潜流型人工湿地对氮污染物的去除效果研究

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1、V1d401；12分娄号：——X丝4—一g级——UDC．—』丝—一学号-—盟鳢Q!一东南大掌博士学位论文潜流型人工湿地对氮污染物的去除效果研究研冗生姓名：雒r维国导帅姓名：王世翘煎攫申请学位级别—二垡副妻±学科专业名称—里喳錾氐l论文提交日期』迦里虬旦一论文答辩日期—垫丛生里且—旦学位授予单位—童直盘』L学位授予日期—垫鳗jL且—旦答辩委员会主席——评弼人2005年月日东南大学博士学位论文Abstract’vttenusedinw嬲tgwatern℃a吐∞{m。theconstructedwetlandownmanyadvantagesofgoodwnterqu

2、alityofoutlet,Iowcostofconstructionanddinlyoperation．conveniei正eofm缸lageme址andacstba配value．especiallyiscoasLstentwiththelzt呛stenl咖nⅡl￡Ⅱ阻Imademayofdimiinsningandspreadingforminnationalwastewalertreament,andisworthyofpopularizinginsmallandmiddlingcities．However,tbepollutantl_emovaleffi

3、ciencyofconstructedwetlandisgreatlyaffectedbysuchfactors∞airtemperature．characteristicof五Ⅲngmaterialsinwetland．wetlandplants，microorganismsi11soil，theevaporationandtranspirationofwetland,howeverdlasefactorslinerthefⅡnIlerimprovingofpad伽ngeffectinwetland,nowbecomingtheblockingbottlene

4、ckinextendingappligationofwetland．Aimingaltheaffecdngfactorsofnitrogenremovalandusingtheout】etwaterofprimesedimentationtankastheinletwaterofwetland,duringtheperiodofSept．2002toApril．2005．whenthecontractedwetlandwereraninstableconditions，thetclado]lbetweennitrogenremovalefficierlcyand

5、itsimpactingfactorswassmdledtlⅡoughtheserialcon$tractedwetland．Thefollowingexperimentsarei∞lu出d11)theanalysisofnitr'ogenremovaleffectofdifferentwetlandplam,forthefirsttime．nKchanginglawsofphotosynthesisandevapotmmpirntianwetlandplantsandrelationbetweenlaWSandnitrogenremovaleffectwele

6、studiedinexperimem,fromanother∞血ofviewtheroleofplantsinwetlandnitrogenremo'Falwasstudied；(2)thewctlmadfallingmaterialspurifiedpollutantsbyNH4+-NandTNabsorption,andthetransforminglawsofNO,'-Nintheprocess；(3)nitrifyingbacteriacommunitywerestudiedbyusingmethodofhIPN-FISHandstatisticalda

7、mwe∞collected；(4)thestudyofD0distributionindifferentplantwedandanditseffectsonnitrogenremovalweiediscussed；(5)theimpactsofwetlandconstructionfornhydmulicconditionandopemfionconditiononnitrogenrentovinwerestudiedalltogether,endedwithsoIPmnitrogenremovalintem卿ing蹦p既知警监．Integratingtheex

8、perimentdata