抚仙湖窑泥沟人工湿地的除磷效果研究陈源高

＊陈源高1,2　吴献花3　李文朝2　孔志明1＊＊(1,210093;2,210008;3,653100)【】　,1hm2.、,.,.7.75%～81.10%,54.9%.265mg·m-2·d-1,,26.1mg·m-2·d-1,10%,,.,.　　　　1001-9332(2005)10-1913-05　　X171.4　　APhosphorusremovalefficiencyofYaonigouconstructedwetlandonFuxianlakeshore.CHENYuangao1,2,WUXianhua3,LIWenchao2,KONGZhiming1(1StateKeyLaboratoryofPollutionControlandResourceReuse,En-vironmentalSchoolofNanjingUniversity,Nanjing210093,China;2NanjingInstituteofGeographyandLimnology,ChineseAcademyofSciences,Nanjing210008,China;3YuxiNormalCollege,Yuxi653100,Chi-na).-Chin.J.Appl.Ecol.,2005,16(10):1913～1917.TomitigateandcontroltheeutrophicationofthewatersinFuxianLakebay,1hm2Yaonigouconstructedwet-landwasbuiltonthenorthFuxianlakeshore,andthePremovalofthewastewaterfromYaonigouRiverwasin-vestigatedbythetechniquesofprecipitationpond,oxidationpond,andsubsurface-andsurfaceflowconstructedwetland.Theresultsdemonstratedthatthisconstructedwetlandhadaverystrongcapacity(7.8%～81.1%)oftotalphosphorus(TP)removal.TheaverageremovalrateofTPwas54.9%,andtheTPretentioninthecon-structedwetlandwas265mg·m-2·d-1,ofwhich,plantassimilationwas26.1mg·m-2·d-1,about10%ofthetotal.TheTPremovalwasmainlythroughadsorptionandsedimentation,buttheseasonalgrowthdynamicsofmainplantOenanthejavanicacouldhaveadefiniteeffectontheefficiencyofTPremoval.Duringtheexamina-tion,theTPretentioncapacitywasinorderofsubsurfaceflowconstructedwetlandoxidationpondprecipita-tionpondsurfaceflowconstructedwetland.Keywords　FuxianLake,Constructedwetland,Phosphorousremovalefficiency.＊“863”(2002AA601013).＊＊.2004-06-17,2004-09-10.1　　　,N、P,N、P99.1%98.5%.,N、P、CODcrSS81.4%、86%、68%、61%,,,.,,,,.[1,2,14,16,19].,、、[8,9,12,18,26].、、,[4,5,10,25,27,28].,,,,.,.2　2.1　,1.5hm2.,、、　200510　16　10　　　　　　　　　　　　　　　　　　　　　　　　　　　　　CHINESEJOURNALOFAPPLIEDECOLOGY,Oct.2005,16(10)∶1913～1917DOI:10.13287/j.1001-9332.2005.0264,1hm2;、,0.5hm2.313.3hm2,,、、,.1.1　Fig.1SchematicdiagramofYaonigouconstructedwetland.　　,(Oenanthejavanica),5700m2,57%.,415m×15m,60cm.1:3～5cm,(Typhalatifolia);2:0.2～0.5cm,(Phragmitescommunis);3:1～2cm,;4:,.1.1　Table1DesignofcharacteristicsinconstructedwetlandFunctionregionArea(m2)Depth(m)PlantspeciesPurificationmethod　Precipitationtank9001.0～1.5、CannaindicaandTyphalatifoliaSalvageanddepositOxidationpondsPond1:17001.5～1.8Oenanthejavanica3ThreepondsinseriesPond2:17001.5～1.8OenanthejavanicaPond3:12601.5～1.8、TrapaceaeandNenupharHorizontalsubsurfaceflowconstructedwetland9000.4～0.6、、TyphalatifoliaandPhragmitescommunisFourcellsinparallelconnectionSurfaceflow(SF)constructedwetlandSF1:2300SF2:13000.2～0.30.2～0.3Oenanthejavanica、NelumbonuciferaandSagittiariasagittifoliaTwoterracesinse-ries2.2　