复合垂直流湿地反应动力学及水流流态的研究付贵萍

2001,21(6)535~539ChinaEnvironmentalScience1,1,1,1,1,AlexPressl2,ReinhardPerfler2(1.,4300722.,)(IVCW),.,COD,(RTD),RTD,,IVCW,.(RTD)X144A10006923(2001)06053505Studiesonthereactionkineticsandwaterflowpatternoftheintegratedvertical-flowconstructedwetland.FUGui-ping1,WUZhen-bin1,RENMing-xun1,HEFeng1,CHENGShui-ping1,AlexPressl2,ReinhardPerfler2(1.StateKeyLaboratoryofFreshwaterEcologyandBiotechnology,InstituteofHydrobiology,ChineseAcademyofSciences,Wuhan,430072,China2.UniversityofAgriculturalSciencesVienna,Austria).ChinaEnvironmentalScience.2001,21(6)535~539AbstractAnewtypeofintegratedvertical-flowconstructedwetland(IVCW).systemwaspresentedanditsreactionkineticsandtheactualflowpatternofthesystemwerestudied.Basedontheoperationexperimentofmedium-scale,thereactionrateequationofCODremovalforthesystemwasobtainedandtheretentiontimedistribution(RTD)ofwaterflowinthesystemwasassuredthrough.RTDdifferencewaspresentedasthemaincauseofthediversityofthewetlandtreatmentefficiency;andtheactualwaterflowpatternofIVCWwasfurthersimulatedusingnotidealofthedispersedflowmodelandreactorinseriesmodel.Itwasfoundthattheformermodelwasmoreeffectivethanthelatterforsimulation.Keywordsintegratedvertical-flowconstructedwetland(IVCW)reactionkineticsretentiontimedistribution(RTD)reactorinseriesmodeldispersedflowmodel,,,,,,[1],.(IVCW),,,,NP[2],.IVCW,,,,,IVCW.11.1(IVCW)IVCW29×9m21.2m,1..,20cm40~80mm,0~4mm,60~65cm,50~55cm.20010326(39925007);(ERBIC18CT960059);(2000FB11)53621,,,0.5%.12(Zizaniacaduciflora)(Acoruscalamus),38~41/m2.1,2.1(IVCW)Fig.1Crosssectiondiagramofintegratedvertical-flowconstructedwetland1.2IVCW.NPTSSBOD5CODCr,CODCr..0.4~1.2m3/(m2·d).26.1.3(KCl),IVCW.,5min,,.ProfilineConduc-tivityMeterLF19FS,MacroDataLogger128K,.22.1IVCWIVCW,.2CODCrCODCr(R20.9003,n=15),Reed,Robert[3,4].,.,.Fig.2EffectsofCODCrloadingrateonCODCrremovalratefortheintegratedvertical-flowconstructedwetland(HRT),,,CODCr(3),CODCrHRT:[CODCr]=23.31exp[1.2576(HRT)]3IVCWCODCrFig.3EffectsofhydraulicretentiontimeonCODCrremovalmassforintegratedvertical-flowconstructedwetland21020406001020304050CODCr[mg/(m2⋅d)]CODCr[mg/(m2⋅d)]0102030400.00.51.01.52.0HRT(d)CODCr(mg/L)6537CODCr:[][]CrCrCOD1.2576dCODd=-t(1)IVCWCODCr,K=1.2576d1.,,.[4],[1],,,USEPA[5].,.,CODCr0.62~2.89d1(26)[6],IVCW,CODCr.2.2IVCW,,,.,,(RTD)[7].,,IVCW,4.4IVCWFig.4RetentiontimedistributioncurveunderdifferentHLRinintegratedvertical-flowconstructedwetland1200mm/d800mm/d4.,,,:∑Δ∑Δ=ttCtttC)()(tsq2,,:1)()(222-∑Δ∑Δ=ttCttCttsq(3)1.11.2m3/(m2·d),sq20.1,0.8m3/(m2·d),,,.,,,,[7].IVCW,.1IVCWTable1StatisticvalueforRTDunderdifferentHLRinintegratedvertical-flowconstructedwetland[m3/(m2·d)]ΣC(t)ΔtΣtC(t)ΔtΣt2C(t)Δt(d)sq21.23082233175756603.757E+110.720.10.82069892545544853.7678E+110.850.22.3IVCWIVCW,,sq20.10sq21,(,sq21).,[7].0500100015002000250001000200030004000min(ms/cm)