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