天然高分子阳离子改性絮凝剂的制备及其性能研究-生物医学工程专业论文.docx

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2018-05-05 发布于上海
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天然高分子阳离子改性絮凝剂的制备及其性能研究-生物医学工程专业论文.docx

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天然高分子阳离子改性絮凝剂的制备及其性能研究-生物医学工程专业论文

ABSTRACTFlocculatingisoneofthemostextensivelyusedamongallwatertreatmentmethods.Thenatureoftheflocculantsinfluencesdirectlytheeffectofflocculating.Thenaturalorganicmacromoleculeusedinwatertreatmentisnonpoisonous,easilybiodegradable,nosecondarypollution,wideRawmaterialsources,andlowpriceadvantage.Thesemeritshavebeenpaidattentioninrecentyearsindevelopmentandapplication.Thispaperselectedthenaturalorganicmacromoleculematerialwithabundantsourceandcheapprice一thepeanut,madethemintopowderformflocculant,andstudieditsflocculatingperformanceandapplicationbasedontheanalyzeandsummarizingthepreparationoftheexistingnaturalorganicmacromoleculeflocculantsandflocculatingperformance.Firstly,ThenaturalmacromolecurflocculantwaspreparedwithpeanutandcationicmodificationETA.Thispaperdesignedaseriesofperformanceexperimentschemes,settingthesuspendingliquidofdiatomiteasthetarget.Throughquadratureexperimentgetthebestsynthesizecondition(the3gpeanutshellpowder)were:alkalitemperature50℃,alkalitime90mines,preparationreflectingtemperatureas80degrees,preparationreflectiontimeis3hour,theetherturnsadosage(30%)andpeanutshellpowderquantitycompare1:5,Flocculateexperimentindicatecactusflocculantshangtodiatomiteturbidliquiddepartmentisitflocculateperformancew elltohave,transm ittancecanreachabout85%infinalsurfacing.Wehavestudiedthebesttreatmentresultundertheinfluenceofdifferentinfluencefactors.Havingdonecorrespondingcomparisonwithotherflocculants,theresultshows,thecactusflocculantscanmatchinexcellencewiththemtoflocculatetheresult,flocculatingconstituentitsspendsizetobeheavy,fasttosubsidespeed.In addition,thistexthasalsodonepreliminaryexperimentresearchtoitspracticalapplication,theexperimentalresultshows:Thenaturalmacromolecurflocculantmakesbetterresultto pretreatmentofsludge，electroplating effluentandwastewaterfromliving,gettingridofchromiumratecanbeupto74%andgettingridofphosphorratecanbeupto58.3%.Dealingwithsludgethe fineresult.Keywords:naturalmacromolecur,cationicmodification,peanut,flocculate-efficient,f