PAC cog

Polyaluminium Chloride qhia

Polyaluminium Chloride (PAC), tshuaj formula [Al2(OH)nCl6-n.xH2O]m (m)<10, n=125). It is an inorganic polymer compound, which is a hydrolysis product between Al2Cl3 and Al(OH)3. It is generally considered a complex compound, where aluminum is the central ion and hydroxide and hydrogen ions are the ligands. It is a polymer formed by cross-linking through the bridging action of hydroxyl groups; the number of hydroxyl groups carried in the molecule varies.

Cov qauv ntawm polyaluminium chloride yog tsim los ntawm ntau hom carboxyl complexes nrog ntau hom. Nws muaj qhov ceev ceev flocculation thiab nag lossis daus, ntau yam kev siv pH qhov tseem ceeb, thiab tsis muaj corrosive rau cov khoom siv kav dej. Nws muaj cov txiaj ntsig zoo ntawm cov dej huv thiab tuaj yeem tshem tawm cov xim SS, COD, BOD, nrog rau cov hlau hnyav xws li arsenic thiab mercury hauv dej. PAC tau dav siv hauv dej haus, dej ua haujlwm, thiab dej phwj kho thaj chaw.

Cov txheej txheem luv luv qhia txog Polyaluminium Chloride (PAC)

Reaction sib npaug

2Al(OH)3＋(6-n)HCl →Al2(OH)nCl6-n+(6-n)H2O

Al2(OH)nCl6-n+mx H2O →[Al2(OH)nCl6-n .xH2O]m

Cov txheej txheem ntws ntawm PAC muaj ob peb ntu: Kev npaj cov ntaub ntawv raw, Cov Lus Teb; Kev sib cais, Compounding, ziab thiab ntim.

Txhawm rau tsim cov tshuaj polyaluminum chloride (PAC) siv aluminium hydroxide thiab hydrochloric acid, cov tshuaj tiv thaiv yuav tsum tau ua raws li qhov kub thiab txias, siab, thiab lub sijhawm, thiab yuav tsum muaj kev noj zaub mov zoo ntawm aluminium hydroxide thiab hydrochloric acid. Ib txoj kev sib cais ib kauj ruam yog siv los tsim cov khoom lag luam polyaluminium chloride kua. Vim yog lub hom phiaj sib txawv ntawm cov khoom yuav tsum tau PAC, yuav muaj cov kev cai sib txawv rau cov ntsuas zoo ntawm PAC cov khoom. Piv txwv li, hais txog Al2O3 cov ntsiab lus thiab cov hauv paus ntawm cov khoom. PAC kua khoom tsim los ntawm ib-kauj ruam yaj txoj kev siv aluminium hydroxide thiab hydrochloric acid tuaj yeem muaj cov ntsiab lus Al2O3 ntawm 14-20% thiab qhov pib ntawm 30-55%. Qhov no feem ntau yog nyob ntawm qhov kev faib ua feem ntawm cov khoom siv ntxiv thiab cov tshuaj tiv thaiv ntau lawm.

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