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当前位置:首页 > 商业/管理/HR > 信息化管理 > 二级串联人工湿地处理农村污水的脱氮除磷研究帖靖玺
帖靖玺, 钟 云, 郑 正, 罗兴章, 王 勇, 于 鑫, 王艳锦(南京大学污染控制与资源化研究国家重点实验室,江苏南京210093) : 采用二级串联潜流式人工湿地系统对太湖地区农村生活污水进行了脱氮除磷的试验研究。结果表明,在夏季,当进水容积负荷为400L/d时,人工湿地系统对NH+4-N、TN和TP的去除率分别为83%、80%和83%,相应的污染物削减量分别为4772、5463和524mg/d;在冬季,当进水容积负荷为240L/d时,人工湿地系统对NH+4-N、TN和TP的去除率分别为90%、90%和94%,相应的污染物削减量分别为7751、8893和732mg/d;降低进水容积负荷可延长系统的水力停留时间,有利于保持人工湿地系统的除污效率;二级湿地采用粒径较小的填料有助于维持系统对NH+4-N、TN和TP去除效果的稳定性,该工艺可有效去除太湖流域农村生活污水中的氮、磷污染物。 : 农村生活污水; 二级串联潜流式人工湿地; 脱氮除磷:X703.1 :C :1000-4602(2007)01-0088-05 :(863)(2002AA601012-1B)StudyonNitrogenandPhosphorusRemovalfromRuralDomesticWastewaterbyTwo-stageConstructedWetlandProcessTIEJing-xi, ZHONGYun, ZHENGZheng, LUOXing-zhang, WANGYong, YUXin, WANGYan-jin(StateKeyLaboratoryofPollutionControlResourceReuse,NanjingUniversity,Nanjing210093,China) Abstract: ExperimentsofnitrogenandphosphorusremovalfromruraldomesticwastewaterintheTaihuLakebasinwerecarriedoutbythetwo-stagesubsurfaceflowconstructedwetlandprocess.There-sultsshowthatinsummerwhentheinfluentvolumeloadingis400L/d,theremovalsofNH+4-N,TNandTPare83%,80%and83%respectively.Thecorrespondingmassofthepollutantsremovedare4772mg/d,5463mg/dand524mg/d,respectively.Inwinterwhilethevolumeloadingis240L/d,thecorrespondingremovalsare90%,90%and94%respectively,andthecorrespondingmassofpollu-tantsremovedare7751mg/d,8893mg/dand732mg/d.TheresultssuggestthatHRTisthekeyfac-torinfluencingtheremovaleffectsofnitrogenandphosphorus,andtolowertheinfluentvolumeloadingcanprolongHRTandhelpkeeptheremovalefficiencyoftheprocess.Usingthefinermediainthesec-ondarywetlandishelpfultomaintainstableremovalsofNH+4-N,TNandTP.Theprocesscaneffective-lyremovenitrogenandphosphorusfromruraldomesticwastewaterintheTaihuLakebasin. Keywords: ruraldomesticwastewater; two-stagesubsurfaceflowconstructedwetland; nitro-genandphosphorusremoval88第23卷 第1期2007年1月 中国给水排水CHINAWATERWASTEWATER Vo.l23No.1Jan.2007 [1~4],[5],。、、、,、,[6、7]。、3,、,,[8]。,,[9、10],,。1 试验部分1.1 。(L×W×H)490cm×142cm×80cm,1%,。,,,d1~4cm;,,,d1cm;(L×W×H)50cm×142cm×80cm。。1。1 Fig.1 Flowchartoftheexperimentalprocess1.2 2004420cm,、,,7。2004726,,1。1 、Tab.1 NitrogenandphosphorusconcentrationintheruraldomesticwastewatermgL-1NH+4-NNO-3-NTNTP6~440~0.58~551~4 ,726—827,400L/d,0.5~1/d;827—1025;1025—1211,,,240L/d,1~2/。1.3 NH+4-N、NO-3-N、TNTP,Skalar。2 结果与讨论2.1 NH+4-NNH+4-N,,NH+4-N。NH+4-N2。