分置式膜生物反应器凝胶层膜污染模型研究杨琦

-1,2,1＊,2,2(1.,　100083;2.,　100084):,,3～10m/s,5h,.-,,,.:-;;;:X703.3　:A　:0250-3301(2006)11-2344-06:2005-12-21;:2006-03-21:(59878025,40102027,50578151);(8052017);:(1966～),,,,,E-mail:[e-mail]＊,E-mail:[e-mail]ecirculatedMembraneBioreactorYANGQi1,HUANGXia2,SHANGHai-tao1,WENXiang-hua2,QIANYi2(1.SchoolofWaterResourcesandEnvironment,ChinaUniversityofGeosciences,Beijing100083,China;2.StateKeyJointLaboratoryofEnvironmentalSimulationandPollutionControl,DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China)Abstract:Theresistanceanalysesforrecirculatedmembranebioreactorbytheresistance-in-seriesmodelandthemodifiedgel-polarizationmodelrespectivelywereextendedtotheturbulentultrafiltrationsystem.Theexperimentsarecarriedoutbydyewastewaterinatubularmembranemodule,itisfoundthatthepermeatefluxesarepredictedverywellbythesemodelsforturbinatesystems.Andtheresistancecausedbytheconcentrationpolarizationisstudied;thegellayerresistanceisthemostimportantofalltheresistances.Keywords:recirculatedmembranebioreactor;gel-polarization;polarizationconcentration;fouling　　-,,、、、,[1～3].,.-,,,,[4,5].-,-.-,,-,,.,..1　1.1　、、、、[6,7].(,),.,,,,..,,.,,,.1.2　、,,.2711200611　　　　　　ENVIRONMENTALSCIENCEVol.27,No.11Nov.,2006DOI:10.13227/j.hjkx.2006.11.038,cg(gelconcentration).、,.12[7].1　Fig.1　Schematicdiagramofconcentrationpolarizationandgellayer,,.,..,,cg.,,.,,.2,.,:JV=Δpμ(Rm+Rg)=klncgcb[7](1)　　Rg,Rm.,:JVlim=klncgcb(2)　　cg,cb(),k.,Dittus-Boelter[6,7]:k=0.023μ0.8D0.67(2rm)0.2μρ0.47(3)　　μρ,D.,,(3).1.3　.,.、:JV=Δpμ(Rm+Rg+Rp)(4)　　Rm,RgRp.Δp.Rp.2,,Rp.Rp=ΥΔp[6](5)　　Υ,(4):JV=Δpμ(Rm+Rg+ΥΔp)[6,7](6)　　:R=Rm+Rg(7)JVlim=1Υ(8)　　:1μ·JV=Υ+Rm+RgΔp(9)　　:1μ·JV=1JVlim+RΔp(10)　　1μJV1Δp,R,1JVlim.R,Δp,JV(Rm+Rg),Δp,JV1Υ.2　2.1　2.234511　　　　　　3,8,9,12(11)HRT;7SRT.30℃.4(ORP),ORP300～400mV.;.1.　2.　3.　4.5.　6.　7.　8.　9.　10.　11.　12.2　-Fig.2　Schematicdiagramofrecirculatedceramicmembranebioreactor2.2　,.,.,,.0.02μm,.2.3　.7,,.4.5mm,40cm,(7)0.03m2.,0.02μm.1.2.4　,2.3　3.1　0.02μm(1)(30℃)　3.1　Table1　Basicparametersofthemembrane(20℃)/m3·(m2·h·MPa)-13.5Al2O3ZrO2/nm0.02/m0.47/mm4.5/m26.7×10-5/m20.032　Table2　InfluentcomponentsofRMBR100L/g2522.5KH2PO44.75NH4Cl19Na2CO310MgSO4·7H2O5.93FeSO4·7H2O0.03CaCl2·2H2O0.573　Table3　RelationshipofvisciditiesandactivatedsludgedensitiesMLSS/g·L-10.844.657.19μ×10-3/Pa·s1.091.381.611.792.27　　(2)0.02μm(3.9m·s-1)　30.02μm.3　0.02μmFig.3　Relationshipofexperimentalfluxesofpurewaterandtrans-membranepressures2346　　　　　　27　　3,Rm=R=0.0129×3.6×1071.09=4.2×105(Pa·s)·m-1,4.2×105(Pa·s)·m-1.