Raws li kev txhawj xeeb thoob ntiaj teb txog kev tsis txaus dej thiab kev ua qias tuaj txuas ntxiv nce siab, kev tshawb nrhiav cov thev naus laus zis kho dej zoo, pheej yig, thiab ruaj khov tau nce ntxiv. Nyob rau pem hauv ntej ntawm qhov kev tshawb nrhiav no sawv cev rau alumina (Al₂O₃), tshwj xeeb tshaj yog nyob rau hauv nws cov qauv ua haujlwm thiab nano-structured, uas tau tshwm sim ua cov khoom siv tseem ceeb hauv kev ntxuav dej haus, kho cov dej khib nyiab hauv kev lag luam, thiab ua kom muaj kev nyab xeeb ib puag ncig.
Lub Hwj Chim ntawm Porosity: Activated Alumina
Alumina ua kom nquag, ib hom alumina oxide uas muaj qhov ntxeem tau ntau heev uas tsim los ntawm kev ua kom cov alumina hydroxide qhuav ntawm qhov kub siab, yog qhov zoo rau nws thaj chaw loj (feem ntau 250–1000 m²/g) thiab cov khoom nqus tau zoo heev. Nws daim ntawv thov tseem ceeb tshaj plaws thiab tau tsim zoo yog kev tshem tawm cov fluoride ions ntawm dej haus.
Cov tshuaj fluoride ntau dhau (ntau tshaj 1.5 mg/L) hauv cov dej siv yog ib qho teeb meem thoob ntiaj teb uas cuam tshuam rau ntau tshaj 200 lab tus tib neeg, ua rau muaj cov mob uas ua rau lub cev tsis muaj zog xws li mob hniav thiab mob pob txha. Cov tshuaj alumina ua haujlwm los ntawm kev nqus tshuaj lom neeg, tsim cov tshuaj aluminium-fluoro ruaj khov, txo cov tshuaj fluoride kom ua tau raws li cov qauv nruj uas Lub Koom Haum Kev Noj Qab Haus Huv Ntiaj Teb (WHO) tau teeb tsa. Nws muaj txiaj ntsig zoo thoob plaws ntau yam pH (3–12) thiab tshwj xeeb tshaj yog ua haujlwm zoo nyob rau hauv cov xwm txheej ze-nruab nrab (5.5–6.5).
Ntxiv rau fluoride, activated alumina zoo heev hauv kev cais cov hlau hnyav thiab metalloids lom, feem ntau yog arsenic. Arsenic ua rau muaj kev sib kis ntawm cov dej hauv av yog qhov xwm txheej ceev ceev rau kev noj qab haus huv pej xeem hauv ntau thaj chaw. Activated alumina muab kev tiv thaiv zoo, nqus ob hom As (III) thiab As (V), yog li tiv thaiv kev raug mob mus sij hawm ntev thiab cov mob qog noj ntshav.
Kev Siv Hauv Kev Lag Luam thiab Kev Siv Siab Tshaj Plaws
Qhov siv tau ntawm alumina nthuav dav tshaj li cov dej haus hauv nroog. Hauv cov chaw lag luam, nws ua haujlwm ua desiccant, ua kom qhuav cua compressed, roj av, thiab ntau yam txheej txheem los ntawm kev nqus cov dej noo. Nws kuj tseem txo qhov scaling thiab kev ua qias tuaj hauv boiler feedwater thiab cov tshuab cua txias.
Cov kev nce qib tshiab ntawm kev tshawb fawb tau thawb alumina mus rau hauv cov ntawv thov tshiab:
Kev siv tshuab Nanotechnology: Nano-alumina (Al₂O₃ NPs) muaj thaj chaw thiab kev ua haujlwm tsis tau muaj dua li. Cov kws tshawb fawb tau ua tiav cov nanoparticles no los ntawm cov ntawv ci txhuas pov tseg, tsim cov khoom nqus ntsuab pheej yig uas muaj peev xwm tshem tawm cov hlau lead (Pb²⁺) ions ntawm dej nrog kev ua haujlwm zoo txog li 98%.
Catalytic Ozonation: Alumina ua haujlwm ua tus txhawb nqa catalyst ua tau zoo. Cov catalysts zoo li Co₃O₄/Al₂O₃ txhim kho cov txheej txheem ozonation, ua rau cov pa phem organic uas nyob ruaj khov, suav nrog cov tshuaj seem hauv cov dej khib nyiab puas tsuaj sai sai, dhau ntawm qhov muaj peev xwm ntawm ozonation ib leeg.
Kev Siv Tshuab Membrane: Kev siv cov nanoparticles mesoporous γ-alumina rau hauv cov membranes nyias-film nanofiltration (TFN) tau hloov pauv txoj kev tshem dej ntsev. Cov membranes hloov kho no muaj peb npaug ntawm cov dej ntws thaum tswj cov nqi tsis lees paub ntsev zoo heev (txog li 98.4%), ua rau lawv ua haujlwm tau zoo rau kev ua kom dej mos thiab ntxuav.
Cov Zoo thiab Kev Ruaj Ntseg
Ib qho txiaj ntsig tseem ceeb ntawm alumina yog nws txoj kev ruaj khov. Tsis zoo li ntau cov lim dej siv ib zaug xwb, alumina ua kom rov ua dua tshiab tau. Tom qab ncav cuag nws lub peev xwm nqus tau, nws tuaj yeem ntxuav thiab rov siv dua rau ntau lub voj voog, txo cov nqi ua haujlwm thiab cov khib nyiab ib puag ncig. Nws cov tshuaj lom neeg ruaj khov, lub zog kho tshuab, thiab kev tiv thaiv kev puas tsuaj ntxiv ua kom muaj lub neej ntev hauv cov chaw kho mob nyuaj.
Saib Tom Ntej
Thaum lub ntiaj teb tab tom ntsib teeb meem dej ntau zuj zus, lub luag haujlwm ntawm alumina tau teeb tsa kom nthuav dav. Kev tshawb fawb txuas ntxiv mus rau hauv cov ntaub ntawv alumina uas tau hloov kho thiab sib xyaw ua ke txuas ntxiv thawb cov ciam teb ntawm kev ua tau zoo, tsom mus rau cov pa phem tshiab nrog kev ua kom raug thiab muaj peev xwm ntau dua. Los ntawm kev tiv thaiv kev noj qab haus huv pej xeem tiv thaiv fluoride thiab arsenic mus rau kev ua kom cov tiam tom ntej ntawm kev lim dej thiab rov siv dua cov thev naus laus zis, alumina tseem yog tus phab ej tseem ceeb thiab hloov pauv hauv kev nrhiav dej huv thiab muaj kev nyab xeeb rau txhua tus thoob ntiaj teb.
Lub sijhawm tshaj tawm: Tsib Hlis-11-2026
