市政污泥的固化填埋處理研究.pdf

1、l‘1nzHq7sI⑧天率大薯十目近n第一m^博士學(xué)位論文一■矗I啊■：爿j強■舟■I一級掌科：圭盎工理學(xué)科專業(yè)：鲞王握作者姓名：置垂些指導(dǎo)教師：臼型匭塾撞2005年11月AbstractThepresentenvironmentalregulationsinChinarequiresludgeahndofwastefromwastewaterplant，tobedisposedinenvironmentallysoundnlalLrl

2、erTodevelopaneffectiveandeconomicmethodforsludgemonofill，studiesincludelaboratorytests，theoreticalanalysisandnumericalsimulationswereconductedinthemethodofgeotechnicalandgeoenvironmentengineeringDifferentkindsofsludgedis

3、posalmethodatpresentwerecomparedfirstlyThenbothadvantagesanddisadvantagesofthesemethodsweresummarizedInthesemethods1andfillwasconsideredtobemoresuitableforChinaInordertosolvethetechnicalproblemsinlandfillofsludge，amethod

4、，inwhichthesludgewillbedisposedbymonofillafterbeingsolidifiedWasputforwardinthispaperLaboratorytestswereconductedtodeterminethefeasibilityofsolidifyingsludgeusingflyash，lime，andsiltyclayatvariedmixingratiosVariableheadpe

5、rmeabilitytest，torsionalvanesheartesterandpocketpenetrometerwereutilizedtostudyengineeringpropertiesofsolidifiedsludgeSignificantincreasesinsludgestrengthandpermeabilitywasachievedtomatchsuitabilityformonofillItWasreveal

6、edthatthestrengthofsolidifiedsludgeincreasedwiththecuringperiodandthedecrementofmoisturecontentTheaddingoflimeCanimprovethevolumestabilityandpermeabilityofsolidifiedsludgeBasedonorthogonalexperimentthesolidifyingeffectiv

7、enessofsiltyclayWasfoundtobemorenotablethanflyashThisCallberesultedfromthespecialenvironmentofsludgeinwhichtheactivitiesofflyashwasnotexcitedBasedonthesetests，asuitablesolidifyingmethodwasputforward：m(1ime)：m(siltyclay)：

8、m(sludge)=l：4：5Freezedryingtechnologyandscanningelectronmicroscope(SEM)wereutilizedtostudythemicrostructureofsolidifiedsludgeItWasfounddensityofsludgewasimprovedaftersolidificationThehydrationeffectofsolidilyingmaterials

9、andsludgeCanbethereasonofimprovementinstrengthandcomplicationinmicrostructureApplyingtheoryoffractalgeometryquantitativeanalysiswascarriedoutontheSEMimagesFractaldimensionincreasedwiththeaddingofsolidifyingmaterialandcur

10、ingtimeTheanalysisalsevealedaconsiderablepositivecorrelationbetweenfractaldimensionandstrengthExtractiontestswereconductedtostudytheleachatepropertiesThecolumnfillwithlimeandsludgeperformsthehighestpermeabilitythelargest