143种景观植物对城市河道污染水体的净化效果周晓红

3周晓红,王国祥*,冯冰冰,葛绪广,,210046:3,,3,46d.:3,,,;TN9395%,9025%9260%,(6044%);3NH4+-N9806%,9507%9761%,NH4+-N,NH4+-N,NH4+-N(8162%);(NO3--N),(NO3--N),(NO3--N);3TPCODMn,.,3,.:;;;;;;:X524:A:1001-6929(2009)01-0108-06PurificationEffectofNitrogenandPhosphorusinPollutedWaterofUrbanRiversbyThreeLandscapePlantsZHOUXiao-hong,WANGGuo-xiang,FENGBing-bing,GEXu-guangJiangsuKeyLaboratoryofEnvironmentalChangeandEcologicalConstruction,CollegeofGeographicalScience,NanjingNormalUniversity,Nanjing210046,ChinaAbstract:ThreekindsofecologicalfloatingbedsweremadeofCannaindica,AglaonemamodestumandScindapsusaureus,respectively,tostudytheireffectsonremovingnitrogenandphosphorusfromwastewater.Theexperimentlasted46days.Theresultsindicatedthatthreelandscapeplantswereadaptabletogrowintheurbanriver,andtheirbiomass,heightandrootsignificantlyincreasedattheendofexperiment.TheincreasingratewasCannaindicaAglaonemamodestumScindapsusaureus.TheremovalratesofNbyCannaindica,ScindapsusaureusandAglaonemamodestumwere9395%,9025%,9260%,respectively,allofwhichwerehigherthanthecontrol(6044%).TheremovalratesofNH4+-Nwere9806%,9507%,9761%,respectively.NH4+-NremovalbyCannaindicaandScindapsusaureuswasthroughnitrification,whileinAglaonemamodestumitwasthroughNH3volatilization.Inthecontroltreatment,NH4+-NremovalwasthroughNH3volatilization,andreached8162%.NO3--NconcentrationhadthetendencyfirsttoincreaseandlatertodecreaseintheCannaindicaandScindapsusaureustreatments,butwasslightlydifferentintheAglaonemamodestumandcontroltreatments.Thisrelatedtothenitrification,denitrificationandplantadsorption.ThreeplantshadgoodremovaleffectsonthetotalphosphorusandCODMn,whichwerehigherthanthecontroltreatment.Basedontheirgoodeffectsonnitrogenandphosphorusremoval,threelandscapeplantsarerecommendedasspeciesofaquaticvegetationinphytoremediationofwastewaterofurbanriver.Keywords:landscapeplant;pollutedwater;nitrogen;phosphorus;purification;ecologicalbeds;urbanriver:2008-03-04:2008-04-24:(705824);(BM2002701):(1981-),,,,[e-mail].*,(1963-),,,,,,,[e-mail],[1-3].,.,[4-10],22120091ResearchofEnvironmentalSciencesVol.22,No.1Jan.,2009,,,,[2-3].,[11-13].,,[1,11-13].,,,3,.11.1,,10d.3:,,1~2m,,,,30~40cm.,,(),,;10~13;,.,,40~60cm,,20~28,15.,,.1.2.,,1,GB38382002[14],.200745,,.66cm,50cm,38cm.43cm43cm5cm,10cm,4cm,.,5,43cm4cm5cm,..3,.46d,,(DO),pH,,7~8d(TN),(NH4+-N),(NO3--N),(TP)(CODMn);.1Table1Waterqualityofexperimentwaterbody(mgL)TNNH4+-NTPCODMnpH1200057900032068002300056893011.3(TN),(NH4+-N),(NO3--N)(TP)Skalar();(CODMn);(DO)YSI-55;pHHI98128pH;.22.13,,.46d,,,,,,11cm1(a).1(b);,31(c),,.,,,3,,.2.22(a),3TN,.