低负荷人工湿地对城市生活污水处理效果的研究

283()Vol.28No.320079JournalofYangzhouUniversity(AgriculturalandLifeScienceEdition)Sep.2007冯明雷2,张志勇1,杨林章1*,孔荔玺1(1.,210008;2.,100039):,(,CODCr)(TN)(TP)(NH+4-N)(NO-x-N),:,CODCrTNTPNH+4-NNO-x-N75.6%93.2%95.7%96.2%66.5%;65.7%CODCr87.2%TN95.0%TP1d,;5dNO-x-N,CODCrTNTPNH+4-N:;;;;:X703.1:A:1671-4652(2007)03-0072-05EffectofconstructedwetlandontreatmentofmunicipalsewageatlowerloadingratesFENGMing-lei1,2,ZHANGZhi-yong1,YANGLin-zhang1,KONGLi-xi1(1.InstofSoilSci,CAS,Nanjing210008,China;2.UnivofGra,CAS,Beijing100039,China)ABSTRACT:Performanceanddynamicremovaloftypicalpollutantsinmunicipalsewagetreatedby3simulatingconstructedwetlandcellsatlowerloadingrateswereobserved,andtheimpactofpollutantloadingrateforpollutantsremovalwasalsoinvestigated.Theresultsindicatedthattheconstructedwetlandplantedwithryegrass(LoliummultiflorumL.)hadgoodperformancesfortreatmentofmunicipalsewage.TheremovalefficienciesofCODCr,TN(totalnitrogen),TP(totalphosphorus),NH+4-NandNO-x-Nwere75.6%,93.2%,95.7%,96.2%and66.5%,respectively.MostofCODCr(65.7%),TN(87.2%)andTP(95.0%)weredegradedwithinonedayaftersewageaffused,andadsorptionandimmobilityofstuffingmaybeanimportantpreconditionforpollutantsrapidremoval.WhereastheremovalofNO-x-Naccumulatedbymicrobialnitrificationneededlongerthan5daysresidenttime.TheremovalloadingratesofCODCr,TN,TPandNH+4-Nwerepositivelycorrelatedwiththeirpollutantloadingrates.Thepollutantloadingrateshadgreatinfluenceontheremovaloftypicalpollutantsinmunicipalsewage.KEYWORDS:constructedwetland;municipalsewage;ryegrass;pollutantloadingrate;removalloadingrate20,,[1-3],[1],,,[4],[5-6],:2007-01-10:(863-2002AA601012):(1982-),,,,*,E-mail:[e-mail][7-8],[5,7,9-10],(,CODCr),,11.11Fig.1Thesketchmapofthesimulatingconstructedwetlandcell,564635cm,(22cm)34cm,(8cm),33%,30L12006430625,3,48m-2,,36d,11,1520L,,6d,0.01md-1,1.2,100L,11Tab.1ThemainpropertiesofthewastewaterintheexperimentpH/(DO)/mgL-1CODCr/mgL-1(TN)/mgL-1(TP)/mgL-1(NH+4-N)/mgL-1(NO-x-N)/mgL-17.477.7017.037.001.853.8119.721.6030.920.762.1014.9325.910.863.131.39:00,1,7,246,CODCrTNTPNH+4-NNO-x-N(NO-2-NNO-3-N),pHDO,TNTPNH+4-NNO-x-NSkalarSA-4000;CODCr,DO[11],pHPHS-3CpH22.11)CODCrTNTPNH+4-N:8,TNTPNH+4-N733:,85%CODCr75.6%,,91.3%,52.2%;2,CODCr53.8mgL-1,84.5mgL-1,CODCr,20.6mgL-1,TP,92.9%99.4%,TP0.06mgL-1TNNH+4-N,93.2%96.2%,,TNNH+4-N1.770.88mgL-12,1,CODCrTNTPNH+4-N2,1d1d,CODCr60%,470%TN1d87.2%,5d