MBRRO组合工艺深度处理高碳高氮废水的研究周飞飞

MBR-RO,＊,,(,,　116024):AO-MBRRO,CODN,.,AO-MBR95.6%,TOC0.9mg·L-1、TN12.65mg·L-1、0.038mol·L-1、14.6mg·L-1,.CODN,.CODN10.2,,89.4%;CODN7.1、5.6,,72%、74%.,,AO-MBR.:AO-MBRRO;;;:X703.1　:A　:0250-3301(2009)06-1674-07:2008-07-11;:2008-09-09:(50578024):(1984～),,,,E-mail:[e-mail]＊,E-mail:[e-mail]-ROProcessTreatingHighStrengthWastewaterZHOUFei-fei,ZHANGHan-min,FUZhi-min,YANGFeng-lin(KeyLaboratoryofIndustrialEcologyandEnvironmentalEngineering,MinistryofEducation,SchoolofEnvironmentalandBiologicalScienceandTechnology,DalianUniversityofTechnology,Dalian116024,China)Abstract:TheperformancesofAO-MBRROsystemfortheremovalofnitrogenandCODwereinvestigated.ResultindicatedthatmostorganicwasremovedintheAO-MBRandtheaverageremovalefficiencywas95.6%.ThewaterqualityofROeffluentwhichintermsofTOC0.9mg·L-1,TN12.65mg·L-1,totalrigidity0.038mol·L-1,totalalkalinity14.6mg·L-1couldmeetthewaterqualityrequirementsforthetownwastewaterreuse.TheaverageremovalefficiencyoforganicwasalmostunaffectedbyCODN,buttheprocessofTNremovalwasaffectedbyCODN.TNremovalwasprimarilybasedonsimultaneousnitrificationanddenitrification(SND)processoccurredintheaerobiczoneandtheaverageremovalefficiencyofTNwas89.4%withaverageCODNof10.2.BothaerobicSNDandconventionalbiologicalnitrificationdenitrificationcontributedtonitrogenremoval,theaverageremovalefficiencyofTNwas72%,74%withaverageCODNof7.1and5.6.ThefoulingcakelayerformedontheROmembranesurfacewasobservedbyscanningelectricmicroscopy.ThemembranefoulingwascharacterizedbyFouriertransforminfraredspectroscopytechniquewhichshowedthatthemajorcomponentsofthefoulantsweresolublemicrobeproducts.Keywords:AO-MBRRO;influentCODNratio;membranefouling;wastewatertreatment　　(membranebioreactor,MBR),、、、[1].(reverseosmosis,RO)[2～6],MBR-RO[7].、.,,.CODN(chemicaloxygendemandtonitrogenratio),CODN[8].Carrera[9]CODN7.1±0.8.AO-MBRRO,.1　1.1　MBR-RO1.,18L,2,1∶2,.;30620096　　　　　　ENVIRONMENTALSCIENCEVol.30,No.6Jun.,2009DOI:10.13227/j.hjkx.2009.06.037,,.,0.1μm,0.2m2,MBR.,,0.322m2;0.45MPa,15%.1.MBR;2.;3.;4.;5.;6.;7.;8.;9.;10.;11.;12.1　MBR-ROFig.1　SchematicdiagramofMBRROexperimentalprocess　1.2　,MLVSSMLSS0.60.,、NH4Cl、KH2PO4、、,FeSO4·7H2O、CuSO4·5H2O、MnCl2·4H2O、Na2MoO4·2H2O、ZnSO4·7H2OCoCl2·6H2O,NaHCO3Na2CO3pH7.5～8.5,.MBR:COD2000mg·L-1,NH+4-N3200、300、400mg·L-1,411、990.2、2077mg·L-1(CaCO3),1mL,pH8.1～9.2,31.1.3　COD、NH+4-N、NO-3-N、NO-2-N、、、MLSS、MLVSS[10];NH+4-N;AO-MBRNH+4-N、NO-3-NNO-2-N;(YSI5512FT,USA);pH(SartoriusPB-10,Germany);、TNTOC(TOC-VCPH,ShimadzuCorporation,Japan);(DDS-11D,);(solublemicrobialproducts,SMP)Lowery[11],-[12];(JEOLJSM-5600LV,Tokyo,Japan);(EQUINOX55,Bruker,Germany).1　