(TN).,(TN),3(TN)094,167115mgL,90%,(P005),6044%,3TN.1091:313Fig.1Changesofheight,rootandbiomassesofthreelandscapeplant23Fig.2RemovaleffectonNbyecologicalbadssystemsofthreelandscapeplant3NH4+-N2(b).0~30d,(NH4+-N),914mgL017,045021mgL,9806%,9507%9761%,(7353%),[15].30~46d,(NH4+-N),015~031,027~045012~022mgL,(NH4+-N),30242mgL168mgL.(NH4+-N).,3:a..pH,pH80~93,;pH75~80,;pH75,[16-17].pH70~77(2),,NH4+-N,.pH76~81,,NH4+-N;pH81~92,(NH4+-N);pH80~94,,NH4+-N(8162%).b..,,,pH,(DO),,,pH70~86,(DO)2mgL[16-20];,15[21].30d,NH4+-N,2141~242140~237,pH70~7776~81,(DO)233~412200~457mgL,,2NH4+-N;144~235,(DO)15d215~456mgL,16~30d(DO)154~187mgL,15d,,16~30d,,,(DO)200mgL,,NO3--NNO2--N,(NH4+-N),;(DO)200mgL(110222),pHpH,NH4+-N,(P005),NH4+-N,[15].c..,[16].,,[22],(),.,3,.3NH4+-N(P005),NH4+-N,NH4+-N,[15].2(DO),pHTable2Changesof(DO),pH,temperatureduringtheexperimentperiodd0~7297~412304~457287~456218~3248~15412~324457~262456~215324~356(DO)(mgL)16~22324~244262~200215~187356~23023~30244~233200~226187~154230~25931~38233~246226~241154~367259~28239~46246~198241~224367~310282~2280~772~7078~7783~9284~918~1570~7177~7692~8491~89pH16~2271~7376~8084~8189~8023~3073~7480~7881~8380~8431~3874~7778~7783~9184~9439~4677~7777~8191~8894~930~7141~171140~169144~169147~1808~15171~201169~197169~194180~20716~22201~147197~144194~148207~15023~30147~242144~237148~235150~23831~38242~231237~225235~227238~22639~46231~246225~241227~243226~2422(c),(NO3--N),30,(NO3--N)(360445mgL),13671690,NH4+-N,(NO3--N)021035mgL;(NO3--N)15d,,15d(NO3--N).(NO3--N)[23-24].,NH4+-NNO2-NO3-,,,.,(DO)050mgL,;(DO)20mgL,[25].,,,,(DO),,,,(DO),(DO),-,,,,,2(NO3--N)30d,30d,(NO3--N),,.(NO3--N),NO3--N,.2.31111:33(a),3TP,,(TP)021,033025mgL,6740%,4861%6088%,,1368%,(P005).,[26].,,,,,(TP),,,,.33TPCODMnFig.3RemovaleffectonTPandCODMnbyecologicalbadssystemsofthreelandscapeplant2.4CODMn3(b),CODMn,(CODMn),,(CODMn)426,587507mgL,8578%,8040%8308%,(CODMn)1439mgL,(P005),5196%.,CODMn,,(DO),,(DO)020,020~1010mgL,[27].(DO)10mgL,CODMn,CODMn,.3a.3,,.b.3,90%,NH4+-N95%,NH4+-N,NH4+-N,NH4+-N;3(NO3--N).c.3,TP6740%,4861%6088%,;CODMn.d.3,,,.(References):[1],,,.[J].,2007,21(5):128-133.[2]LIWW,FRIEDRICHR.Insituremovalofdissolvedphosphorusinirrigationdrainagewaterbyplantedfloats:preliminaryresultsfromgrowthchambertrial[J].AgricEcosystEnviron,2002,90(1):9-15.[3],,,.[J].,2007,19(4):367-372.[4]GERKES,BAKERLA,XUY.Nitrogentransformationsinawetlandreceivinglagooneffluent:sequentialmodelandimplicationsforwaterreuse