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33/COD*266100//、COD。COD70.3%//(O-A-O)COD90.1%19.8%O-A-O17.4mg/LO-A-OCOD50.0~60.0mg/LO-A-OCOD30.4%20.8%。O-A-OCODCOD。/CODX703Adoi10.3969/j.issn.1003-6504.2010.6E.0031003-6504(2010)5E-0008-04RemovalEfficiencyofCODinAerobic/anaerobicSubsurfaceFlowConstructedWetlandsLIFeng-min,SONGNi,SHANShi,WANGZhen-yuCollegeofEnvironmentalScienceandEngineering,OceanUniversityofChina,Qingdao,266100AbstractInordertoadjustthedissolvedoxygeninthetraditionalsubsurfaceflowconstructedwetlands(SFCWs)andincreasethepurificationefficiencyofsewagewater,thetraditionalSFCWsweredividedintodifferentsectionswithenhancedfunctions.Differentkindsofaerobic/anaerobicSFCWsweredesignedtostudytheinfluenceofratioandlocationofaerobic/anaerobic,artificialaerationandotherfactorsontheCODineffluent.ThepurificationefficiencyofthewaterinthisstudywascomparedwiththatintraditionalSFCWs.TheresultsshowthattheremovalefficiencyofCODintraditionalSFCWswas70.3%but90.1%inaerobic/anaerobic/aerobicSFCWswithaeration(O-A-OSFCWswithaeration)treatment.Aerationinthefrontandintherear,andanaerobictreatmentinthemiddlewasusedinthistreatment.CODconcentrationintheeffluentofO-A-OSFCWswithaerationtreatmentwas17.4mg/L,whilethatofO-A-OSFCWswithoutaerationwasat50.0~60.0mg/L.TheremovalefficienciesofCODinnewSFCWswithaerationinthefrontandintherearwereincreasedby30.4%and20.8%.Intheexperimentalconditions,O-A-OSFCWswithaerationhadthehighestremovalefficiencyofCOD,andthewaterqualityofthesamestructureSFCWshadsignificantimprovementafteraeration.Inaddition,SFCWswithaerationinthefrontcouldincreaseremovalrateofCODremarkablely.Keywordsaerationdissolvedoxygenaerobic/anaerobicCODremovalefficiency2009-12-172010－03－092008ZX07010-008308016(2006BAC01A13)(1975-)15954200011lfm01@ouc.edu.cn*13793281255wang1628@ouc.edu.cn。COD、N。、、、、。、、、[1-2][3-5]。。EnvironmentalScience&Technology336E20106Vol.33No.6EJune20106E,/COD1.3COD、DOpH。COD《》(4)[13]pHpHDOWTW2B20-0017。22.1SFCWsCOD6SFCWsCOD3。。Alexandros[6]2COD52.5%62.0%。COD[7-8]。[9]2COD70~140mg/L30mg/L。[10]HRTCOD85%。COD。COD[11-12]COD。COD。、/COD、、。11.1(SubsurfaceFlowConstructedWet－lands,SFCWs)PVC××1.25m×0.2m×0.3m1.5m2(3~5cm)、1~3cm、5、15、5cm。61--aerobic-anaerobic-aerobicO-A-O2--O-A-O3--A-A-O4--A-A-O5--O-O-A6。1。31cm。610、30、50、70、90110cm2。。。1.2、、、、NH42SO4、NaHCO3、Na2CO3CaC121。COD≤200mg/L20mg/L。5d6cm/d。2。CODmg/LNH4+-Nmg/LNO3--Nmg/LNO2--Nmg/LpHT℃184.5521.720.250.0237~820~251933COD184.6mg/LSFCWsCOD100mg/L。14dO-A-OSFCWsCOD17.4mg/LO-A-OSFCWsCOD50.0~60.0mg/LSFCWsCOD。O-O-A、A-A-OCOD41.748.1mg/LO-A-O。COD。2.2SFCWsCOD46SFCWsCOD65%SFCWsCOD70.3%O-A-OCOD90.1%O-O-A76.5%A-A-OCOD72.8%3COD19.8%、6.23%2.5%O-A-OA-A-OCOD60%。O-A-OSFCWsCOD。2.3SFCWsCODCOD。5SFCWsO-A-OCOD50.4%69.4%O-A-O80.8%90.1%COD30.4%20.8%COD。[14]CODCOD62.1%58.1%22.9%18.9%。O-A-OCOD80.8%80%~90%SFCWsCODCODCOD。2.4DO、pHCOD66SFCWsDO7.40~8.30mg/L。A-A-O、O-A-O7.4、7.5mg/LSFCWs0.430.40mg/LO-A-O、A-A-O、O-O-ADO8.138.23、8.26、8.08.13mg/LDO7.87mg/L7.93mg/L。SFCWsDOSFCWs。106E[15]。[16]。[17-19]。CODCOD。pHpH。6SFCWspH7pH6.5~7.5。O-A-OpH6.81O-O-ApH6.94A-A-OpH7.18O-A-OA-A-OpH7.33pH7.34。SFCWs3pHO-A-OpHpHCOD。3SFCWs。O-A-OSFCWsCOD90.1%。SFCWsDOCOD。SFCWsCODCOD。SFCWs、。[][1]RagusaSRMcNevinDQasemSMitchellCetal.In－dicatorsofbio覱lmdevelopmentandactivityinconstructedwetlandsmicrososms[J].WaterResearch200438(12):2865-2873.[2]PuigagutJSalvadoHGarciaDetal.Comparisonofmi－crofaunacommunitiesinfullscalesubsurfaceflowcon－structedwetlandsusedassecondaryandtertiarytreatment[J].WaterResearch200741(8):1645-1652.[3].[J].200925(4):53-55.YuJieTianNing-ningQianJing-huaetal.Applicationofconstructedwetlandtowastewateradvancedtreatmentandprojectdesign[J].200925(4):53-55.(inChinese)[4]HuettDOMorrisSGSmithGetal.Nitrogenandphos－phorusremovalfromplantnurseryrunoffinvegetatedandunvegetatedsubsurfaceflowwetlands[J].WaterResearch200539(14):3259-3272.[5]TaoWHallKJDuffSJB.Performanceevaluationandeffectsofhydraulicretentiontimeandmassloadingrateontreatmentofwoodwasteleachateinsurfaceflowconstructedwetlands[J].EcologicalEngineering200626(3):252-265.[6]AlexandrosISChristosSAGeorgiosDGetal.Efflu－entqualityimprovementoftwopilot-scale,horizontalsub－surfaceflowconstructedwetlandsusingnaturalzeolite(clinoptilolite)[J].MicroporousandMesoporousMaterials2009124(1-3):131-143.[7].COD[J].200829(12):3387-3392.DaiYuan-yuan,YangXin-pingZhouLi.EffectofreedrhizosphereonnitrogenandCODremovalefficiencyinsub－surfaceflowconstructedwetlands[J].EnvironmentalSci－ence200829(12):3387-3392.(inChinese)[8]JiriDTomasP,HanaC.Redoxpotentialdynamicsinahorizontalsubsurfaceflowconstructedwetlandforwastew－aterTreatment:diel,seasonalandspatialfluctuations[J].E－cologicalEngineering200834(3):223-232.[9].[J].200728(12):2700-2704.RenYong-zhengZhangBei-pingHaiBen-zeng.Re－movalnitrogeninwavysubsurface-flowconstructedwet－landutilizingaerationandrecirculation[J].EnvironmentalScience200728(12):2700-2704.(inChinese)[10].[J].200728(4)737-740.YanLuWangShi-heZhongQiu-shuangetal.Studyonrunningcharacteristicsofaeratingsubsurfaceflowwet－lands[J].EnvironmentalScience200728(4)737-740.(in25,/COD116E11Chinese)[11].[J].200324(5)92-96.LiuChao-xiangHuHong-yingZhan