SRT影响MBR污泥体系去除污染物动力学研究李绍峰

1　5环境工程学报Vol.1,No.520075ChineseJournalofEnvironmentalEngineeringMay2007SRTMBR李绍峰1,2　刘玉强3　崔崇威3　黄君礼3(1.,150001;2.,518055;3.,150090)　　EckenfelderMBR,,SRT17d,SRT8、27、3742d,SRTMBR,、。　　　　　X506　　　A　　　1673-9108(2007)05-0105-04EffectofSRTonkineticsofpollutedsubstanceremovalbysludgesysteminMBRLiShaofeng1,2　LiuYuqiang3　CuiChongwei3　HuangJunli3(1.EnvironmentalTechnologyCo.,LtdPostDoctorWorkStation,HarbinInstituteofTechnology,Harbin150001;2.DepartmentofArchitectureEngineering,ShenzhenPolytechnicInstitute,Shenzhen518055;3.SchoolofMunicipalEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090)Abstract　TheremovalratesofCODandNH+4-NweregainedatdifferentSRTsbyEckenfelderequation.TheresultsindicatedthattheremovalratesofCODandNH+4-NatSRT=17dwerehigherthanthatatSRT=8d,27d,37dand42dinbothloganddeclininggrowthstages.Accordingly,itsuggestedthatSRThadasig-nificanteffectonthesludgeactivityoftheMBRsystem,andthesludgeactivity,yieldandpermeatefluxofmem-braneshouldbetakenintoaccountwhiledeterminingtheSRTofmembranebioreactorKeywords　SRT;organicsubstrate;NH+4-N;removalrate:(04300420);(03KJD036):2006-07-31;:2007-03-29:(1972～),,,,。E-mail:[e-mail]　　(membranebio-reacter,MBR),、、。,MLSS10000mg/L,F/M,,。,(extracellularpolymericsubstances,EPS),SVI[1],EPS[2];,,[3]。SRT,,,[4～6],MBR。SRT[7～8],;Monod,Eckenfelder2,,。Eck-enfelder,MBRSRT,,、SRT。11　1.1　1。,,MBR;,,,,15min,3min;,。,0.1μm,0.6m2/×4,;,35L。1　Fig.1　Schemeofexperimentalfacility1.2　,、、、、、、,pH,COD400～500mg/L,NH+4-N40～50mg/L。1.3　,2。MLSS2000mg/L,,SRT8、17、27、3742d,,MBR,COD1000mg/L,50mg/L,SBR。7h,0、0.25、0.5、1、2、3、57h50mL,COD。MATLAB,SRTCOD。2　Fig.2　Growthcurvesofactivatedsludge1　SRT,CODTable1　ThefittedregressionequationbetweenCODdegradationrateandSRTSRT(d)MLSS(mg/L)1r22r282053Y=e-0.7989t+6.81750.9922Y=e-0.1127t+4.83310.9950173892Y=e-3.3822t+6.87500.9941Y=e-0.2442t+5.32650.9934276127Y=e-2.2784t+6.86520.9700Y=e-0.2045t+4.76190.9617377859Y=e-1.9293t+6.82690.9697Y=e-0.1395t+5.0330.9316429671Y=e-1.9628t+6.80830.9908Y=e-0.1029t+4.9000.86262　2.1　SRT3MBRSRTCOD,,0～1h,COD,,,2h,100mg/L,1065:SRTMBR。3　SRTCODFig.3　EffectofSRTonCODremovalrateEckenfelder,:dXdt=k1SdSdt=-1YdXdt=-1Yk1S=-K1SdSdt=-K1dtlnS=-K1t+C1(1)。,,Eckenfelder,:dXdt=k1SdSdt=-1YdXdt=-1Yk2XS=-K2XSdSdt=-K2XSlnS=-K2Xt+C2(2):Y———;S———(mg/L),C-BODCOD;t———(d);X———(mg/L);,X,2K2X,。SRT()K1、K2C1、C2,MBRSRT()K1、K2C1、C2,。MATLAB1。1SRT8、17、27、3742dCOD,CODSRT8d-0.7989,SRT17d(MLSS=3892mg/L),COD-3.3822,SRT,CODSRT27d-2.2784,37d-1.937742d-1.9628。2COD,K2X,SRT,X,K2XSRT17d。MBR,SRT,COD,SRT。MBR,,SRT。SRT,,FM/,,,,MBRCOD,,,,,MLSS[9]。MBRSRT,(MLVSS)XvSRTMBR,Xv42d,17d,,2。,。2.2　SRTSRT4,MATLABSRTMBR,2。,0.9。,DO2mg/L,SRT17d,,6.034mg/h,SRT,,SRT42d,MLSS9671mg/L,2.8906mg/h,COD。,MBR,,1071INTF,,,[10]。,,,。,,。　　　4　SRTFig.4　EffectofSRTonNH+4-Nremovalrate2　SRT,Table2　ThefittedregressionequationbetweenNH+4-NremovalrateandSRTSRT(d)MLSS(mg/L)1～7hr282053Y=49.9846-4.0052t0.9323173892Y=55.2394-6.0340t09286276127Y=48.2870-5.8665t0.9330377859Y=45.4733-5.0590t0.9747429671Y=47.9999-2.8906t0.96903　　(1)Monod,MBREckenfelder。,SRT17d,COD,-3.3822,SRT8、27、3742d:-0.7989、-2.2784、-1.9293-1.9628;,:-0.1127、-0.2442、-0.2045、-0.1395-0.1029,SRT17d,;(2)MBR,SRT8、17、27、37、42d-4.0052、-6.0340、-5.8665、-5.0590-2.8906mg/h,SRT17d,;(3)MBR,MBR,17d,,MBR、。[1],,.EPS.,2004,24(4):613～618[2]In-SoungChang,Chung-HakLee.Membranefiltrationcharacteristicsinmembrane-coupledactivatedsludgesys-tem:Theeffectofphysiologicalstatesofactivatedsludgeonmembranefouling.Desalination,1998,(120):221～233[3],,..,200430(2):19～20,29[4]UedaT.,HataK.,KikuokaY.Treatmentofdomesticsew-agefromruralsettlementsbyamembranebioreactor.Wa.tSc.iTech.,1996,34(9):189～196[5]ShinandKang.Characteristicsandfatesofsolublemicrobi-alproductsinceramicmembranebioreactoratvarioussludgeretentiontimes.WaterResearch,2003,37(1):121～127[6],.SRT.,2000,16(7):16～18[7]Han,eta.lInfluenceofsludgeretentiontimeonmembranefoulingandbioactivitiesinmembranebioreactorsystem.ProcessBiochemistry,2005,40(7):2393～2400[8]Ng,eta.lMembranebioreactoroperationatshortsolidsre-tentiontimes:Performanceandbiomasscharacteristics,WaterResearch,2005,39(6):981～992[9],,..,2003,35(3):307～310[10],,,.,2004,25(6):89～91108