20023～12,,710,[6]P、N.1m2.3　3.1　,,,0～78000m3·d-1.5000m3·d-1,48h.,15.6,3h,,,,;,6d,,;,1500～11000m3·d-1,4400m3·d-1,51.8h,.,TP0.53～2.20mg·L-1,1.10mg·L-1,2.2　Table2Concentrationofinletpollutantsinconstructedwetland(mg·L-1)SSBOD5CODcrTPPO-4-PTNConcentration19～1229.5～64.126.9～1940.68～2.200.31～0.885.13～14.93Average6051.276.81.100.699.003.2　,,,750t,0.238%,179kg.,,,,.,TP2.7%,P147mg·m-2·d-1,15.6kg·m-2,1.44kg.SS,62%,,、.C、N、P(3).3.3　3,123　C、N、PTable3ContentofC,NandPintheinletandoutletsedimentofpre-cipitationtank(%)Jul.10InletOutletOct.29InletOutletC2.2231.2914.5461.454N0.1900.1370.5760.246P0.1090.1010.1760.1031914　　　　　　　　　　　　　　　　　　　　　　　16,80%,3.,.,TP,70%;,,TP,30%.,TP、0.68～2.180.31～1.50mg·L-1,3.0%～68.5%,27.8%(2),283mg·m-2·d-1.,45kg·m-2,57kg;12.8kg·m-2,6.8kg.13%.,SS,20%～90.32%,60%.2　TPFig.2ConcentrationandremovalrateofTPintheoxidationpond.3.4　TP0.31～1.50mg·L-1,11.19%～60.00%,24%(3),896mg·m-2·d-1,3.1,7.6.,,1.1kg,1.4kg,1%,TP.4,.TP1(42.23%)4(36.19%)2(33.49%)3(21.14%).,131,,,,3　TPFig.3ConcentrationandremovalrateofTPinsubsurfaceflowcon-structedwetland.,3～5cm1,.,,,.3.5　.TN40%,2,4,CODCr,TP,15.2%,4.117mg·m-2·d-1,28kg,18%,.4　Table4Concentrationofpollutantsintheoutletofsurfaceflowcon-structedwetland(mg·L-1)SSBOD5CODCrTPTNNH3-NOutletconcentration0.8～103.0～5.34.1～24.50.503.720.3～4.53.6　TP0.68～2.20mg·L-1,1.10mg·L-1,4,TP0.5mg·L-1,54.9%(4).、,[30].265mg·m-2·d-1,,96kg,10%.191510　　　　　　　　　　　　　:　　　　　　　　　　　4　Fig.4ConcentrationandremovalrateofTPinYaonigouconstructedwetland.4　　　,ICP.,FeAl10%～20%,CaMg,,Ca、Mg、FeAl.(Ca2+、Mg2+、Fe3+、Al3+),[3,13,15,17,21].,,,,;,,,[7,29].90%,.,,97%99%.,[11,20,23].[22],,、.,,、、、.,,、、,N、P[24,30].10%,.,,13%18%.P,,、,,P,;,、,,[22,27].,,.,,.,,10℃,.1　BraskerudBC.2002.Factorsaffectingnitrogenretentioninsmallconstructedwetlandstreatingagriculturalnon-pointsourcepollu-tion.EcolEng,18:351～3702　CarstenS.2003.Treatmentofrainbowtroutfarmeffluentsincon-structedwetlandwithemergentplantsandsubsurfacehorizontalwaterflow.Aquaculture,217:207～2213　ChescheirGM,SkaggsRW,GilliamJW.1992.Evaluationofwet-landbufferareasfortreatmentofpumpedagriculturaldrainagewa-ter.TransAmerSocAgricEng,35:175～1824　ChenG-Z(),MaM-J(),LanC-Y(),etal.1990.InvestigationonecologysystemofpondpurifiedbyCattail.ChinJEcol(),9(4):11～15(inChinese)5　CuiL-H(),ZhuX-Z(),LuoS-M(),etal.2003.Purificationefficiencyofvertical-flowwetlandsystemcon-structedbycinderandturfsubstrateonmunicipalwastewater.ChinJApplEcol(),14(4):597～60