6%TPNH+4-N,1d95.0%90.1%2)DOpH:DO0.68mgL-1,6d,DO,2.23mgL-1,2.80mgL-1,pH7.60,7.45,pH,3)NO-x-N:2,NO-x-N265.8%;46NO-x-N,58.3%54.2%NH+4-N21.061.34mgL-1,NO-x-N0.140.21mgL-1,NO-x-N;7NO-x-N66.5%,TNNH+4-N,NO-x-N0.61mgL-1,1d,DO,CODCr,,NO-x-N46,NH+4-NNO-x-NNO-x-N,6;7NH+4-NNO-x-N2CODCrTNTPNH+4-NTab.2ThechangesofCODCr,TN,TPandNH+4-Nwithinatestingperiod1*2467CODCr/mgL-184.519.9b29.06.823.35.1-20.66.4/%-65.772.4-75.6TN/mgL-126.042.943.331.062.290.922.090.731.770.86/%-87.291.292.093.2TP/mgL-11.580.390.080.030.080.050.080.050.060.04/%-95.094.894.195.7NH+4-N/mgL-123.063.582.291.171.230.760.950.730.880.65/%-90.194.795.996.2NO-x-N/mgL-11.810.720.620.390.760.370.830.340.610.47/%-65.858.354.266.5*12.2,[7],,22,,CODCrTNTPNH+4-NCODCr,CODCr74()282Fig.2Therelationshipofremovalrateandpollutantloadingrateoftypicalpollutants11002100mgm-2TN,CODCrTN,NH+4-NTP,23.20mg(m2d)-1,CODCr,3,,CODCrTNTPNH+4-NNO-x-N,75.6%93.2%95.7%96.2%66.5%1d,65.7%CODCr87.2%TN95.0%TP;CODCr[1],[12],,,CODCr,,,[13],NO-x-N,,NO-x-N,,DOpHDOpH[2,13],TPNO-x-N,1,DO,NH+4-N,NO-x-NCODCr753:,,,:[1],.[J].,2004,5(6):71-75.[2],,.[J].,2005,18(6):68-71.[3],,,.[J].,2006,19(4):47-50.[4],,.[J].,2001,21(7):1136-1141.[5]RanN,AgamiM,OronG.Apilotstudyofconstructedwetlandsusingduckweed(LemnagibbaL.)fortreatmentofdomesticprimaryeffluentinIsrael[J].WaterResearch,2004,38(9):2241-2248.[6],,,.[J].,2006,27(2):253-256.[7],,,.[J].,2006,26(3):404-408.[8],,,.4[J].,2005,24():94-98.[9],,,.[J].,2004,24(3):275-279.[10]ReillyJ,HorneAJ,MillerCD.Nitrateremovalfromadrinkingwatersupplywithlargefree-surfaceconstructedwetlandspriortogroundwaterrecharge[J].EcologicalEngineering,2000,14:33-47.[11].[M].4.:,2002:200-285.[12]AndreaSB,MelissaNR,LarryDG,etal.Phosphorusremovalbywollastonite:Aconstructedwetlandsubstrate[J].EcologicalEngineering,2001,15:121-132.[13].[J].,1995,16(3):83-86.(上接第67面):[1].[M].:,1994.[2],,,.[J].,2002,39(5):290-292.[3]HuangS,YunSH,QuailK,etal.EstablishmentofflourqualityguidelinesforNorthern-styleChinesesteamedbread[J].JournalofCerealScience,1996,24(2):179-185[4],,,.[J].,2005,20(2):16-20[5],,,.[J].,2000,15(3):126-131.[6],.[M].:,2001.[7].[M].:,2002.[8].[M].:,1999.[9].SB/T10139-93:[S].1993.[10],,,.[J].,2000,15(2):10-15.[11]ZhuJ,HuangS,KhanK,etal.Relationshipofproteinquality,qualityanddoughpropertieswithChinesesteamedbreadquality[J].JournalofCerealScience,2001,33(2):205-212.[12],,,.[J].,2002,28(2):240-244.76()28