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4219201110YangtzeRiverVol．42No．19Oct．20112011－06－14“”2008ZX07209－002－002IWHRKF201013。E－mailzhao－zhengguo@sina．com1001－4179201119－0051－03450011。4a。40%50%。。X171AHammer“、、”1。、、。、2、、3－4。1。。92%。、。、、。4m3/s0．4～0．6m3/s5。7．3hm24ⅠⅡⅢⅣ。。Ⅳ4～5、、、。5。1。22006～20093DOI:10.16232/j.cnki.1001-4179.2011.19.0142011。2BOD5。2Ⅳ～Ⅴ3BOD5BOD5ⅠBOD587%Ⅱ82%Ⅲ75%BOD5Ⅱ～Ⅲ。50%～75%。BOD5。12BOD53NH3－N。3NH4－NⅠ、ⅡⅢ80%67%52%Ⅲ。3NH4－N4NO3－N。4NO3－NⅠⅡⅢ50%41%40%。5TN。TNⅠⅡⅢ61%54%47%Ⅴ50%40%35%。TN。TN5ⅠTN。①N②N③N。4NO3－N5TN6CODMn。6CODMnⅠⅡⅢ48%41%32%Ⅱ～Ⅲ。7SS。7SS67%50%。SS。25196CODMn7SS、。3150%。2。3。4①②。1HammerDA．ConstrustedwetlandsforwastewatertreatmentM．MichiganLewisPublishersinc．1989．2LiSRDingTWangS．Reedbedstreatmentformunicipalandindus-trialwastewaterinBeijingJ．JournalInstitutionWaterEnvironmentManage199596581－588．3．J．200523670－72．4．J．2004215471－473．5．R．2006．StudyoncapacityofsteppedwaterqualitypurificationofsubsurfaceflowconstructedwetlandinNorthChinaZHAOZhenguoLIULiCollegeofWaterConservancyNorthChinaUniversityofWaterResourcesandElectricPowerZhengzhou450011ChinaAbstractSubsurfaceflowconstructedwetlandisthemaintypeoftheconstructedwetlandandfurtherstudyneedstobecar-riedoutonthesteppedwaterqualitypurificationeffect．Bytakingblacksoillow－lyinggroundofGuantingReservoirasthere-searchobjectthroughnearly4years'experimentsthesteppedwaterqualitypurificationeffectofdifferentpollutantsofthewet-landisresearched．Theresearchresultshowsthatthewaterqualitypurificationeffectoftheconstructedwetlandisrelativelyobvi-ousandtheaverageremovalratioofthemainpollutantsisabove40%thefirstandsecondstepshavethelargestcapabilityofwaterqualitypurificationandtheratioofmostoftheirremovalratiotothetotalwastewaterremovalrateisbasicallyover50%thewetlandshavefurtherpotentialforwaterpurification．BasedontheresultsthesuggestionsfortheconstructionofartificialwetlandsinNorthChinaandresearchdirectionareproposedandthefurtherresearchdirectionispointedout．Keywordssubsurfaceflowconstructedwetlandpurificationeffectalongthewayremovalratio35