多孔混凝土水质净化性能

37320075()JOURNALOFSOUTHEASTUNIVERSITY(NaturalScienceEdition)Vol137No13May20071,312(1,211189)(2,210096)(3,210008):,5.(DO).(TP)(TN).:,;1020mm25%.:;;;;TP;TN:TU528;X52:A:1001-0505(2007)0320504204Water2purificationpropertiesofporousconcreteXuGuodong1,3GaoJianming1LXiwu2(1SchoolofMaterialsScienceandEngineering,SoutheastUniversity,Nanjing211189,China)(2SchoolofEnergyandEnvironment,SoutheastUniversity,Nanjing210096,China)(3JiangsuTestingCenterforQualityofConstructionEngineering,Nanjing210008,China)Abstract:Theresultsofexperimentonwaterpurificationpropertiesofporousconcretearereported.Fivesizesofcoarseaggregateandvoidratioswereadopted.Anequipmentforwaterpurificationex2perimentwasdesigned.Inthewaterpurificationexperiment,theamountoforganismsattachedontheporousconcretesurfaceisindirectlyexaminedbytheconsumptionofthedissolvedoxygen(DO).Waterpurificationoftheporousconcreteisevaluatedbytheremovalamountofthetotalphosphorus(TP)andtotalnitrogen(TN).Aporousconcretewithaggregatesizeof10to20mmandvoidratioof25%providessuperiorabilityofwaterpurification.Resultsfromthisstudyshowthatporousconcreteisabletopurifywaterefficiently.Keywords:porousconcrete;bio2film;water2purification;voidratio;totalphosphorus;totalnitrogen:2006211230.:(2003AA60110023).:(1981),,;(),,,,,[e-mail].,,[1-4].(porousconcrete,POC),,,,.,,,[5-7].,,.,,,.1(1),6,14d5(100mm100mm100mm)(1),.200mL/min.12h,5000lx.(252)[8].(2),.1POC()(:cm)1/mm/%/%A20A25B20B25B305105101020102010202025202530282mg/L(TP)(TN)014226172211pH.,..,,Ca2+,OH-,.pH2.,pH11,pH,20d9,.,,Ca2+,OH-,.,pH.2pH212DO3..[1].,,,.DO20d,30d:C,N,P,,,,,.3DO2.3TP4TP.TP20d,30d.POC(A20)20dTP01082mg/L(7915%);POC(A25)20d5053,:TP01026mg/L(9315%).POC(B20)20dTP01056mg/L(86%);POC(B25)20dTP01017mg/L(9518%),;POC(B30)20dTP0102mg/L(95%).30dTP:,,[5].C,N,P,,,,TP.TP5.4TP520dTP5,,TP,25%TP.:[9];25%,,,,TP.,1020mm,TP510mm,.,.TP.214TN6TN.TN20d,30d.POC(A20)20dTN1145mg/L(3215%);POC(A25)20dTN1.19mg/L(4015%).POC(B30)20dTN1105mg/L(4715%);POC(B25)20dTN0188mg/L(56%),;POC(B20)30dTN(0198mg/L,51%).30dTN,:;[5].,,.B25(1020mm25%).6TN31),Ca2+,OH-,.2),.605()37.3).,TPTN.(References)[1],.½yə“ӏÊy¨[J].“ӏÊy¨,1997,19(1):1045-1050.[2],,,.[J].,2005,24(4):47-49.JiangBin,LXiwu,WuJinming,etal.Applicationofeco2concretedykeprotectiontobio2remediationengi2neeringinwatersourceconservation[J].WaterPurifi2cationTechnology,2005,24(4):47-49.(inChinese)[3],.½yə“ӏÊy¨[J].“ӏÊy¨,2000,22(2):1219-1224.[4]ParkSung2Bum,TiaMang.Anexperimentalstudyonthewater2purificationpropertiesofporousconcrete[J].CementandConcreteResearch,2004,34:177-184.[5],.[J].,2003,3(4):371-373.ChenZhishan,LiuXuanju.Mechanismandapplicationofeco2concreteusingforpurification[J].ScienceTech2nologyandEngineering,2003,3(4):371-373.(inChinese)[6],,,.½yə“ӏÊy¨[J].“ӏÊy¨,2001,22(2):187-192.[7].“ӏʨ[J].›ÁÓ¨“ӏÊy¨,1992(46):880-885.[8],,,.[J].,2006():68-70.XuGuodong,GaoJianming,LXiwu,etal.Anex2perimentalmethodstudyonthewater2purificationprop2ertiesofporousconcrete[J].ChinaConcreteandCe2mentProducts,2006(sup):68-70.(inChinese)[9],,,.NP[J].,2006,26(2):317-325.LiYeguang,LiZhongkui,GengYahong,etal.EffectofN,Pconcentrationongrowthrateandbiomassofphytoplanktonineutrophicalwater[J].ActaEcologicaSinica,2006,26(2):317-325.(inChinese)7053,: