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时间:2019-05-15
《草本缓冲带优化配置对氮磷的去除效果-杨帆》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第39卷第2期东北林业大学学报Vol.39No.22011年2月JOURNALOFNORTHEASTFORESTRYUNIVERSITYFeb.20111)草本缓冲带优化配置对氮磷的去除效果杨帆高大文高辉(东北林业大学,哈尔滨,150040)摘要利用自行设计的小型试验装置模拟缓冲带,选择东北地区草木犀、白三叶、马唐、夏枯草4种常见植物,通过人工配水模拟农田径流水,采用草种不同栽种方式及草皮与其他生物处理方式相结合的方法,开展缓冲带对污染物的净化效果试验研究。结果表明,在渗流中,草种不同栽种方式和草皮与其他生物处理方式结合的缓冲+带,3种混栽方式的NH4—N、全P的去除效果最高分别为59.
2、80%、56.81%。在径流中,草种不同栽种方式中3+种混栽方式的NH4—N、全P的去除效果最高分别为23.30%、22.30%;草皮与其他生物处理方式结合缓冲带,3+种混栽+小沟对全P去除效果最高达27.4%,3种混栽+人工浮床对NH4—N去除效果最高,达30.1%。在本试验条件下,3种混栽方式对渗流的净化效果较好,而草皮与其他生物处理方式结合的缓冲带对径流有较好的净化效果。关键词缓冲带;径流;渗流;栽种方式;生物处理方式分类号X171.1EffectsofNitrogenandPhosphorusRemovalbyOptimizingtheConfigurationofHerbace
3、ousBufferStrips/YangFan,GaoDawen,GaoHui(SchoolofForestry,NortheastForestryUniversity,Harbin150040,P.R.China)//JournalofNortheastForestryUniversity.-2011,39(2).-57~59,78Anexperimentwasconductedtostudytheeffectsofrunoffpollutantsremovalinaself-designedlab-scalemodel.Fourspeciesofeconomicplants(Meli
4、lotussuaveolens,Trifoliumrepens,DigitariasanguinalisandPrunellaasiatica)werese-lectedfromnortheastChinaasexperimentalmaterials.Thepurifyingeffectsofdifferentconfigurationwaysofplantingsandsodcombinedwithotherbiologicaltreatmentswerestudiedthroughsimulatingfarmlandrunoffwithartificialwater.Results
5、showedthat,amongalltheconfigurationways,themixedplantingofM.suaveolens,T.repensandD.sanguinalishad++highremovalcapacityofNH4-Nandtotalphosphorusinseepageflow,andtheremovalrateofNH4-Nreached59.+80%,andthatoftotalphosphoruswas56.81%;intherunoff,thehighestremovalratesofNH4-Nandtotalphosphoruswere22.
6、30%and23.30%fordifferentplantingways.Consideringdifferentconfigurationwaysofsodcombinedwithotherbiologicaltreatments,themodeofmixedplantingofM.suaveolens,T.repensandD.sanguinaliswithasmallditchhada+hightotalphosphorusremovalrate(27.4%),andtheNH4-NremovalrateofthemodeofmixedplantingofM.suaveo-lens
7、,T.repensandD.sanguinaliswithartificialfloatingbedreached30.1%,whichshowedthebestremovaleffect.Inthisexperimentalcondition,themodeofthemixedplantingofM.suaveolens,T.repensandD.sanguinalishasbetterpu-rifyingeffectonthes
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