Lub diatomite lim pab feem ntau yog ntxiab cov khoom impurity hais raug tshem tawm hauv cov kua ntawm qhov chaw thiab cov channel ntawm nruab nrab los ntawm peb txoj haujlwm hauv qab no, thiaj li ua tiav lub hom phiaj ntawm cov kua dej sib cais:
1. Sieving nyhuv Qhov no yog cov nyhuv lim dej. Thaum cov kua ntws los ntawm lub ntiaj teb diatomaceous, qhov pores ntawm lub ntiaj teb diatomaceous yog me dua li qhov loj ntawm cov impurity hais, yog li cov impurity hais tsis tuaj yeem hla thiab cuam tshuam. Cov nyhuv no hu ua Rau qhov kev tshuaj ntsuam xyuas. Qhov tseeb, qhov saum npoo ntawm lub ncuav mog qab zib lim tuaj yeem suav tias yog lub ntsej muag sieve nrog qhov sib npaug nruab nrab qhov pore loj. Thaum txoj kab uas hla ntawm cov khoom tsis yog tsawg tshaj li (los yog me ntsis tsawg dua) txoj kab uas hla ntawm lub pores ntawm lub diatomite, cov khoom hais yuav "sifted los ntawm lub ncua kev kawm ntawv". Cais tawm, ua si lub luag hauj lwm ntawm qhov chaw pom.
2. Cov nyhuv qhov tob Qhov tob yog qhov tuav cov nyhuv ntawm kev sib sib zog nqus pom. Hauv kev sib sib zog nqus pom, cov txheej txheem sib cais tsuas yog tshwm sim hauv "sab hauv" ntawm qhov nruab nrab. Ib feem ntawm cov impurity me me uas nkag mus rau saum npoo ntawm lub ncuav mog qab zib lim yog thaiv los ntawm cov kab tortuous microporous hauv lub ntiaj teb diatomaceous thiab cov pores me me hauv cov ncuav mog qab zib lim. Cov kab no feem ntau me dua li cov micropores ntawm lub ntiaj teb diatomaceous. Thaum cov khoom tsoo cov phab ntsa ntawm cov channel, lawv tuaj yeem tso cov kua dej tawm. Txawm li cas los xij, seb nws tuaj yeem ncav cuag qhov no yog nyob ntawm lub zog inertial thiab tsis kam ntawm cov khoom. Qhov sib npaug, hom kev cuam tshuam thiab kev tshuaj ntsuam no zoo ib yam, ob qho tib si yog cov cuab yeej siv tshuab. Lub peev xwm los lim tawm cov khoom siv yog qhov tseem ceeb tsuas yog cuam tshuam nrog qhov sib txheeb loj thiab cov duab ntawm cov khoom thiab qhov pores.
3. Adsorption Lub adsorption yog txawv kiag li los ntawm cov saum toj no ob filtration mechanisms. Qhov tseeb, cov nyhuv no tseem tuaj yeem suav tias yog qhov kev nyiam ntawm electrokinetic, uas feem ntau yog nyob ntawm thaj chaw ntawm cov khoom siv thiab lub ntiaj teb diatomaceous nws tus kheej. Thaum cov hais nrog me me pores nyob rau hauv lub diatomaceous lub ntiaj teb sib tsoo nyob rau hauv lub puab nto ntawm lub ntiaj teb ntxeem tau diatomaceous, lawv yog attracted los ntawm qhov opposite nqi. Kuj tseem muaj hom kev sib koom ua ke ntawm cov khoom los tsim cov pawg thiab ua raws li lub ntiaj teb diatomaceous. Ob leeg yog adsorption, thiab cov adsorption yog qhov nyuaj dua li ob qho dhau los. Nws yog feem ntau ntseeg tias yog vim li cas vim li cas cov khoom me me tshaj qhov pore txoj kab uas hla yog daig yog vim: (1) Intermolecular rog (tseem hu ua van der Waals attraction), suav nrog dipoles nyhuv, induced dipole nyhuv thiab instant dipole nyhuv; (2) lub neej ntawm Zeta muaj peev xwm; (3) ion txauv txheej txheem
Los ntawm peb lub luag haujlwm saum toj no, nyob rau hauv cov txheej txheem net siab pom ntawm kev ncua, cov xoob granular diatomite lim pab yog siv los ua cov lim nruab nrab, uas yog tsuas yog muab ntau qhov pores li ua tau rau cov lim nruab nrab txheej, lim ncuav mog qab zib, thiab tsim cov txheej txheej ntawm lub qhov hws tso cai rau kev ncua kom dhau los ntawm qhov me me ntawm lub qhov hws ntawm cov txheej txheem impregnation ntawm cov kua hauv cov txheej txheem impurities, thiab cov txheej txheem ntawm cov txheej txheem ntawm kev tshem tawm. thiab channel ntawm qhov nruab nrab, kom cov khoom thiab cov kua sib cais.
Post lub sij hawm: Jun-08-2021