Polyacrylamide(PAM) yog cov organic polymer flocculant dav siv hauv kev kho dej. Cov kev qhia ntawm PAM muaj xws li ionicity, hydrolysis degree, molecular hnyav, thiab lwm yam. Cov ntsuas no muaj kev cuam tshuam loj rau cov nyhuv flocculation ntawm kev kho dej. Kev nkag siab txog cov ntsuas no yuav pab koj xaiv PAM cov khoom lag luam sai sai nrog cov lus qhia tsim nyog.
Kev kho siab
Lonicity yog hais txog seb PAM cov saw hlau molecular muaj qhov zoo lossis qhov tsis zoo. Qhov degree ntawm ionization muaj qhov cuam tshuam loj rau cov nyhuv flocculation ntawm kev kho dej. Feem ntau hais lus, qhov siab dua qhov ionicity, qhov zoo dua cov nyhuv flocculation. Qhov no yog vim cov ionic PAM molecular chains muaj ntau nqi thiab tuaj yeem nqus tau cov khoom tshem tawm zoo dua, ua rau lawv sib sau ua ke los tsim cov flocs loj dua.
Polyacrylamide feem ntau muab faib ua anionic (APAM), cationic (CPAM), thiab non-ionic (NPAM) hom raws li lawv ionicity. Peb hom PAM no muaj cov teebmeem sib txawv. Hauv kev siv tswv yim, qhov tsim nyog ionicity yuav tsum raug xaiv raws li cov khoom siv xws li pH tus nqi ntawm cov dej kho, electronegativity, thiab concentration ntawm cov khoom tshem tawm. Piv txwv li, rau cov dej khib nyiab, PAM nrog cationicity siab dua yuav tsum raug xaiv; Rau cov dej khib nyiab alkaline, PAM nrog cov anionicity siab dua yuav tsum raug xaiv. Tsis tas li ntawd, kom ua tiav cov nyhuv flocculation zoo dua, nws tseem tuaj yeem ua tiav los ntawm kev sib xyaw PAM nrog cov qib ionic sib txawv.
Degree ntawm Hydrolysis (rau APAM)
Qib ntawm hydrolysis ntawm PAM yog hais txog qib ntawm hydrolysis ntawm amide pawg ntawm nws cov saw molecular. Qib ntawm hydrolysis tuaj yeem faib ua qis, nruab nrab, thiab qib siab ntawm hydrolysis. PAM nrog cov qib sib txawv ntawm hydrolysis muaj cov khoom sib txawv thiab siv.
PAM nrog qib qis ntawm hydrolysis feem ntau yog siv rau thickening thiab stabilization. Nws tsub kom lub viscosity ntawm cov tshuaj, tso cai rau tshem tawm hais kom disperse zoo dua. Nws yog dav siv nyob rau hauv drilling kua, coatings, thiab cov zaub mov kev lag luam.
PAM nrog rau qib nruab nrab ntawm hydrolysis muaj cov nyhuv flocculation zoo thiab tsim nyog rau ntau yam kev kho dej zoo. Nws tuaj yeem sib sau cov khoom raug tshem tawm los tsim cov flocs loj dua los ntawm adsorption thiab bridging, yog li ua tiav sai. Nws yog dav siv hauv kev kho dej hauv nroog, kev kho dej khib nyiab, thiab sludge dehydration.
PAM nrog rau qib siab ntawm hydrolysis muaj zog adsorption thiab decolorization muaj peev xwm thiab feem ntau yog siv rau hauv kev luam ntawv thiab dyeing dej khib nyiab thiab lwm yam. Nws tuaj yeem nqus tau zoo thiab tshem tawm cov khoom tsis zoo hauv cov dej khib nyiab, xws li dyes, hnyav hlau, thiab cov organic teeb meem, los ntawm cov nqi thiab adsorption pawg ntawm cov saw hlau polymer.
Molecular Luj
Qhov hnyav molecular ntawm PAM hais txog qhov ntev ntawm nws cov saw hlau molecular. Feem ntau, qhov siab dua qhov hnyav molecular, qhov zoo dua cov nyhuv flocculation ntawm PAM. Qhov no yog vim qhov hnyav molecular PAM tuaj yeem ua kom zoo dua cov khoom tshem tawm, ua rau lawv sib sau ua ke los tsim cov flocs loj. Nyob rau tib lub sijhawm, siab molecular hnyav PAM muaj kev sib txuas zoo dua thiab kev sib txuas, uas tuaj yeem txhim kho lub zog thiab ruaj khov ntawm floc.
Hauv kev siv tswv yim, qhov hnyav molecular ntawm PAM siv rau kev kho dej hauv nroog thiab kev kho dej khib nyiab yuav tsum muaj ntau dua, feem ntau ntawm ntau lab mus rau kaum lab lab. Cov kev xav tau ntawm molecular hnyav ntawm PAM siv rau kev kho dej sludge dehydration kuj tsawg, feem ntau yog li ntawm lab mus rau kaum lab lab.
Hauv kev xaus, cov ntsuas xws li ionicity, hydrolysis degree, thiab qhov hnyav molecular yog qhov tseem ceeb uas cuam tshuam rau kev siv PAM hauv kev kho dej. Thaum xaiv PAM cov khoom, koj yuav tsum ua tib zoo xav txog cov dej zoo thiab xaiv raws li PAM cov kev qhia kom tau txais qhov zoo tshaj plaws flocculation effect, txhim kho efficiency, thiab zoo ntawm kev kho dej.
Post lub sij hawm: Jun-28-2024