(3)0.02μm(3.9m·s-1)　40.02μm.4　0.02μmFig.4　Relationshipofexperimentalfluxesofartificialwasterwaterandtrans-membranepressuresR=0.0526×3.6×1071.38=1.37×106(Pa·s)·m-1,9.5×105(Pa·s)·m-1.(4)　5.5　Fig.5　VaryingsofMBRfluxeswithtime5,,5h,.5h,1～5h,,,,,,.3.2　-(1)-4.65g·L-11h(3.9m·s-1)　0.02μm4.65g·L-11h6.0.02μm,3.9m·s-1,1h,4.65g·L-16　Fig.6　Linearregressioncurveof1/(J·μ)and1/ΔptogettheresistanceofMBRmodel6,0.02μm4.65g·L-11h(3.9m·s-1).6,R=4.03×109(Pa·s)·m-1,R=4.03×109(Pa·s)·m-1.k,C5H7NO2,.:D=13.26×105μ1.4V0.589D(cm2·s-1),μ(mPa·s),V.3.636×10-6cm2·s-1,Re2000～4000,.(3)k=5.04×105m·s-1,6JVlim=6.15×10-6m3·(m2·s)-1.(2)4.65g·L-15h(3.9m·s-1)　0.02μm4.65g·L-15h(3.9m·s-1)7.7,0.02μm4.65g·L-15h.7,R=4.88×109(Pa·s)·m-1,4.88×109(Pa·s)·m-1.(3)k=5.04234711　　　　　　0.02μm,3.9m·s-1,5h,4.65g·L-17　Fig.7　Linearregressioncurveof1/(J·μ)and1/ΔptogettheresistanceofMBRmodel×105m·s-1,7JVlim=1.036×10-6m3·(m2·s)-1.(3)4.65g·L-11h(5.3m·s-1)　85.3m·s-1、4.65g·L-1.0.02μm,5.3m·s-1,1h,4.65g·L-18　Fig.8　Linearregressioncurveof1/(J·μ)and1/ΔptogettheresistanceofMBRmodel80.02μm4.65g·L-1,1h.8,R=3.31×109(Pa·s)·m-1,3.31×109(Pa·s)·m-1.(3)k=5.04×105m·s-1,8JVlim=1.348×10-6m3·(m2·s)-1.(4)0.02μm4.65g·L-15h(5.3m·s-1)　9.9,0.02μm4.65g·L-15h.9,R=3.49×109(Pa·s)·m-1,3.49×109(Pa·s)·m-1.(3)k=5.04×105m·s-1,8JVlim=7.151×10-5m3·(m2·s)-1.0.02μm,5.3m·s-1,5h,4.65g·L-19　Fig.9　Linearregressioncurveof1/(J·μ)and1/ΔptogettheresistanceofMBRmodel3.3　,,,、、,Cheng[6].-[8,9]:1f=2×lg(Re×f)-0.8δ=32.8×dRe×f　　,δ,m;d,m;f.4.5mm,Re4×103～2×105,2δ0.45～14.4μm.4　(1),.(2).(3)0.45～14.4μm.:[1]TrouveE,UrbainV,ManemJ.Treatmentofmunicipalwastewaterbymembranebioreactor:resultsofasemi-industrialpilot-scalestudy[J].Wat.Sci.Technol.,1994,30(4):151～157.2348　　　　　　27[2]BaileyAD,HansfordGS,DoldPL.Theuseofcrossflowmicrofiltrationtoenhancetheperformanceofanactivatedsludgereactor[J].Wat.Res.,1994,28(2):297～301.[3]MullerEB,StouthamerAH,VanVerseveldHW,etal.Aerobicdomesticwastewatertreatmentinapilotplantwithcompletesludgeretentionbycrossflowfiltration[J].Wat.Res.,1995,29(4):1179～1189.[4]NaganoA,ArikawaE,KobayashiH.Thetreatmentofliquorwastewaterscontaininghigh-strengthsuspendedsolidsbymembranebioreactorsystem[J].Wat.Sci.Technol.,1992,26(3-4):887～895.[5]UrbainV,MobarryB,VdeSilva,etal.Integrationof　　　　　performance,molecularbiologyandmodelingtodescribetheactivatedsludgeprocess[J].Wat.Sci.Technol.,1998,37(4-5):223～229.[6]ChengTW,YehHM,GauCT.Resistanceanalysesforultrafiltrationintubularmembranemodule[J].SeparationScienceandTechnology,1997,32(16):2623～2640.[7]()