表面流人工湿地在滇池湖滨区面源污染控制中的应用研究_李跃勋
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2020-03-19 08:07:57
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农业环境科学学报2009,28(10):2155-2160JournalofAgro-EnvironmentScience摘要:在滇池湖滨带核心区退塘还湖措施的基础上,通过对福保村湖滨废弃鱼塘改造,建立了表面流人工湿地系统,对该区域内面源污水处理进行了研究。研究表明,系统年削减入湖污染物COD、TN、TP负荷分别达7840、650和20kg,单位面积削减量分别为4704、390和12kg·hm-2,削减率分别为28.02%、35.93%和4.86%;系统对污水中COD、NH3-N、TN、TP的去除率分别为15.57%、56.76%、40.37%和35.64%,且除COD外,旱季污染物去除率高于雨季;推流曝气可提高系统对污染物的去除效果,使NH3-N、TN、TP的去除率分别提高约39%、23%和21%,而COD去除率变化不明显。该系统为滇池湖滨区退塘还湖和湖滨生态系统重建提供了重要的技术示范,对滇池富营养化防治工作的开展具有重要意义。关键词:滇池;表面流人工湿地;湖滨区;面源污染中图分类号:X703.1文献标志码:A文章编号:1672-2043(2009)10-2155-06表面流人工湿地在滇池湖滨区面源污染控制中的应用研究李跃勋1,徐晓梅1,洪昌海1,何佳1,李宗逊1,陈云波1,李中杰1,2(1.昆明市环境科学研究院,云南昆明650032;2.昆明天图环境咨询有限公司,云南昆明650032)TheApplicationStudyonSurfaceConstructedWetlandsforNon-PointSourcePollutionControlattheDi-anchiLakeshoreRegionLIYue-xun1,XUXiao-mei1,HONGChang-hai1,HEJia1,LIZong-xun1,CHENYun-bo1,LIZhong-jie1,2(1.KunmingResearchAcademyofEnvironmentSciences,Kunming650032,China;2.KunmingTiantuCorporationofEnvironmentCounsel-ing,Kunming650032,China)Abstract:Inthisstudy,weexaminedtheeffectofconstructedwetlandsinformerfishpondsalongtheLakeDianchishorelineasanenviron-mentalprotectionmeasure.Abandonedfish-pondsinFubaoVillagewereusedforconstructingasurfaceflowwetlandsystemtotreatagricul-turalnon-pointsourcerunoffinthearea.Theresultsindicatedthat,thetotalreduction(andreductionperhectare)andreductionrateofCOD,TN,TPdischargedintothelakewere7840kg(4704kg·hm-2),650kg(390kg·hm-2),20kg(12kg·hm-2)and28.02%,35.93%,4.86%respectively.TheCOD,NH3-N,TNandTPremovalratesinthesystemwere15.57%,56.76%,40.37%and35.64%,whichwerehigherinthedryseasonthanintherainyseasonexceptforCOD.Plug-flowaerationimprovedtheremovalperformanceofthesystem,withremovalratesofNH3-N,TN,TPenhancedby39%,23%,21%respectively;however,CODremovalratewasnotenhanced.Inshort,thisstudyprovidesanim-portanttechnicalexampleonimplementingthemeasureofreturningpondstothelakeandrebuildingthelakeshorebio-system,bothofwhicharesignificanttoprotectingLakeDianchi.Keywords:Dianchi;surfaceconstructedwetlands;lakeshoreregion;non-pointsourcepollution收稿日期:2009-02-18基金项
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