2 、NH+4-NFig.2 VariationofNH+4-Nconcentrationsininfluentandeffluent89帖靖玺,等:二级串联人工湿地处理农村污水的脱氮除磷研究第23卷 第1期2:,NH+4-N6~23mg/L,NH+4-N30%75%,NH+4-N83%,1772、3000、4772mg/d;,NH+4-N20~44mg/L,NH+4-N49%81%,NH+4-N90%,NH+4-N4184、35677751mg/d。2.2 TN、TN3。3 、TNFig.3 VariationofTNconcentrationininfluentandeffluent3,TN9~27mg/L,,TN32%,TN70%,TN80%;TN2210、3253mg/d,5463mg/d。,TN22~55mg/L,TN52%,TN78%,TN90%;TN5155、3738mg/d,8893mg/d。2,TNNH+4-N,,。TN,,,,[11~13],TN,TNNH+4-N。、,NH+4-N5759mg/d8572mg/d,TN6830mg/d9929mg/d,NH+4-NTN,NH+4-NTN,,,,。,HRT。2.3 NO-3-N、NO-3-N4。4 、NO-3-NFig.4 VariationofNO-3-Nconcentrationsininfluentandeffluent4,,NO-3-N,NO-3-N0.1、0.4mg/L,90第23卷 第1期 中国给水排水 、0.7mg/L。,NO-3-N,NO-3-N1mg/L,NO-3-N。2.4 TPTP、,。,,,5。5 、TPFig.5 VariationofTPconcentrationsininfluentandeffluent5,,TP1~2.5mg/L,TP0.4~1.2、0.2~0.4mg/L,42%71%,83%,264、260mg/d,524mg/d;,TP2~4mg/L,TP0.5~1.8、0.2~0.3mg/L,67%、81%,94%,522、210732mg/d。,631mg/d,783mg/d,,HRT,,,,HRTNH+4-NTN。3 结论① ,、,。② ,400L/d,NH+4-N、TNTP83%、80%83%,4772、5463524mg/d;,240L/d,NH+4-N、TNTP90%、90%94%,7751、8893732mg/d。。③ NH+4-N、TNTP、,NH+4-N、TNTP,。:[1] ,,.[J].,1998,1:23-26.[2] ,,,.[J].,2001,17(1):44-47.[3] .[J].,2003,23(3):10-13.[4] ,,,.[J].,2002,24(1):50-53.[5] ,,,.[J].,2003,29(4):16-17,22.[6] .[J].,2003,25(3):24-26.(下转第96页)91帖靖玺,等:二级串联人工湿地处理农村污水的脱氮除磷研究第23卷 第1期2h,PACPAM100mg/L1mg/L。5,COD、TP;50,。6 结论① COD、、TP20%、49%、56%,SS123mg/L,。② A/OBOD5,,33h。19%,。③ ,。,COD4.9%,2h、PACPAM100mg/L1mg/L,COD40%。④ “+A/O++”、,COD、TP85%、91%95%。:[1] ,.[J].(),2003,31(10):1229-1231.[2]CamillaGrunditz,GunnelDalhammar.Developmentofni-trificationinhibitionassaysusingpureculturesofnitro-somonasandnitrobacter[J].WaterRes,200l,35(2):433-440.[3] ,,,.[J].,2003,29(5):52-55.:(021)65980354E-mail:lsldwz@yahoo.com.cn:2006-08-09(上接第91页)[7] ,.[J].,1998,17(5):232-234.[8] KadlecRH,KnightRL.TreatmentWetlands[M].NewYork:CRCPressLLCPublishers,1996.[9] ,,.[J].,2003,22(3):74-78.[10] ,,.[J].,2002,13(2):224-228.[11] SikoraFJ,ZhuT,BehrendsLL,etal.Ammoniumre-movalinconstructedwetlandwithrecirculatingsubsur-faceflow:removalsrateandmechanisms[J].WaterSciTechnol,1995,32(3):193-202.[12] VlastaOttová,JarmilaBalcarová,JanVymaza.lMicrobi-alcharacteristicsofconstructedwetlands[J].WaterSciTechnol,1997,35(5):117-123.[13]KevinDWhite.Enhancementofnitrogenremovalinsubsurfaceflowconstructedwetlandsemployinga2-stageconfiguration,anunsaturatedzone,andrecircula-tion[J].WaterSciTechnol,1995,32(3):59-67.:13770600371E-mail:tjx008@163.com:2006-08-0496第23卷 第1期 中国给水排水
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