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1,2,2,2,3(1., 100083;2., 100084;3., 200092):.,0.6m/d,、、、38.9%58.2%,93.11%78.84%,10.01%48.99%,38.81%98.45%..,、、28%、67%、35%.、,、.:;;;;/:X703.1 :A :0250-3301(2003)03-03-0158:“”(K99-05-35-02):(1974～),,,.:2002-06-12;:2002-08-26NitrogenRemovalinaPilot-ScaleZeoliteReedBedSystemLiXudong1,ZhangXu2,XueYu2,LiGuanghe2,ZhangRongshe3(1.SchoolofWaterResourcesandEnviron-ment,ChinaUniversityofGeosciences,Beijing100083,China;2.Dept.ofEnvironmentalSciencesandEngineering,TsinghuaUniversity,Beijing100084,China;3.CollegeofEnvironmentalSciencesandEngineering,TongjiUniversi-ty,Shanghai200092,China)Abstract:Inthisstudy,thenitrogenremovalefficacyofapilot-scalezeolitereedbedsystemwastestedforthetreatmentofagriculturalwastewateranddomesticwastewateretc.Atameanhydraulicloadingof0.6m/d,thetotalnitrogen,ammonia,nitrate,nitriteinwinterandspringwerereducedacrossthesystemby38.9%and58.2%,93.11%and78.84%,10.01%and48.99%,38.81%and98.45%,respectively.Thesystemperformanceinspringwasmuchbet-terthaninwinter.Underthesameconditions,thetotalnitrogen,ammonia,nitrateremovalrateofzeolitereedbedwere28%,67%,35%higherthanthatofgravelreedbed.Theammoniaadsorptionandionexchangeonzeoliteandbiologicalnitrogenremovalthroughnitrificationanddenitrificationwerethemainremovalmechanismofnitrogeninthezeolitereedbed.Keywords:zeolite;subsurfacewetland;nitrogenremoval;adsorption;nitrification/denitrification ,、[1,2].、、、,,,50%～60%[3].、、,,,.,、,,、,[4,5]..1 (1) 6m,1m,0.6m,,1%,5～8cm,.40cm2～4cm,20cm,.,,,2～4cm.,、,、.20018,2,.(2) ,、.1.24320035 ENVIRONMENTALSCIENCEVol.24,No.3May,2003DOI:10.13227/j.hjkx.2003.03.0321 /mg·L-1Table1 Characterizationofthewastewater/mg·L-1 TNNH3-NNO-3-NNO-2-NCOD15.425.156.260.1635.750.1121.5026.461.37153.8 (3) TN、NH3-N、NO-3-N、NO-2-NCOD,-、、、N-(1-)-.TN.2 0.6m/d(1d),7,2.2 1)Table2 AverageperformanceofzeolitereedbedinwinterandspringTNNH3-NNO-3-NNO-2-N/mg·L-123.266.298.641.15/mg·L-114.210.437.780.70/%38.8993.1110.0138.81/mg·L-124.908.549.211.34/mg·L-110.421.804.700.02/%58.1678.8448.9998.45 1)122.1 TN2,TN38.89%58.16%,.TNNH3-N、NO-3-N、NO-2-N(1,2),TN34.3%、37%、23.3%5.4%.,TNNO-3-N、NH3-NNO-2-N.TNTNNO-3-N、NH3-N.1(,).1,TN4.0m.:NH3-N,NH3-N、,NH3-NNO-3-N,NO-3-NN2N2O.,.90%.,0.5m3.77%,TN3.6%.TN.1 Fig.1 Changesofnitrogencomponentsconcentrationwithdistance2.2 NH3-N,,93%,、,、,、NH3-N.,NH3-N,78.8%.,NH3-N、.NH3-N,NH3-NNO-3-N,,,NH3-N.,.,,NH3-N,,NH3-N.NH3-N,、NH3-N.3、、、NH3-N.1593 ,NH3-N,.3 NH3-N[3]Table3 AmmoniaremovalofsometypicalconstructedwetlandsNH3-N/%/d/m1)/%DenhamSprings,LA-132810.6150Carville,LA-221.40.7650Mandeville,LA-500.70.6150Greenleaves,LA-1410.6150DegussaCorp.,AL4510.6150Moterey,VA60.90.91307910.6090 1)2.3 NO-3-N、NO-2-NNO-3-N、NO-2-N.,5～40℃,10℃,,8℃.,NO-3-N,,.,NO-3-N、NO-2-N,10%38.81%.,,18℃,,NO-3-N、NO-2-N49%98.5%.,C/N.,C/N(COD)4～5[6].1,COD/TN3,、NO-3-NNO-2-N.3 ,,,2.2,,,NH3-N,NH3-N.(400～800m2/g),[5],,NO-3-N、NO-2-N.,.2 Fig.2 Zeolitebednitrogencomponentsremovalvs.gravelbedunderthesameconditions4 (1).0.6m/d,,TN58.16%;NH3-N,79%..(2)NH3-N、、;,.(3),,TN、NH3-N、NO-3-N28%、67%、35%.:1 SunG,GrayKR,BiddlestoneAJetal.Treatmentofagri-culturalwastewaterinacombinedtidalflow-downflowreedbedsystem.Wat.Sci.Tech.,1999,40(3):139～146.2 AndrewWood.Constructedwetlandsinwaterpollutioncon-trol:fundmentalstotheirunderstanding.Wat.Sci.Tech.,1995,32(3):21～29.3 USEPA.Subsurfaceflowconstructedwetlandsforwastewa-tertreatment:ATechnologyAssessment.1993.4 ,..,1998,24(7):60～63.5 ,,..,2000,21(5):71～73.6 HanakiK,HongZ,MatsuoT.Productionofnitrousoxidegasduringdenitrificationofwastewater.Wat.Sci.Tech.,1992,26(5/6):1027～1036.160 24