Fluoride yog cov ntxhia tshuaj lom. Nws feem ntau pom muaj nyob hauv cov dej haus. Cov qauv dej haus thoob ntiaj teb tam sim no rau fluoride tsim los ntawm World Health Organization (WHO) yog 1.5 ppm. Cov tshuaj fluoride siab tuaj yeem ua rau cov hniav thiab pob txha fluorosis, yog li cov fluoride ntau dhau yuav tsum tau muab tshem tawm ntawm cov dej haus. Ntawm ntau yamtshuaj kho dejmuaj, polyaluminium chloride (PAC) yog thawj qhov kev xaiv rau kev tshem tawm fluoride. PAC lub peev xwm tshem tawm cov tshuaj fluoride yog los ntawm nws cov khoom siv tshuaj lom neeg thiab cov txheej txheem ntawm kev ua. Cia peb tshawb nrhiav nws cov txheej txheem, qhov zoo thiab kev siv.
Mechanism ntawm kev txiav txim ntawm polyaluminium chloride:
Polyaluminium chlorideyog ib qho inorganic coagulant tsim los ntawm cov tshuaj tiv thaiv ntawm txhuas hydroxide thiab hydrochloric acid. Nws feem ntau yog siv los ua flocculant hauv kev kho dej hauv nroog thiab kev lag luam.
Polyaluminium chloride electrostatically adsorb thiab ua ke nrog fluoride ions los tsim ntau yam kev ruaj khov. Qhov no ces ntxiv cov ntaub ntawv thiab precipitates insoluble txhuas fluoride.
Aluminium ions thiab fluoride ions kuj tuaj yeem tsim ntau yam kev ruaj khov (xws li , txo cov concentration ntawm cov fluoride dawb hauv dej.
Qhov zoo ntawm PAC ua ib qho defluoridant
Kev ua haujlwm siab: PAC tuaj yeem ua tiav qhov tseem ceeb ntawm kev tshem tawm cov tshuaj fluoride, feem ntau tshaj 90% nyob rau hauv kev pom zoo. Piv nrog rau cov tshuaj txhuas txhuas ntsev, PAC muaj cov nqi them ntau dua thiab qhov nrawm nrawm dua. Lub defluoridation efficiency yog nce los ntawm 30% ntawm tib koob tshuaj.
Kev lag luam: Tus nqi kho mob raug txo los ntawm ntau dua 40% piv rau cov thev naus laus zis xws li rov qab osmosis, thiab tsis tas yuav tsum muaj cov cuab yeej nyuaj.
Thiab daim ntawv thov pH yog dav (5.0-9.0). Thiab cov dej turbidity tuaj yeem raug txo ib txhij.
Tsawg sludge ntau lawm: Tsawg sludge tsim, uas yooj yim rau kev tswj.
Cov lus ceeb toom ntawm PAC ua tus defluoridant:
PAC ua tau zoo tshaj plaws ntawm me ntsis acidic rau nruab nrab pH qhov tseem ceeb (kwv yees 6.5 txog 7.5). Kev tswj hwm tus nqi pH kom zoo kom tshem tawm cov tshuaj fluoride ntau tshaj plaws.
Kev tshem tawm cov tshuaj fluoride yog nyob ntawm qhov pib fluoride concentration thiab ntau npaum li cas ntawm cov coagulant.
Kev siv PAC hauv kev tshem tawm cov tshuaj fluoride
Kev kho dej hauv nroog: Ua kom cov dej haus muaj kev nyab xeeb los ntawm kev txo cov tshuaj fluoride mus rau qib siab.
Kev kho dej khib nyiab muaj: Tshem tawm cov fluoride los ntawm cov dej khib nyiab tsim los ntawm kev lag luam xws li iav tsim, semiconductor ntau lawm thiab cov nroj tsuag chiv.
Ecological restoration: Kho cov dej hauv av thiab cov av uas muaj cov tshuaj fluoride los tiv thaiv ib puag ncig ecological.
Kev ua liaj ua teb thiab ib puag ncig rov qab los: Tshem tawm cov fluoride ions los ntawm cov dej hauv dej kom tsis txhob muaj av salinization thiab qoob loo puas tsuaj.
Polyaluminium chloride yog ib qho pov thawj thiab muaj txiaj ntsig zoo rau kev tshem tawm cov tshuaj fluoride hauv kev kho dej. Nws muaj peev xwm ua kom condense thiab adsorb fluoride ions ua rau nws xaiv thawj zaug hauv nroog thiab chaw lag luam. Nws yog ib qho tseem ceeb heev uas yuav tau xaiv ib tus neeg muab tshuaj lom neeg ntseeg siab ntawm ntau yamPAC tus neeg muag khooms. Koj yuav tsum txheeb xyuas lawv cov kev tsim nyog thiab cov khoom zoo. Yog tias koj xav tau kev pab hauv kev yuav PAC, thov qhia rau kuv paub. Peb tuaj yeem muab cov qauv dawb thiab xaiv cov kev pabcuam. tos ntsoov ntsib koj!
Post lub sij hawm: Apr-03-2025