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200610()Oct.20062910JournalofChongqingUniversity(NturlScienceEdition)Vol.29No.10:1000-582X(2006)10-0118-0333,,,,(,300191):3(),(HRT)CODTNNH3-NNO3-NTPPO4-P,HRT:COD14.47%45.09%;TN25.50%71.00%NH3-N39.96%82.47%NO3-N27.21%74.41%TP38.91%90.01%PO4-P38.55%92.01%;TDS4500mg/L;pH.HRT,,,,,3.:;;;;:X522:A,(TEDA),.(),COD,,,,.TEDA(2500033000mg/L),50007000mg/L,,,,3,,3,[1].,.13.2,,.(),,,4(HRT,),HRT3d,7d,14d,28d,8d.2,30cm26cm40cm,20cm,14cm,5;30cm20cm26cm,9L.56d,25,(3013l21100lux),,,,,,,,3:2006-05-15:863(2003AA601030);(05ZGCGX01600):(1975-),,,,.©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[2].33.1COD(1)1COD%OABCOABCOABC14.4720.3827.8540.2515.1024.6135.0044.8925.8936.8440.1845.0914HRTOABC,OABCOABC,COD14.47%45.09%.HRT,COD,HRT,COD.COD.,,COD,COD.,COD;COD10.00%44.89%,COD80%[3],,BOD5/COD0.1.COD.3.2(2)2,HRT,3TNNH3-NNO3-N,HRT,TNNH3-NNO3-N,;,,,,TNNH3-NNO3-N;,,,,TNNH3-NNO3-N.TN60%[4].2OABCOABCOABCTN35.4939.7854.9968.1625.5036.0050.8071.0032.2539.3548.5463.05NH3-N45.5553.9467.0376.7139.9647.8659.9674.0649.4458.8069.8282.47NO3-N33.5639.7855.2274.4127.2138.0052.9974.0029.8138.1546.7962.433.334HRTOABCOABC,TPPO4-P,HRT,,TPPO4-P,,HRT,TPPO4-P..,,..,,PO4-P/TP79.21%,(PO4-P),,.,,HRT,,,[5].3.4TDS4,4TDS..56d,TDS.TDS(TDS412417),,,TDS4700mgL.,,[6].9112910,:3©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[7].43,.,.6.5pHmg/LOABCOABCOABC8.238.248.208.228.258.278.268.288.248.348.238.277.187.297.257.347.307.517.457.387247.237.367.316%CODTNNH3-NNO3-TPPO4-PTDS/mg/LpH38.2551.1264.221.2674.0175.11-540-1.06,HRT15d,B,:COD38.25%;TN:51.12%;NH3-N:64.22%;NO3-51.26%;TP74.01%;PO4-P75.11%;TDS:540mg/L,pH,B3,,3.51)3.2)HRT,HRT.3)3TDS4.7,.4)pH.5),3,,.:[1],,.[J].,2004,(2)58-61[2].()[M].:,2002.278-285.[3],.[J].,1997,8(1)88-92[4].[J].,1994,10(1)40-43[5],,.[J].,1991,12(4)47-51.[6]JERRYCOLEMAN,KEITHHENCH,KEITHGARBUTT,etal.TreatmentofDomesticWastewaterbyThreePlantSpe2cificinConstructedWetlands.Water,air,andSoilPollu2tion,2001,128:283-295.[7]NIKOSILVAN,HARRIVASANDER&JUKKALAINE.VegetationistheMainFactorinNutrientRetentioninaCon2structedWetlandBuffer[J].PlantandSoil,2004,258:179-187.(124)021()2006©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1],.[M].:,2000.[2],.Arnoldi[J].,2003,24(2):101-110.[3]SAADY,SCHULTZMH,GMRES.AGeneralizedMinimalRe2sidualAlgorithmforSolvingNonsymmetricLinearSystems[J].SIAMJScientificComputing,1986,(7):856-869.[4]SAADY,KRYLOV.SubspacemethodsforSolvingUnsym2metricLinearSystems[J].MathComput,1981,37:105-126.[5]JBAGLAMA,DCALVETTI,GHGOLUBL,etal.Adap2tivelypreconditionedGMRESalgorithm[J].SIAMJScien2tificComputing,1998,20:243-269.[6]YUNGHUANG,HENKvanderVorst.SomeObservationsontheConvergenceBehaviorofGMRES[R].TechnicalRe2port89-09,Facultyoftechnicalmathematicsandinformat2ics,Delft,1989.AcceleratedGeneralizedMinimalResidualAlgorithmLIURen2da,YANGDa2di(CollegeofMathematicsandPhysics,ChongqingUniversity,Chongqing400030,China)Abstract:Thispaperstudiesthefundamentaltheoryofthegeneralizedminimalresidualalgorithm(GMRES(m))inKry2lovsubspaceandspeciallytherelationshipbetweenresidualvectorandKrylovsubspace.Therelationshipofthealgo2rithmconvergenceandthesubspacebeselectedisfurtherresearchedaccordingthelinearsystemaboutresidualvector.Itisposedthattheconvergencecanbesloweddownbecausetherearesomanyverysmalleigenvalueinmagnitude.Andaacceleratedmethod(AGMRES(m))isproposedtoimprovetheconvergenceoftheGMRES(m).Theoreticalanalysisandnumericalresultsshowthereliabilityandefficiencyofthealgorithm.Keywords:GMRES(m)algorithm;accelerated;Krylovsubspace;generalizedminimalresidualalgorithm()(120)EffectsofPurificationHighlySaltyReuseWaterQualitybyThreePlantsinTEDALandscapeRiverFUChun2ping,TANGYun2ping,CHENXi2jian,XUYa2peng,XINGGuo2zheng(TanjinAcademyofEnvironmentalSciences,Tianjin300191,China)Abstract:Theeffectsofpurificationhighlysaltyreusewaterqualityarestudiedbythreeplants2scirpustabernaemontaniiGmel,TyphaandCannaindicaLinninTianjin2EconomicandTechnologyDevelopmentAreaLandscapeRiver.There2sultsshowthathydraulicretentiontimehasobviouslyinfluenceontheeffectsofpurificationhighlysaltyreusewaterqual2ity.Moreover,removalratesofallkindsofcontaminationvarywithHRT,suchasremovalrateofCOD,TN,NH3-N,NO3-N,TP,PO4-Pis14.47%45.09%,25.50%71.00%,39.96%82.47%,27.21%74.41%,38.91%90.01%,38.55%92.01%respectively.Boththethreeplantsgrowandeffectsofpurificationofthehigh2lysaltyreusewatertreatmentsystemsoperateverywellwhileconcentrationofTDSisabout4500mg/Linthewater;pHofeffluentwaterplantsislowerthaninfluent.RemovalratesofPhosphorusbyScirpustabernaemontaniiGmelandTyphaarehigherthanitsbyCannaindicaLinnwhentheHRTissameness.ThereasonthatScirpustabernaemontaniiGmelandTyphaare