatureledtoanobviousdecreaseinthegranularsludgemethanogenicactivityandtheCODremovalefficiency.TherateconstantKoftheEGSBreactorat35℃,15℃(withanequalVupto35℃)and15℃(withanoptimalVup)was0.391×103d-1,0.107×103d-1and0.254×103d-1,re-spectively.TheactivationenergyEoftheEGSBreactorwas4.897×104J/moland1.197×104J/molbeforeandafterincreasingVup.LoweringtheoperationtemperatureoftheEGSBreactorcausedtheobviousdecreaseofthegranularsludgemethanogenicactivity,theCODremovalefficiencyandtherateconstantK.Butheight-eningVupcouldimprovetherateconstantKanddecreasetheactivationenergyEapparently.AndthustheEGSBreactorcouldremainhighremovalefficiencyatlowtemperatureof15℃.Keywords:EGSBreactor;liquidup-flowvelocity;dynamics;rateconstantK;activationenergyE:2005-10-25.:(2007031101-1);(07021003).:(1970—),,,;(1962—),,,;(1940—),,,. ()、().18℃,,,,,.,[1].EGSB,,,,.Rebac[2]EGSBVFA,VFA500~800mg/L、10~12kg/(m3·d)、10~12℃、HRT1.6~2.5h,COD90%.Lettinga[3]EGSBVFA,VFA500~900mg/L、5~12kg/(m3·d)、4~8℃、HRT2~4h,COD90%.Rebac[4]EGSB,200~1800mg/L、3~12kg/(m3·d)、10~15℃、HRT3.5h,COD67%~78%.EGSB,[5-9].EGSB,EGSB、,、EGSB,EGSB,EGSB.1 实 验1.1 EGSB16.5L,10.0L,90mm,19∶1.1.,..,,CO2,Mariotte、;CO2,Mariotte.1.2 EGSB、,m(COD)∶m(N)∶m(P)=100∶3∶1;m(S)∶m(P)=1∶2;m(S)∶m(Fe)2+=3∶1;m(Fe)2+:m(Co2+)∶m(Ni2+)=10∶1∶2NH4Cl、KH2PO4、Na2S·9H2O、FeCl2·4H2O、CoCl2·6H2O、NiCl2·6H2O.1.;2.;3.;4.;5.;6.;7.;8.;9.;10.;11.;12.EGSB;13.;14.;15.;16.;17.;18.;19.;20.CO2;21.Mariotte;22.1 EGSB1.3 COD;VFA;Marriotte,[10].2 结果与讨论2.1 35℃、450mg/L、HRT1.7h、2.8m/hEGSB15℃(5℃),,.:EGSB;,EGSBCODVFA,2,3.2 2(),.2,·1559·10,:EGSB,,20℃15℃,.3,35℃15℃,COD86.5%82.68%,VFA0.7mmol/L0.93mmol/L.,.15℃EGSB82.68%COD,0.93mmol/LVFA.3 CODVFA EGSB、CODVFA,,EGSB,EGSB40g/L.,,,,,,EGSB,,,EGSB.2.2 EGSB,,.450mg/L,(35℃15℃)、HRT(3.4h、1.7h0.9h)COD,,4.4,COD,HRT3.4h,3.0m/h,35℃15℃,COD91.97%87.92%.3.6m/h,COD91.52%.,EGSB,,EGSB15℃.4 COD 、HRT,EGSB.HRT.HRT3.4h,35℃15℃3.0m/h3.6m/h;15℃,HRT3.4h、1.7h0.9h3.6m/h、3.9m/h4.6m/h.3 动力学分析3.1 EGSBEGSB、[11],-dSdt=kvmaxXSλfKSX+S.(1):k;f;λ;KS.,SλfKSX,(1)-dSdt=kvmaxλfKSS=KS.(2)K,K=kvmaxλfKS.,vmax(vmaxkvmax),KS(λ,λKS).EGSB,,,(f,fKS).,EGSB,.,EGSB,EGSB·1560· 40 v′max(v′max=kvmax)K′S(K′S=λfKS),,K=kvmaxλfKS.3.2 EGSBKEGSB3:35℃;15℃;15℃.、K.3.2.1 EGSB,:1);2)EGSB;3);4)EGSB、,,,EGSB10,.,EGSBCOD,3CODCOD.EGSBS0Q+VfdSdt=SeQ.(3):Q;Vf;S0,Se.(2)(3),S0-Set=KSe.(4)t,t=Vf/Q,d.3.2.2 KEGSB3,(HRT)3.4h、2.3h、1.7h、0.9hCOD,1.1(2),K,5.1 EGSBt/℃Vup/(m·h-1)HRT/dCOD/(mg·L-1)S0-Set352.82.82.83.00.1400.0960.0710.0370.0790.0540.0420.021491.90408.85420.99473.6239.5043.9550.6474.265726.586757.418817.8619017.14153.63.63.94.60.1400.0960.0710.0370.0790.0540.0420.021478.14438.25476.09481.7148.5556.6771.71111.275437.857496.3010244.5217640.002.82.82.83.00.1400.0960.0710.0370.0790.0540.0420.021478.14438.25476.09481.7155.4362.1580.67149.785350.766964.819414.7615806.795 K 5K:35℃,K=0.391×103d-1;15℃(35℃),K=0.107×103d-1;15℃(),K=0.254×103d-1.,,EGSB,,COD.HRT0.9h,3.0m/h,EGSB35℃15℃,K0.391×1030.107×103,COD84.32%·1561·10,:EGSB68.9%.3.9~4.2m/h,K0.107×1030.254×103,COD68.9%76.70%.,EGSB(、),EGSB.3.3 EGSB,Arrhenius[11]lnk=-ERT+lnk0.(5):k,(4)K;R,kJ/(mol·K);E,kJ/mol;k0,k;T,K.,EGSBE4.897×104J/mol1.197×104J/mol.EGSBE.4 结 论1)35℃、400mg/L、HRT1.7h、2.8m/hEGSB,35℃15℃,,COD86.5%82.68%,VFA0.7mmol/L0.93mmol/L.2)EGSB,EGSB15℃.HRT3.4h,3.0m/h,35℃15℃,COD91.97%87.92%.3.6m/h,COD91.52%.、HRT,.HRT3.4h,35℃15℃3.0m/h3.6m/h;15℃,HRT3.4h、1.7h0.9h3.6m/h、3.9m/h4.6m/h.3)EGSBK,K.450mg/L,EGSB35℃、15℃(35℃)15℃()3K0.391×103d-1、0.107×103d-10.254×103d-1.4)EGSB,E.ArrheniusEGSBE4.897×104J/mol1.197×104J/mol.参考文献:[1] LETTINGAG,REBACS,ZEEMANG.Challengeofpsychrophilicanaerobicwastewatertreatment[J].TRENDSinBiotechnology,2001,19(9):363-370.[2] REBACS.High-rateanaerobictreatmentofwastewaterunderpsychrophilicconditions[J].BiotechnologyandBioengineering,1995,80:15-22.[3] LETTINGAG.High-rateaanaerobictrea