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1、納米技術(shù)在污水處理中的應(yīng)用摘要由于當(dāng)前社會水污染現(xiàn)象嚴(yán)重,而常規(guī)方法并不能行之有效的治理所有類型的水污染,并且其單一效果也不能盡如人意,必須尋求新的合適、有效的處理方法。該論文是以參考前人對納米技術(shù)在污水處理方面的實驗、研究結(jié)果,加以對比常規(guī)污水處理方法從而找的最優(yōu)方案的綜述性文章。對比可知納米技術(shù)相對常規(guī)方法能夠使粒子具有特殊的功能性,而一些特殊性能剛好在污水處理中期到良好的效果:深度催化法能行之有效的將多類有機污物徹底分解例如鹵代烴類、氯代酚類、氰化物、各種有機酸及能夠處理金屬粒子等;吸附法因?qū)τ谒w重金屬污染處理成本少,操作簡單而廣泛
2、應(yīng)用,納濾膜可以替代吸附和電化學(xué)方法,處理制漿與造紙工業(yè)廢水中大量的污染物;絮凝沉淀法是膠體類廢水處理的有效方法之一,可有效地降低廢水的濁度和色度,去除多種高分子有機物和某些重金屬離子(汞、鉛等);有機/無機復(fù)合納米粒子以其同時具有無機材料優(yōu)越的光、電、磁等性質(zhì),有機材料的優(yōu)良加工性能、生物相容性能,對于許多種難以處理的水污染治理情況,其有著對應(yīng)的方法,能簡潔有效的將問題解決。納米技術(shù)在水處理中的應(yīng)用研究已展現(xiàn)了廣闊的前景,但還需要進一步研究和改善。關(guān)鍵詞:污水處理;納米技術(shù);光催化法;納米絮凝;納濾NanotechnologyandIts
3、ApplicationinWaterTreatmentAbstractAtpresent,China'swatersituationisveryserious,thecurrentsewagetreatmentmethodsinclude:settlement,flocculation,filtration,adsorption,biologicaltreatment,butthesemethodswillinevitablybringaboutapollution,butalsothecostofrenewablelong-termdea
4、lwithexpensiveorandothershortcomings.Althoughsewagetraditionalbiologicaltreatmentcanbeusedtodealeffectivelywiththelaw,buthundredsofhighlytoxiccompoundscannotbeusedtodealwithbiologicalmethodsmustbeappropriatetoseeknew,effectivewaystodealwith.Thepaperisareferencetosewagetrea
5、tmentinpreviousexperiments,researchfindings,conclusionsandcomparisontofindthemostsuitabletreatmentprogramoverviewarticle.Nanotechnologywillenablethefunctionofparticleswithspecialproperties,andsomespecialpropertiesofthemedium-termsewagetreatmentjusttogoodeffect:thedepthofca
6、talysiscanbemoreeffectiveandcompletedecompositionoforganicpollutantssuchashalohydrocarboncategory,chloro-phenols,cyanides,variousorganicacidsandmetalparticles,etc.;absorptionwaterweightduetothecostofprocessingislessmetalpollution,simpleoperationandwideapplicationofnanofilt
7、rationmembranecanbealternativestotheadsorptionandelectrochemicalmethodsofdealingwithpulpandpaperindustryalargenumberofpollutantsinwastewater;flocculationprecipitationmethodisaneffectivemethodofwastewatertreatmentofwastewatertobeeffectiveinreducingturbidityandcolor,Removalo
8、favarietyofpolymericorganicmatterandsomeheavymetalions(mercury,Fuk,lead);organic/inorgani