Table1　OperationparametersofMBRandROⅠⅡⅢHRTh363636SRTMBRm3·h-10.35～0.380.4～0.430.45～0.47MLSSmg·L-116309.41607513270MLVSSMLSS0.850.780.79℃252525L·(h·m2)-12.52.52.5MPa0.450.450.45RO%151515℃252514～15L·h-15.57.34.82　2.1　(AO-MBR)2.1.1　AO-MBRCOD2　AO-MBRCODFig.2　CourseofCODremovalinAO-MBR6,COD2.,32037.8～2391.6mg·L-1,3COD,95.6%,3CODN.0.5mg·L-1,2mg·L-1.91.2%,,COD95.6%,COD16756:MBR-RO.2.1.2　AO-MBR3.200mg·L-1,300、400mg·L-1,,0.35～0.38m3·h-1、0.4～0.43m3·h-1、0.45～0.47m3·h-1.3,Ⅰ(CODN10.2),89.5%、89.4%.,.Ⅱ,,CODN7.1,,77%,72%,,,.Ⅲ,,CODN5.6,,95.%,,.Ⅲ,74%.3　AO-MBRFig.3　CourseofnitrogenremovalinAO-MBR　.,,,,,.,,,NO-x-N(ΔNO-x-N),TN(ΔTN).,2,(1)(2)3.R1=ΔTNΔNO-x-N+ΔTN×100%(1)R2=ΔNO-x-NΔNO-x-N+ΔTN×100%(2)2　AO-MBRTable2　NitrogenconcentrationsinAO-MBRⅠⅡⅢNH+4-Nmg·L-158.031.6115.167.4156.616.6NO-3-Nmg·L-10.30.51.119.25.882.1NO-2-Nmg·L-10.10.140.39.64.818.7NO-x-Nmg·L-10.40.641.428.820.4100.8TNmg·L-158.432.2116.596.2177117.4ΔNO-x-Nmg·L-1—0.24—27.4—80.4ΔTNmg·L-126.2—20.3—59.6—R1%—99—42.5—42.6R2%1—57.5—57.4—　　2,Ⅰ26.2mg·L-1,(0.6mg·L-1),99%,1%.Ⅱ20.3mg·L-1,NO-x-N27.4mg·L-1,42.5%,57.5%,,.Ⅲ59.6mg·L-1,42.6%,NO-x-N80.4mg·L-1,NO-x-N,,.Ⅱ.,CODCODN,.,AO-MBR,CODN5.67.1,,,1676　　　　　　3072%74%;CODN10.2,89.4%.,AO-MBR,、.AO-MBR95.6%COD89.4%.COD、1333.3、266.6mg·(L·d)-1,《》(GB18918-2002)[13].2.2　MBRRO,MBR3,1.33.TOC24.4～115mg·L-16.2～11.3mg·L-1,TN12.65mg·L-1,TOC0.9mg·L-1.4,,395.8%、96.0%、92.9%.,Ⅲ,,92.9%.,TN、TOC,、,《》(GB18918-2002)A[13].3　RO1)Table3　AnalyticalresultsofROeffluentⅠⅡⅢ%%%CODmg·L-1　7.139110　89.97.7　92.6TOCmg·L-10.692.50.9920.4293.2TNmg·L-12.2913.359512.6589mol·L-10.03890.10.01996.80.02699.2(CaCO3)mg·L-110.9591.614.68613.6893.31)　　,AO-MBRRO.AO-MBR,RO,,.3　,、4　ROFig.4　CourseofconductivityremovalinRO　、,.Li[14],、、、.,,..5,2,,..315dⅠ0.033L·d-1、Ⅱ0.053L·d-1、Ⅲ0.04L·d-1.ⅡⅢ,Ⅱ,,;Ⅲ,.,.15%,0.5%,93.1%.Ⅲ,0.5g·L-16L.、、.,10.1mg·L-1,3.95mg·L-1,.6,、.,,19%,35.2%.,16776:MBR-RO5　Fig.5　SimulatecurveofROpermeateflux　,,,.,AO-MBRRO,.、,(SMP),、、,MBRCOD,..7,,.,,.7(c),,　　　6　、Fig.6　ProteinandpolysaccharideconcentrationintheROinfluentandeffluent　,,.8.8(a),;8(b),,,,;8(c),、,,,;8(d),.,.7　Fig.7　PhotographsofROmembrane　　　,,FTIR9.,3290cm-1(—OH)、2924cm-12862cm-1(C—H),.FTIR1658cm-1(Ⅰ)1525cm-1(Ⅱ),;1053cm-1[15].,MBRSMP.4　(1)AO-MBRRO,,,1678　　　　　　308　Fig.8　SEMimagesofROmembrane　9　Fig.9　FTIRspectraofmembranefoulants　,TOC、TN、93.2%、89%、92.9%.(2)AO-MBRCODN,COD,95.6%,CODN,,CODN7.15.6,,72%、74%,;CODN10.2,,89.4%.(3),FTIR,,AO-MBRSMP,.:[1]　,.[M].:,200