車田沸石作為污水凈化劑的應用研究.pdf

1、桂林工學院碩士學位論文車田沸石作為污水凈化劑的應用研究姓名：姚煥玫申請學位級別：碩士專業(yè)：礦產(chǎn)普查與勘探指導教師：楊國清2002.6.1桂林工學院碩士學位論文AbstractZeoliteis&kindofsilicateofalum：InumcontainingwaterSince1950s’，ithasbeenappliedinindustryfromdisplayingmineralandreceivesuniversalatte

2、ntioninthefieldofscienceforitsphysicalandchemicalcharacteristicsEspeciallyafter1970itiSwelIknownthatzeolitecanbecomewastewaterdecontaminationinenvironmentalengineeringStilibiteinChetian，Guangxi，discoveredin1989，hasbeenta

3、kenintoaccountbyacademiccirclesInordertoexploitthisOreandexplorepossibilitiesofwastewatertreatmentofstilibite，writerhasdoneaseriesofexperimentstoadvanceitsabilityofpurificationofwastewaterinrecenttwoyears，includingmodifi

4、cationofstilibirewastewatertreatmentofstilibiteanddiscuasodthemechanismofitspurificationThefollowingaremainachievementsthroughresearch：l。Throughselectingtheparametersforstilibitemodifyingsuch瓣activechemical，activetime，tr

5、eatmenttemperatureandroasttemperature，theactivatedprocessofnaturestilibiteisstudied2Throughstaticstirringexperiments，modifiedstilibitehas900dfunctionintheremovalofcolormuddydegree，heavymetalions。CODandFinallkindsofwastew

6、ater強oabsorptionofmodifiedstilibiteisselectiveinacomplexwastewaterwithmanyheavymetalions，theabsorptionorderisZn。十C∥十C，TheabilityofactivechemicalforcheremovalofheavymetalionsdecreaSesprogressivelyaccordingtothefollowingor

7、der：HClNaOHNaCIMgCl2AICl3一Feel3確eremovalabiliIyofstibilitefofCODandFiSIimited。3TheammonianitrogenadsorptionwithmodifiedstilibitecanbewelldescribedbyfreundlichequationQ=08045ce3”TheresultshowsthatstilibitemodifiedbyNaClso

8、lutionpoSSeS∞sanabilityofremovingNHtinnotonlystaticstirringexperimentsbutalsotheabsorptioncolumnTl豫maximumcationexchangeeapacity(CEC)ofNH4comesupto596mS／g4TheresultshOwsthatstilibitecanbeusedrepeatedlyoverfourtimesaflerr

9、egeneration5ByusingmodemtesttechniqueofIRspectra，thebasicchar∞teristicsofnaturestibiliteandmodifiedstibilitearestudied。Modifyingistheprocessofexchan掰ngpositiveionandnotchangestheframeworkchemicalelements6Thedynamicadsorp

10、tionofstilibiteinwastewaterisanalyzed，Byapplyingthetheoryofchargecompensationandthesurfacecomplexsuccessfullydiscussedtheabsorption—mechanismofitspurificationofwastewater7下heresultshowsthatmodifvinscanadvancetheremovaIab

11、ilitiesofnaturesti]ibiteformanypollutingsubstance。Therefo端modifiedstilibiteisa鬈。穗wastewaterdecontaminationandisworthmakingafurthertoexploreandexploitKeywords：stilibite；wastewaterdecontamination；absorptionmechanism；modify