Polyacrylamide(PAM) yog ib qho polymer hnyav molecular siab uas siv dav hauv cov txheej txheem kho dej hauv ntau qhov chaw. Nws muaj ntau yam hnyav molecular, ionicities, thiab cov qauv kom haum rau ntau qhov xwm txheej siv thiab tuaj yeem hloov kho rau cov xwm txheej tshwj xeeb. Los ntawm kev ua kom tsis muaj hluav taws xob thiab polymer adsorption thiab bridging, PAM tuaj yeem txhawb kev sib sau ua ke sai thiab kev tso dej ntawm cov khoom me me, txhim kho cov dej zoo. Tsab xov xwm no yuav nkag mus rau hauv cov ntawv thov tshwj xeeb thiab cov teebmeem ntawm PAM hauv kev kho dej hauv ntau qhov chaw.
Hauv kev kho dej phwj hauv tsev, PAM feem ntau yog siv rau kev ua kom cov dej phwj thiab cov dej ntws tawm. Los ntawm kev ua kom cov khoom siv hluav taws xob tsis muaj zog thiab siv cov teebmeem adsorbing bridging, PAM tuaj yeem ua kom cov khoom khov kho hauv dej sib sau ua ke sai dua los ua cov flocs ntawm cov khoom loj. Cov flocs no yooj yim rau kev daws thiab lim, yog li tshem tawm cov khoom tsis huv hauv dej thiab ua tiav lub hom phiaj ntawm kev ntxuav dej zoo. Kev siv PAM tuaj yeem txhim kho kev kho dej phwj thiab txo cov nqi kho.
Hauv kev ua ntawv, PAM feem ntau yog siv los ua cov khoom pab khaws cia, cov khoom pab lim, cov khoom tawg, thiab lwm yam. Los ntawm kev ntxiv PAM, qhov ceev ntawm kev khaws cia ntawm cov khoom sau thiab cov fibers zoo hauv daim ntawv tuaj yeem txhim kho, txo kev siv cov khoom siv raw, thiab txhim kho kev lim thiab kev ua haujlwm ntawm lub pulp. Tsis tas li ntawd, PAM tuaj yeem ua haujlwm ua cov khoom tsis yog silicon polymer stabilizer hauv cov txheej txheem bleaching, txhim kho qhov dawb thiab ci ntawm daim ntawv.
Hauv kev kho dej khib nyiab ntawm cov nroj tsuag cawv,PAMfeem ntau yog siv rau hauv cov txheej txheem dehydration sludge. Rau cov txheej txheem tsim cawv nrog cov khoom siv raw sib txawv thiab cov txheej txheem kho dej khib nyiab, nws yog qhov tseem ceeb heev rau xaiv cationic polyacrylamide nrog ionicity thiab molecular hnyav. Kev xaiv kev sim los ntawm kev sim beaker yog ib qho ntawm cov txheej txheem siv feem ntau.
Cov dej khib nyiab hauv cov zaub mov, nrog nws cov organic teeb meem siab thiab cov khoom khov kho, xav tau cov txheej txheem kho kom zoo. Cov txheej txheem ib txwm muaj xws li kev ua kom lub cev thiab kev ua kom lub cev tsis muaj zog. Txawm li cas los xij, hauv kev siv tiag tiag, cov polymer flocculants feem ntau tsim nyog rau kev ua kom cov dej ntws thiab lwm yam kev kho mob. Feem ntau ntawm cov flocculants siv hauv cov txheej txheem no yog cov khoom cationic polyacrylamide series. Kev xaiv cov khoom polyacrylamide tsim nyog yuav tsum xav txog qhov cuam tshuam ntawm kev hloov pauv huab cua (kub) rau kev xaiv flocculant, xaiv qhov hnyav molecular tsim nyog thiab tus nqi them raws li qhov loj me ntawm floc uas xav tau los ntawm cov txheej txheem kho, thiab lwm yam. Tsis tas li ntawd, yuav tsum tau saib xyuas cov teeb meem xws li cov txheej txheem thiab cov khoom siv xav tau thiab kev siv cov flocculants.
Hauv cov dej khib nyiab hluav taws xob thiab electroplating, PAM feem ntau yog siv uaCov khoom ua kom cov dej khovthiab cov dej nag. Los ntawm kev ua kom cov khoom siv hluav taws xob tsis muaj zog thiab siv cov teebmeem adsorbing bridging, PAM tuaj yeem sib sau ua ke sai sai thiab daws cov hlau hnyav hauv cov dej khib nyiab. Hauv cov txheej txheem no, feem ntau nws yog qhov tsim nyog los ntxiv sulfuric acid rau cov dej khib nyiab kom kho qhov pH rau 2-3 thiab tom qab ntawd ntxiv tus neeg sawv cev txo qis. Hauv lub tank tshuaj tiv thaiv tom ntej, siv NaOH lossis Ca (OH) 2 los kho qhov pH rau 7-8 los tsim Cr (OH) 3 precipitates. Tom qab ntawd ntxiv cov coagulant los nag thiab tshem tawm Cr (OH) 3. Los ntawm cov txheej txheem kho mob no, PAM pab txhim kho kev ua haujlwm ntawm kev kho dej khib nyiab hluav taws xob thiab electroplating thiab txo qhov kev puas tsuaj ntawm cov hlau hnyav rau ib puag ncig.
Lub sijhawm tshaj tawm: Lub Rau Hli-04-2024