不同回流位置对潜流人工湿地氮分布及去除效果的影响张涛

510Vol．5No．10201110ChineseJournalofEnvironmentalEngineeringOct．201111*211．2016202．100044、、、。4NH+4-NTN。1/3NH+4-NTN60%TN20%。X703A1673-9108201110-2204-05EffectofdifferentrecirculationlocationsonremovalefficiencyofnitrogeninsubsurfaceflowconstructedwetlandsZhangTao1SongXinshan1YanDenghua2LuShoubo11．CollegeofEnvironmentalScienceandEngineeringDonghuaUniversityShanghai201620China2．ChinaInstituteofWaterResourcesandHydropowerResearchBeijing100044ChinaAbstractExperimentsofthenitrogenremovalwerecarriedouttostudytheperformanceofdifferentrecir-culationlocationsi．e．inletfrontmiddlebackonthedistributionandremovalefficiencyofnitrogeninsub-surfaceflowconstructedwetlands．ThemultiplecomparisonofnitrogenremovalwithdifferentsituationsindicatedthattherewasnosignificantdifferenceinthespatialdistributionandremovalefficiencyofammonianitrogenNH+4-Namongthefourkindsofrecirculationandnon-recirculationwhiletotalnitrogenTNvariedobviouslyasaresultofdifferentrecirculationlocations．AndthenitrogenremovalresultsshowedthatthecloseritgottotheinletofwetlandthelowerthespatialconcentrationsofTNitreceived．TheremovalefficiencyofTNwashigherthan60%whentheeffluentatrecirculationratioof1/3returnedbacktotheinlet20%higherthanthatofnon-recirculation．Keywordssubsurfaceflowconstructedwetlandsnitrogenremovaldistributionrecirculationlocation510790289732010CB95110210ZR14003002010－06－192010－07－191986～。[e-mail]*[e-mail]、、、12。、3-6。78。9。。N2N2O10。1011。1012。11.1200cm×50cm×70cm220cm410cm10～20mm、15cm5～8mm、20cm2～4mm、15cm。41。1/3、、、。、、121。2009920～25/m2。200911—20105。55cm。1Fig．1Structureofconstructedwetlandandsamplingspotsdistribution1.2COD、、。COD250～350mg/L、TN30～40mg/L、NH+4-N15～20mg/L、C/N10∶1、pH6～7.5。0.72m3/m2·d。14。TN-、NH+4-N13。1．3MATLAB7.0griddatacontourSPSS17.0。22．1。4、5MATLABgriddatacontour。TNNH+4-N2。2Fig.2Spatialvariationsofnitrogenconcentrationinwetlandwithoutrecirculation2TNNH+4-N。TNNH+4-N。50225TNNH+4-NTNNH+4-NNO－3-NTNNH+4-NNO－3-NTNNO－3-NTN。、9。2NH+4-NNH+4-N。NH+4-NNH+4-N。TN。2．2NH+4-N4NH+4-N3。4NH+4-N。NH+4-N1/3NH+4-N。DuncanNH+4-NNH+4-NP=0.05NH+4-N60%50%。NH+4-N。、P=0.05、、。NH+4-N3NH+4-NFig.3Distributionofammonianitrogeninwetlandwithdifferentrecirculationlocations602210NH+4-N65%NH+4-N。CODNH+4-N。2.3TN4TN4。4TN。TNNH+4-N。TNTNTNTNTN。7。N2N2O。TN40%TN。TN。TN65%20%。DuncanTNP=0.054TNFig.4Distributionoftotalnitrogeninwetlandwithdifferentrecirculationlocations70225TNP=0.05。TN。314NH+4-NTN。1/3NH+4-NTN60%TN20.0%。2CODTN。、。1．．2003333359-362WangShiheWangWeiYuYan．Influenceofhydraulicconditionontreatmenteffectofconstructedwetland．Jour-nalofSoutheastUniversityNaturalScienceEdition2003333359-362inChinese2GiraldiD．VitturiM．M．ZaramellaM．etal．Hydro-dynamicsofverticalsubsurfaceflowconstructedwetlandsTracertestswithrhodamineWTandnumericalmodeling．EcologicalEngineering2009352265-2733StottmeisterU．WieβnerA．KuschkP．etal．Effectsofplantsandmicroorganismsinconstructedwetlandsforwastewatertreatment．BiotechnologyAdvances2003221-293-1174．．2005252326-333BaiJunHongOuyangHuaDengWeietal．Areviewonnitrogentransmissionprocessesinnaturalwetlands．ActaEcologicaSinica2005252326-333inChinese5．．2000332-376GreenM．FriedlerE．SafraiI．Enhancingnitrificationinverticalflowconstructedwetlandutilizingapassiveairpump．WaterResearch199832123513-35207．．200626111821-1827ZhaoL．F．ZhuW．ZhaoJ．Nitrogenremovalmecha-nisminconstructedwetlandusedfortreatingpollutedriverwaterwithlowerratioofcarbontonitrogen．ActaScientiaeCircumstantiae200626111821-1827inChinese8．．200722101041-1047SongXinshanDengWeiXiaYongyun．Theorymodelbasedontransformationmechanismsandsolutetransporta-tionofnitrogeninsubflowconstructedwetlands．AdvancesinEarthScience200722101041-1047inChinese9．．20072891965-1969HuangJuanWangShiheYanLuetal．Intensityofni-trificationanddenitrificationinsubsurface-flowconstructedwetlands．EnvironmentalScience20072891965-1969inChinese10．．2009371170-1174CuiLihuaZhengLiniLouQianetal．Effectofdiffer-entrecirculationratiosonremovalefficiencyofnitrogeninunplantedverticalflowconstructedwetlands．ChineseJournalofEnvironmentalEngineering2009371170-1174inChinese11SunG．GrayK．R．BiddlestoneA．J．etal．Treat-mentofagriculturalwastewaterinacombinedtidalflow-downflowreedbedsystem．WaterScienceandTechnolo-gy1999403139-14612．．200728122700-2704RenYongzhengZhangBeipingHaiBenzeng．Removalnitrogeninwavysubsurface-flowconstructedwetlandutili-zingaerationandrecirculation．EnvironmentalScience200728122700-2704inChinese13．4．20028022