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4 12环境工程学报Vol.4,No.12201012ChineseJournalofEnvironmentalEngineeringDec.2010徐德福 李映雪(,210044) 4,(TOC)。TOC27mg/L,4,:---,,。3TOC:-,,,TOC。12,--TOC,。TOC。 X506 A 1673-9108(2010)12-2740-05PreliminaryinvestigationoneffectofdifferentconstructedwetlandsubstratesoncapacityofremovalofTOCinwastewaterXuDefu LiYingxue(CollegeofEnvironmentalScienceandEngineering,NanjingUniversityofInformationScienceTechnology,Nanjing210044,China)Abstract TheeffectofquantityandcomponentsofcarboninsubstratesontheremovalrateofTOCinwastewaterwasinvestigatedbyfoursubstratesorratiotodifferentsubstrates.Resultsshowedthatcarbonwasre-leasedfromfoursubstrates,andthequantityofthereleasedcarbonwasdifferentfollowingtheorderofmixtureofsand,soilandpeatsoilmixtureofsoilandsandsand,whenconcentrationoftotalorganiccarbon(TOC)inwastewaterwas27mg/L.Themoreofcarbonwasreleasedfromsubstratesduetothehigherconcen-trationofcarboninsubstrates.TheremovalrateofTOCforthreesubstratescouldbesummarizedasfollowing:soilmixtureofsoilandsandsand.ThesubstrateswithhigherremovalrateofTOCresultedfromthehighermicrobialactivitywhichwasrelatedtothehigherconcentrationofcarboninsubstrates.However,TOCconcen-trationinwastewaterfrommixtureofsand,soilandpeatat12dwasincreasedduetorelativelyhigherconcentra-tionofthestabilizationcombinationorganiccarboninpeat.ThecapacityofremovalofTOCwasinfluencedbyconcentrationandcompositionofcarboninsubstrates,andthehighermicrobialactivitywasrelatedtothehigherconcentrationoftheeasilydecomposedorganiccarbon,whichresultedinthehigherremovalrateofTOC.Keywords constructedwetland;substrate;totalorganiccarbon;purification:(40901257);:2009-10-22;:2010-01-07:(1975～),,,,:。E-mail:defuxu1@163.com 、、,[1-2]。、(、),,。,。,、、pH[3-4]。,,、、12:、,。,。,,,;,,,。,,。,,,。,、,,,。1 1.1 、。,pH5.51,、11.40、1.5412.5g/kg,、24.5%、65.0%10.5%。SiO2,、、6.34、56.3、1.341.26g/kg。454g/kg。(Typhasp.);(TOC27mg/L)。1.2 ,。4:(1)(Ⅰ);(2)(Ⅱ);(3)50%50%(Ⅲ);(4)47.5%、47.5%5%(Ⅳ)。5kg,1.5g、2g1.5g,15L,(2),。3～4cm,21。3。,,,,(、、),。1.3 20g()500mL,200mL(20℃),(CK),,,3。,3、612(TOC)。1.4 [5];,,[6]、[7][8]。TOC(ShimmaZuTOC-500)。2 2.1 TOC,TOC(1)。,36,Ⅰ、ⅡⅢTOC,12,3TOCCK。ⅣTOC3,6,TOC3,12,TOC6。TOC。1 TOCFig.1 ChangeofTOCconcentrationwithtimeTOC,3,TOC:ⅣⅡⅢⅠ,ⅣTOC(p0.05),4TOCCK(1)。274144,4TOCCK,TOC,,TOC,,4:ⅣⅡⅢⅠ。6,ⅣTOC(p0.05)ⅢⅠ,ⅡTOC(p0.05)Ⅰ,ⅣⅡTOC(1)。12,ⅣTOC(p0.01)3CK,Ⅰ、ⅡⅢTOCCK,3TOC:ⅡⅢⅠ。,TOC。2.2 4(、、)1,1,,Ⅳ、、,Ⅱ,Ⅰ。1,3,ⅣTOC,Ⅱ,Ⅰ,Ⅳ,Ⅱ,Ⅰ。,,,。1 Table1 Microbialactivityofdifferentsubstrates(mg/kg)(mg/kg)(mg/(kg·d))(mg/(g·d))Ⅰ39.095.42124.330.084Ⅱ175.3622.22165.170.148Ⅲ155.5718.99145.450.093Ⅳ391.1243.74186.730.201 :。2.3 TOC12,ⅣTOCCK,3TOCCK。12,Ⅱ、ⅢⅠTOC,3TOC(2),ⅡTOC2 TOCFig.2 TOCremovalrateofdifferentsubstrates,Ⅲ,Ⅰ,ⅡTOCⅠⅢ1.71.3。12,ⅡⅢⅠ,TOCⅢⅠ,3TOC,,TOC。3 3.1 3,4TOCCK,4。,[9-11]。SiO2、[12],1TOCCK(),,,。ⅢⅡ;Ⅳ,,。,43:(1);(2);(3)。SiO2,Ca、Fe、MgAl,11.4g/kg454g/kg,4:ⅣⅡⅢⅠ。Ⅳ,,Ⅰ,,4:ⅣⅡⅢⅠ。,,,,。274212:3.2 3～12,Ⅰ、ⅡⅢTOC,ⅣTOC6,12(1),。(、)(,,、),,,[13-14]。,ⅣTOC。Benner[15],,,。Stout[13]()63%～96%,,。,,,。3,Ⅳ、(),,6,ⅣTOC,12,,TOC。Ⅱ、ⅢⅠ,,3～12,3TOC。,。,,TOC,,TOC。,,();(),,。[16][17],。3.3 TOC3TOC:ⅡⅢⅠ(2)。12,Ⅱ,TOC,Ⅰ,TOC。、、TOC,0.93、0.95、10.92,TOC,TOC。13TOC,Ⅱ,Ⅲ,Ⅰ,,TOC,,,TOC。,。,,。,,,。,。4 (1)4:---,,;。(2),,TOC,3TOC:-。(3),(),;,。[1],,,..,2008,31(7):112-11527434[2],.、.,2007,5(1):32-37[3]TannerC.C.,SukiasJ.P.S.,UpsdellM.P.Organicmatteraccumulationduringmaturationofgravel-bedcon-structedwetlandstreatingfarmdairywastewaters.Wat.Res.,1998,32(10):3046-3054[4]KadlecR.H.,KnightR.L.TreatmentWetlands.LewisPublishers,Chelsea,Michigan,1996[5]..:,1999[6]VanceE.D.,BrookesP.C.,JenkinsonD.Anextractionmethodformeasuringmicrobialbiomasscarbon.SoilBiolo-gyandBiochemistry,1987,19(6):703-707[7],..:,1986[8]..:,1987[9]CurtisP.J.,AdamsH.E.Dissolvedorganicmatterquan-tityandqualityfromfreshwaterandsaltwaterlakesineast-centralAlberta.Biogeochemisty,1995,30(1):59-76[10]MannC.J.,WetzelR.G.Loadingandutilizationofdis-solvedorganiccarbonfromemergentmacrophytes.Aquat-icBotany,1996,53(1):61-72[11]GorhamE.,UnderwoodJ.K.,JanssenJ.F.,etal.ThechemistryofstreamsinsouthwesternandcentralNovaScotia,withparticularreferencetocatchmentvegetationandtheinfluenceofdissolveorganiccarbonprimarilyfromwetlands.Wetlands,1998,18(1):115-132[12]DefuXu.,JianmingXu.,JianjunWu.,etal.Studiesonthephosphorusadsorptioncapacityofsubstratesusedinconstructedwetlandsystems.Chemosphere,2006,63(2):344-352[13]StoutJ.D.,GohK.M.,RafterT.A.Chemistryandturn-overofnaturallyoccurringresistantorganiccompoundsinsoil.SoilBiochemistry,1981,5:1-73[14]LongM.N.Organicmattercomposition,microbialbiomassandmicrobialactivityingravel-bedconstructedwetlandstreatingfarmdairywastewaters.EcologicalEngineering,2000,16(2):199-221[15]Benner,MaccubbinA.D.,HodsonR.E.Anaerobicbiodegradationoftheligninandpolysaccharidecompo-nentsoflignocelluloseandsyntheticligninbysedimentmicroflora.Appl.Environ.Microbiol.,1984,47(5):998-1004[16],,.:.,2008,29(6):1508-1512[17],,..,2008,22(8):1240-12462744