动水条件下悬浮态泥沙颗粒吸附TP规律探讨惠二青

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(2006CB403304);(50679038,90610028):(1977-),,,,,TP1,1,2,2(11,100084;21,443002):,,,TP,,TP,:,TP5d,8h;(d),TP;,,TP:;TP;;:TV142:A:04682155X(2009)0220034205,,,,,,,[1-3],,;,-;,[4-6],,,,[7-10];,,,D50,P,TP,,TP,,TP,1,,112215km2,61%,6488tPkm2,,505m,4113t,5174kgPs,,1163t,7175hm2,11163t,0187t,43©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),114t,11868tPd,3164152002,,2211,20064015m1m115m300mL1500mL,TP:;:192120145m,,,100mL,10mL,,,1031051h,,,011mg,Cs=(A-B)106PV(1),Cs(mgPL);A++(g);B+(g);V(mL)(1),104mgPL213,,010049mm50g(),,24h,,10g,,,,015m,2140145m6L,L1L2L3H1H21000mL40%C70%C100%C0101g0102g;CTP,,208mg6h60rPmin2min,24hTPTN,,,()215,(),5mL,TP216010192mgPL,TP11Table1TheinitialTPconcentrationinthedifferentwatersamplesL1L2L3H1H2TP(mgPL)0100768010134401019202129824157823TP,53©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=C0-CiGVV=C0-CiG(2),ATP,mgPg;C0CiiTP,mgPL;G,gPL;V,L311,TP,(2),,11Fig.1Variationofadorptionquantityperunitqualitysiltwithtimeinthedifferentwatersamples2TPFig.2VariationofTPconcentrationwithtimeinthedifferentwatersamples12,,((3)(5))(1-3),,,,,,,,-[11,12],,(08h)[13],,24h,AL1=01014ln(t)+0.0068r2=0.9250(3)AL2=01013ln(t)+0.029r2=0.8022(4)AL3=01018ln(t)+0.057r2=0.8755(5),AL1AL2AL3TPL1L2L3,gPmg;t,d,,6h80%,[8]12,TP,,,,,312TPTPTP,,TP,3AH=63.783C-0.9378(6)AL=0.146C-0.0202r2=0.9936(7),ALAHTP,gPmg;t,d,TP,63©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[9],(6)(7)(2),A=C0G-GiG(8)(2),,313TPTP(8)A=C0G-CiG,,G,C0G,,,4TPFig.4RelationbetweenadorptionquantityperunitqualitysiltandTPconcentrationatthedifferenttimeinthedifferentwatersamples(2)TPTPTP,4,(9)(11)AL1=-4.8077C+0.0369(9)AL2=-4.8077C+0.0646(10)AL3=-4.8077C+0.0923(11)4,,TP,:(1),TPTP5d,8h,(2),(d);,,TP(3)TP(4),,,:[1],,,.[J].,2006,37(1):10-15.[2],.[J].,2004,(5):5-11.[3],.[J].,2004,(6):75-81.[4]KromM.D.,BennerRA..Adsorptionofphosphateinanoticmarinesediments[J].LimnolOceanogr,1980,25(5):797-806.[5]KhaildR.A..Phosphorussorptioncharacteristicsoffloodedsoil[J].SoilSci.Soc.Am.J,1979,(41):305-310.73©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[6]KaiZiervogel,StefanForster.Aggregationandsinkingbehaviourofresuspendedfluffylayermaterial[J].ContinentalShelfResearch,2005,(25):1853-1863.[7],,.TPTN[J].,2006,37(7):15-18.[8],,.[J].,2006,22(9):10-13.[9],.[J].,2005,36(10):93-96.[10],,,.[J].,2006,37(1):48-51.[11],,.[J].,2004,26(1):132-136.[12],,.[J].(),1997,27(3):413-4181PhosphorusadsorptionruleofthesuspendedsiltintheturbulentwaterbodyHUIEr2qing1,JIANGChun2bo1,LIUDe2fu2,HUANGYu2ling2(11DepartmentofHydraulicEngineering,TsinghuaUniversity,Beijing100084,China;21DepartmentofEnvironmentEngineering,ThreeGorgesUniversity,YichangHubei443002,China)Abstract:Thesuspendedsiltistheimportantcarrierofthetransformationandtransportationtothemainrestrictedfactorsintheeutrophicwaterbodies,suchasnitrogenandphosphorus.Thepreviousresearchesabouttheadsorptionofsilthavemostlybeenfocusedonthewaterbodieswithhighpollutionconcentration,whilefewstudieswasconcentratedonthewaterbodieswithlowpollutioncontents.Aimingatthisproblem,basedontheanalyzedresultsofthesiltcontentanddiameter,thewaterfromtheXiangxiRiverwasusedtopreparedifferentconcentrationwatersamples.Theintermittentwaterflowturbulencewassimulatedbymeansoftheagitatorimplementwiththecontrolledvelocity.TheexperimentsinthelaboratorywereconductedtoanalyzetheadsorptionruleinthewaterbodieswiththelowTPconcentration.Theresultsshowedthatwhiletheintermittentturbulenceexists,thetimetoreachtheequilibriumstateofabsorption2desorptioninthewaterbodieswiththelowerpollutionconcentrationsisabout5days,whichismuchslowerthanthatinthewaterbodieswiththehigherpollutionconcentrations(upto8hours).TherelationbetweentheabsorptionquantityofperunitqualitysiltanddayscanbepresentedasthenaturallogarithmandtherelationbetweentheabsorptionquantityofperunitqualitysiltandtheinitialTPconcentrationsinthewatersamplecanapproximatelybeexpressedasthelinear.TherelationbetweentheabsorptionquantityofperunitqualitysiltandtheinstantaneousTPconcentrationsinthewatersamplecanberepresentedaslineariftheoutersource(releaseorassimilation)andthevariationofthesiltcontentinthewaterbodieswiththetimewasnegelected.Keywords:suspendedsilt;totalphosphorus;adsorption;thewaterbodywithlowpollutionconcentration83