潮汐流人工湿地低温下NH4N去除模型的比较和优化叶捷

31720117ActaScientiaeCircumstantiaeVol．31No．7Jul．2011No．2008ZX07208-003No．50708101/E080402SupportedbytheNationalKeyScientificandTechnologicalProjectforWaterPollutionControlandManagementNo．2008ZX07208-003andtheNationalNaturalScienceFoundationofChinaNo．50708101/E0804021985—[e-mail]*[e-mail]1985—[e-mail]*[e-mail]+4-NJ．3171456-1463YeJPengJFGaoHJetal．2011．ComparisonandoptimizationofaNH+4-Nremovalmodelofatidal-flowconstructedwetlandinlowtemperatureseasonsJ．ActaScientiaeCircumstantiae3171456-1463NH+4-N12222*21311．4100822．1000123．1000832010-09-072010-10-212010-11-083NH+4-N、MonodNH+4-N．9～13℃3NH+4-NMonodNH+4-NR2=0．9035．MonodMonodNH+4-NNH+4-NTDO．NH+4-N0253-2468201107-1456-08X703AComparisonandoptimizationofaNH+4-Nremovalmodelofatidal-flowconstructedwetlandinlowtemperatureseasonsYEJie12PENGJianfeng2GAOHongjie2SONGYonghui2*QIUGuanglei2ZHANGPanyue13ZENGGuangming11．CollegeofEnvironmentalScienceandEngineeringHunanUniversityKeyLaboratoryofEnvironmentalBiologyandPollutionControlHunanUniversityMinistryofEducationChangsha4100822．DepartmentofUrbanWaterEnvironmentalResearchChineseResearchAcademyofEnvironmentalSciencesBeijing1000123．CollegeofEnvironmentalScienceandEngineeringBeijingForestryUniversityBeijing100083Received7September2010receivedinrevisedform21October2010accepted8November2010AbstractTosolvetheproblemofthelowefficiencyofnitrogenremovalunderlowtemperaturesinconstructedwetlandswestudiedthetreatmentperformanceofatidal-flowconstructedwetlandwiththreerunningcyclesperdayunderlowtemperatureconditions．WesimulatedtheNH+4-NremovalusingtheapparentkineticmodelmultipleregressionmodelandMonod-mechanismmodel．Theexperimentalresultsshowedthatthetidal-flowconstructedwetlandwiththreerunningcyclesperdayhadahighefficiencyforNH+4-Nremovalat9～13℃anditfittheMonod-mechanismmodelreasonablywellwithacoefficientofdeterminationR2of0．9035．BasedonthisconclusionthelocalsensitivityoftheMonod-mechanismmodelwasanalyzedbymodifiedMorrisscreeningwhichshowedthatintheMonod-mechanismmodelCinwasahighlysensitiveparametertheaveragewatertemperatureTwasasensitiveparameterandDOwasamediumsensitiveparameter．Keywordstidal-flowconstructedwetlandNH+4-NlowtemperaturedynamicmodelMorrisscreeningmethodlocalsensitivityanalysisDOI:10.13671/j.hjkxxb.2011.07.0207NH+4-N1Introduction--Chanetal．2008．、、、Laietal．2009Chungetal．2008Teeetal．2009、1995Grossetal．2007．-．---4．、．．2009．NH+4-NNH+4-NNH+4-N3NH+4-N、MonodNH+4-NNH+4-NNH+4-N．2Materialsandmethods2．1130cm、80cm0．042m3．65cm25～50mm15cm8～12mm20cm3～5mm30cm．PLC．1Fig．1Schematicoftheexperimentalequipment2．2CODCr110．00～175．40mg·L－1NH+4-N29．04～44．75mg·L－1PO3－4-P3．36～5．46mg·L－1pH6．0～7．0．2．3COD、NH+4-N、SEPA2002．T、DOYSIDOYSI．2．40．2m3·m－2·d－1．、8．0h4．0h．2009101200911～20104．200911～201029℃20103～2010413℃．2．52．5．12．7541311Table1ParameterswithrespecttoNH+4-NremovalmodelsT℃8～17DOmg·L－10．43～0．72k1h－10．129k0h－13．406CoutNH+4-Nmg·L－116．43～33．45CinNH+4-Nmg·L－129．04～44．75CTh4VL42μmaxmg·L－10．00164Ksmg·L－16．199xmg·L－1771．5θ1．04Kadlec1995Y0．2MetcalfandEddyInc．2003komg·L－10．2MetcalfandEddyInc．2003mgmg．2．5．2Kadlecetal．20002006．．Chanetal．20082009Vdcdt=Qin－Qout+Vr1cmg·L－1rNH+4-Nh－1、、．NH+4-NChanetal．2008VdNH+4-Ndt=Vr+Qin－Qout2Qin、Qoutmg·h－1．NH+4-NQin=Qout=0．2VdNH+4-Ndt=Vr3NH+4-Nrr=－kncn4n．n=04r=－k0553k0=－Cout－CinCT6Cout=Cin－k0CT7n=14r=－k1c883k1=lnCin－lnCoutCT9Cout=Cine－k1CT102．5．3y=fx1x2x3x4……11NH+4-NCin、COD、DO、TNH+4-NCoutNH+4-NCout85417NH+4-NChanetal．2008Cout=fCin、COD、DO、T122．5．4MonodNH+4-N、、．VdNH+4-Ndt=V∑mj=1rj+Qin－Qout13rj、、、．NH+4-NQin=Qout=0．VdNH+4-Ndt=V∑mj=1rj14NH+4-NpH6．0～7．0NH+4-NNH+4-N14VdNH+4-Ndt=Vrd15rdNH+4-Nh－1．Cin、DO、TMonodrdChanetal．2008rd=－1YumaxCinKS+CinxDOkO+DOθT－201615、16NH+4-NCout=Cin－CT1YumaxCinKS+CinxDOkO+DOθT－20172．6“”．MorrisFrancos2003Zadoretal．2006．2004S=∑n－1i=0Yi+1－Yi/Y0Pi+1－Pi/n18SYiiYi+1i+1Y0PiiPi+1i+1n．3Results3．1NH+4-N22010Sunetal．1998．NH+4-NNH+4-N．“”、Behrendsetal．2001NH+4-N．200911NH+4-N37．68mg·L－13NH+4-N11．71%NH+4-N20103NH+4-N35．74mg·L－1NH+4-N41．23%．NH+4-N135．25%．3．23．2．1．69NH+4-N1920．954131Cout=Cine－0．4781619Cout=Cin－13．6072202NH+4-N．NH+4-N．3R2=0．7371δ=2．074R2=0．8036δ=1．780．．3NH+4-NNH+4-NNH+4-NNH+4-NNH+4-NNH+4-N．2、Fig．2ComparisonofthesimulatedNH+4-NwithobservedNH+4-N3Fig．3Fitsofpredictionsfromtheapparentdynamicmodel3．2．2．SPSSNH+4-NNH+4-NCin、COD、DO、TY=－3．591－0．278X1+0．896X2－10．496X3+0．014X421YNH+4-NCoutmg·L－1X1T℃X2NH+4-NCinmg·L－1X3DOmg·L－1X4CODmg·L－1．4NH+4-N．NH+4-N．5R2=0．8863δ=1.369NH+4-N．4Fig．4ComparisonofthesimulatedNH+4-NwithobservedNH+4-NNH+4-NCoutCin、COD0．8960．014NH+4-NCout、Austin2006．CoutDO、TDO－10．496DODO2006T－0．2782008．06417NH+4-N5Fig．5Fitsofpredictionsfromthemultivariateregressionmodel3．2．3MonodμmaxKsMonodμmaxKsθ、Y、k0Hallingetal．1996Kadlec1995MetcalfandEddyInc．2003NH+4-NMonodCout=Cin－26．22×Cin6．199+CinDO0．2+DOθT－20226MonodFig．6ComparisonofthesimulatedNH+4-NwithobservedNH+4-N6MonodNH+4-N．．7R2=0.9035δ=1．232．7y=xθ、Y、k0Coutθ、k0Yθk0TDOTDOHallingetal．1996Kadlec1995MetcalfandEddyInc．2003．NH+4-N22CoutCinTDONH+4-N．7MonodFig．7Fitsofpredictions