Daim ntawv thov thiab cov txiaj ntsig ntawm cov alumina ua haujlwm hauv dej kho

Hauv kev kho cov dej, ua kom dav siv nyob rau hauv kev haus cov pa dej tshwj xeeb vim nws txoj kev ua tiav zoo tshaj plaws, tshuaj lom neeg ruaj khov thiab hloov kho kom dawb. Raws li cov khoom siv hluav taws xob ua tau zoo thiab kev lag luam dej ua haujlwm zoo hauv kev tshem fluoride, arsenic, phosphate thiab lwm yam hlau. Kab lus no yuav qhia txog cov yam ntxwv thiab kev ua tshuab ntawmUa kom Alumina rau kev kho cov dejnyob rau hauv kom meej.

Cov yam ntxwv ntawm activated alumina:

Ua kom Alumina yog qhov ntxeem tau, lub siab-thaj chaw-thaj tsam ntawm Alumina nrog cov yam ntxwv hauv qab no:

• Thaj chaw thaj chaw siab (200-400 m² \/ g), muab cov chaw tshaj tawm muaj ntau ntawm cov chaw adsorption ntau.

• Muaj peev xwm ua tiav muaj peev xwm ua tiav, xaiv tshem cov pa paug qub xws li fluorine xws li fluorine, cov hlau, thiab hlau hnyav.

• Kev siv tshuaj tsis muaj peev xwm, acid thiab alkali tsis kam, haum rau cov chaw sib txawv (pH 5-9).

• Muaj zog txhua yam, tsis yooj yim rau pulverize, haum rau kev siv ntev.

• Rov Ntxiv, muaj peev xwm ua tau zoo dua tshiab los ntawm cov kua qaub los ntawm cov kua qaub los yog kev kho kom sov siab, txo cov nqi kev ua haujlwm.

Mechanism ntawm kev ua ntawm activated alumina hauv kev kho dej:

Ua kom Alumina tshem cov kuab paug los ntawm dej feem ntau yog los ntawm kev kos duab lub cev thiab tshuaj kos duab:

(1) Tshem tawm fluoride

• Cov tshuaj fluoride fluoride fluoride fluoride fluoride fluoride flual nrog pawg neeg Alumina:

Al2o3o +2 f- → al2o3⋅ (n-1)} {} {} {} {{) H2O⋅2F - {19} Oh-

• Tsim nyog rau kev haus dej haus hauv cov chaw fluoride siab.

(2) arsenic tshem tawm

• Cov adsorbs li (iii) thiab li (v), tshwj xeeb tshaj yog nyob rau hauv oxidizing tej yam kev mob (as (v) yooj yim dua tshem tawm).

• Muaj peev xwm ua ke nrog oxidants (xws li kmno₄) los txhim kho arsenic tshem tawm tus nqi.

(3) Hnyav Tso Tawm Hlau

• Strong adsorption capacity for lead (Pb²⁺), cadmium (Cd²⁺), chromium (Cr⁶⁺), etc.

• Cov tshuaj tiv thaiv saum npoo av thiab cov khoom lag luam electrostatic ua haujlwm ua ke.

(4) Phosphate thiab cov organic teeb meem adsorption

• Siv rau kev tshem tawm ntawm phosphate (pauj) hauv Eutrophic dej lub cev.

• Nws tseem muaj cov txiaj ntsig adsorption ntawm qee cov pa phem.

Daim ntawv thov ntawm activated alumina hauv kev kho dej:

(1) Kev haus dej haus huv

• Tshem tawm cov tshuaj tua fluoride: Sau lub lim tank nrog ua kom Alumina kho kom zoo rau cov av hauv av.

• Arsenic Tshem Tawm: Ua ke nrog cov roj av hloov kho Alumina txhawm rau txhim kho kev ua tiav kev ua tiav.

(2) Kev Kho Mob Kab Yeeb Nkab

• Electropating wastewater: tshem cov hlau loj xws li npib tsib xee (ni²⁺) thiab tooj (cu²⁺).

• Neeg lim dej: Adsorb cov pa phem xws li cov organic Sulphur thiab phenols.

(3) kev kho dej tshwj xeeb

• Kev kho kom muaj kev kho dej khib nyiab: adsorb luam xov tooj cua nuclides (xws li Uranium thiab Thorium).

• Cov pa dej Pas dej ua luam dej: hloov ib feem ntawm cov chlorine kev tua kab thiab txo cov khoom lag luam.

Kev sib piv ntawm cov alumina acumina nrog lwm cov ntaub ntawv adsorption:

Cov Lus Qhia Cov Ntsiab Lus: Ua kom Alumina yog cov hom phiaj ntau rau kev tshem tawm cov pa paug dawb thiab muaj tsawg dua.

Qhib AluminaTau dhau los ua cov khoom tseem ceeb nyob hauv kev kho dej ntawm kev kho dej vim nws txoj kev kawm tiav kev kawm tiav, cov muaj tshuaj nyob ruaj khov thiab cov yam ntxwv txuas ntxiv. Tshwj xeeb tshaj yog nyob rau hauv kev tshem tawm cov tshuaj fluorine, arsenic thiab cov hlau hnyav, nws muaj cov txiaj ntsig zoo tsis txaus ntseeg. Nyob rau hauv lub neej yav tom ntej, nrog kev nce qib ntawm kev hloov kho tshuab thiab cov ntaub ntawv sib xyaw, daim ntawv thov tau txuas ntxiv, muab cov tshuaj tsis txaus siab ntxiv rau kev nyab xeeb thoob ntiaj teb.