复合沸石吸氮系统控制暴雨径流污染薛玉

ISSN1000-0054CN11-2223/N　()JTsinghuaUniv(Sci&Tech),20034362003,Vol.43,No.637/38854-857　复合沸石吸氮系统控制暴雨径流污染薛　玉1,　张　旭1,　李旭东2,　李广贺1(1.,100084;2.,100083):2002-03-26:“”(k99-05-35-02):(1974-),(),,。:(1963-),,E-mail:[e-mail]　:为控制滇池流域暴雨径流污染,研究沸石内部孔隙结构,利用沸石对氨氮的吸附作用和物化、生物作用,构建以沸石为填料的人工湿地系统。试验运行结果表明,对暴雨水中NH+4-N平均去除率85%以上,去除机理主要是沸石对NH+4-N的选择吸附作用;对NO-3-N去除主要以反硝化作用去除为主,并且碳源量制约系统去除NO-3-N能力。植物可提高系统除氮率5%左右。该系统停留时间短、能高效去除溶解性氮,对高负荷暴雨径流污染有明显的去除效果。:环境污染及其防治;复合沸石吸氮系统;冲击负荷;选择吸附:X50:A:1000-0054(2003)06-0854-04Storm-waterpollutioncontrolusingzeolitenitrogenabsorptionsystemXUEYu1,ZHANGXu1,LIXudong2,LIGuanghe1(1.DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China;2.DepartmentofWaterResourceandEnvironmentalScience,ChineseUniversityofGeosciences,Beijing100083,China)Abstract:Azeolitesystemwasbuiltandoperatedin-situtoreducenitrogenlevelsinstorm-waterrunoffintheDianchiwatershed.Theinternalzeolitestructurewasmeasuredwithanelectronmicroscope.Thezeolitewasusedasfillingthatcouldquicklyandefficientlyremovesolublenitrogen.Thehighefficiencywasduenotonlytotheselectivezeoliteabsorption,butalsotophysicalchemicalandbiologicalpurificationinthesystem.Theresultsshowedthatthesystemcouldquicklyremoveammonia-nitrogenwithanaverageremovalrateofabout85%throughtheselectiveabsorptionofthezeolite.Thenitrate-nitrogenremovalwasmainlyduetodenitrificationbymicroorganisms.Theorganiccarboncontentstronglyaffectedthesystemnitrate-nitrogenremovalefficiency.Plantscouldalsoduectlyadsorbthenitrate-nitrogenwhichcouldincreasetheremovalratebyabout5%.Keywords:environmentalprotection;zeolitenitrogenabsorptionsystem;shakeloading;selectiveabsorption,。,,、7.5mgL-10.19mgL-1;,、1.5mgL-10.14mgL-1[1],、、,。,“、”。,,、。、,——、[2～4]。,、。,、、,,,,。1　填料的选择,。DOI:10.16511/j.cnki.qhdxxb.2003.06.03750%,,。,,。(400～800m2g-1),,[5,6]。1。,,、,5μm,。0.42nmNH+4-N。NH+4-N,。。1　2　复合沸石生态中试系统2.1　,2。:6m×1m×0.6m,4。2cm(),20cm。——。,。2　2.2　、。3(tRT):19.2、9.6、4.8h,;。1(tRT)。1　tRT/hⅠ9.6Ⅱ19.2Ⅲ19.2Ⅳ9.6Ⅴ4.8　　COD(,)80mgL-1,20mgL-1。、,。,COD,20mgL-1,1.0。5.0,,。855　,:　3　结果及分析3.1　、3,20～40mgL-1,20%,,NH+4-N50%。,、NO-3-N、NH+4-N30、16、10mgL-1,。(Z)2,3。,NH+4-N,85%。NO-3-N,COD20mgL-1,NO-3-N5%;,5COD80mgL-1,,,9.6h50%。2　100×ZNO-3-NTNNH+4-NⅠ32893Ⅱ33095Ⅲ415083Ⅳ415184Ⅴ1820813　100×ZNO-3-NTNNH+4-NⅠ23192Ⅱ33094Ⅲ455282Ⅳ465182Ⅴ2023803.2　1)、、、。NH+4-N,NH+4-NNO-2-NNO-3-N,,。、,。NH+4-NNO-3-N,NH+4-N。,NH+4-N,、,pH,NH+4-NNH+4-N,。,,。2)3。,,5%。,,,、。3　NO-3-N4(DO),DO,0.5mgL-1;,DO0.5mgL-1,。,、;4　(DO)856()2003,43(6)NO-3-N,NO-3-N。3),N2N2O,,。5NO-2-N。NO-2-N。,NO-2-N,NO-3-NNO-2-N。NO-3-N8mgL-1,1mgL-1NO-2-N,40%NO-3-N。5　NO-2-NNO-3-N。NO-3-N,,。4　结　论。NH+4-N,85%,NH+4-NNH+4-N。NO-3-N,。,,。NO-3-N,5%。　(References)[1],.[J].,1999,1(12):4344.\=GUOHuiguang,YANZishen.Reflectiononeutrophicationandnon-pointsourcecontrolinDianchiLake[J].ResearchofEnvirSci,1999,1(12):4344.(inChinese)[2],.[J].,2000,1:109112.GUOHuiguang,MAPeijing.TheframeofintegratedenvironmentaltreatmentanditsestimatedinvestmentinDianchiLake[J].YunnanEnvirSci,2000,1:109112.(inChinese)[3].——[J].,1993,14(2):3337.ZHUHuichang.Newprocessofwastewatertreatment—designofconstructedwetland[J].EnvirSci,1993,14(2):3337.(inChinese)[4].[J].,1991,12(2):8386.WUXiaolei.Mechanismofwastewatertreatmentinconstructedwetlands[J].EnvirSci,1991,12(2):8386.(inChinese)[5]AmesL.Zeoliticremovalofammoniumionsfromagriculturalwastewaters[A].Proc.13thPacificNorthwestIndustryWasteConference[C].Washington:WashingtonStateUniversity,1967.[6]HaralambousA,MaliouE,MalamisM.Useofzeoliteforammoniumuptake[J].WaterSciandTech,1992,25(1):139145.[7]MercerB.Ammoniaremovalfromsecondaryeffluentsbyselectiveionexchange[J].WaterPollutionControl,1970,42(1):95107.857　,: