3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,,,;TN93195%,90125%92160%,(60144%);3NH4+-N98106%,95107%97161%,NH4+-N,NH4+-N,NH4+-N(81162%);Q(NO3--N),Q(NO3--N),Q(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,ScindapsusaureusandAglaonemamodestumwere93195%,90125%,92160%,respectively,allofwhichwerehigherthanthecontrol(60144%).TheremovalratesofNH4+-Nwere98106%,95107%,97161%,respectively.NH4+-NremovalbyCannaindicaandScindapsusaureuswasthroughnitrification,whileinAglaonemamodestumitwasthroughNH3volatilization.Inthecontroltreatment,NH4+-NremovalwasthroughNH3volatilization,andreached81162%.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.,2009DOI10.13198/j.res.2009.01.110.zhouxh.018,,,,[2-3].,[11-13].,,[1,11-13].,,,3,.11.1,,10d.3:¹,,1~2m,,,,30~40cm.º,,(),,;10~13e;,.»,,40~60cm,,20~28e,15e.,,.1.2/0.,,1,GB3838)2002[14],Õ.20074)5,,.66cm,50cm,38cm.43cm@43cm@5cm,10cm,4cm,.,5,43cm@4cm@5cm,..3,.46d,,Q(DO),pH,,7~8dQ(TN),Q(NH4+-N),Q(NO3--N),Q(TP)Q(CODMn);.1Table1WaterqualityofexperimentwaterbodyQP(mgPL)TNNH4+-NTPCODMnpH12100?01579100?01320168?010230100?5168913?0111.3Q(TN),Q(NH4+-N),Q(NO3--N)Q(TP)Skalar();Q(CODMn);Q(DO)YSI-55;pHHI98128pHP;.22.13,,.46d,,,,,,11cm11(a)2.11(b)2;,311(c)2,,.,,,3,,.2.22(a),3TN,.Q(TN).,Q(TN),3Q(TN)0194,11671115mgPL,90%,(P0105),60144%,3TN.1091:313Fig.1Changesofheight,rootandbiomassesofthreelandscapeplant23Fig.2RemovaleffectonNbyecologicalbadssystemsofthreelandscapeplant3NH4+-N12(b)2.0~30d,Q(NH4+-N),9114mgPL0117,01450121mgPL,98106%,95107%97161%,(73153%),[15].30~46d,Q(NH4+-N),0115~0131,0127~01450112~0122mgPL,Q(NH4+-N),302142mgPL1168mgPL.Q(NH4+-N).,3:a..pH,pH810~913,;pH715~810,;pH715,[16-17].pH710~717(2),,NH4+-N,.pH716~811,,NH4+-N;pH811~912,Q(NH4+-N);pH810~914,,NH4+-N(81162%).b..,,,pH,Q(DO),,,pH710~816,Q(DO)2mgPL[16-20];,15e[21].30d,NH4+-N,21411~24121410~2317e,pH710~717716~811,Q(DO)2133~41122100~4157mgPL,,2NH4+-N;1414~2315e,Q(DO)15d2115~4156mgPL,16~30dQ(DO)1154~1187mgPL,15d,,16~30d,,,Q(DO)2100mgPL,,NO3--NNO2--N,Q(NH4+-N),;Q(DO)2100mgPL(110222),pHpH,NH4+-N,(P0105),NH4+-N,[15].c..,[16].,,[22],(),.,3,.3NH4+-N(P0105),NH4+-N,NH4+-N,[15].2Q(DO),pHTable2ChangesofQ(DO),pH,temperatureduringtheexperimentperiodPd0~72197~41123104~41572187~41562118~31248~154112~31244157~21624156~21153124~3156Q(DO)P(mgPL)16~223124~21442162~21002115~11873156~213023~302144~21332100~21261187~11542130~215931~382133~21462126~21411154~31672159~218239~462146~11982141~21243167~31102182~21280~7712~710718~717813~912814~9118~15710~711717~716912~814911~819pH16~22711~713716~810814~811819~81023~30713~714810~718811~813810~81431~38714~717718~717813~911814~91439~46717~717717~811911~818914~9130~71411~17111410~16191414~16191417~18108~151711~20111619~19171619~19141810~2017Pe16~222011~14171917~14141914~14182017~151023~301417~24121414~23171418~23151510~231831~382412~23112317~22152315~22172318~221639~462311~24162215~24112217~24132216~24122(c),Q(NO3--N),30,Q(NO3--N)(31604145mgPL),1316716190,NH4+-N,Q(NO3--N)01210135mgPL;Q(NO3--N)15d,,15dQ(NO3--N).Q(NO3--N)[23-24].,NH4+-NNO2-NO3-,,,.,Q(DO)[0150mgPL,;Q(DO)\210mgPL,[25].,,,,Q(DO),,,,Q(DO),Q(DO),-,,,,,2Q(NO3--N)30d,30d,Q(NO3--N),,))).Q(NO3--N),NO3--N,.2.31111:33(a),3TP,,Q(TP)0121,01330125mgPL,67140%,48161%60188%,,13168%,(P0105).,[26].,,,,,Q(TP),,,,.33TPCODMnFig.3RemovaleffectonTPandCODMnbyecologicalbadssystemsofthreelandscapeplant2.4CODMn3(b),CODMn,Q(CODMn),,Q(CODMn)4126,51875107mgPL,85178%,80140%83108%,Q(CODMn)14139mgPL,(P0105),51196%.,CODMn,,Q(DO),,Q(DO)0120,0120~110110mgPL,[27].Q(DO)110mgPL,CODMn,CODMn,.3a.3,,.b.3,90%,NH4+-N95%,NH4+-N,NH4+-N,NH4+