Kev xaiv ntawm polyacrylamide feem ntau yog raws cov cim tseem ceeb xws li molecular hnyav, hydrolysis degree thiab ionicity. Cov ntsuas no ncaj qha cuam tshuam rau kev ua tau zoo thiab daim ntawv thov ua haujlwm ntawm polyacrylamide.
Molecular hnyav
Qhov hnyav molecular ntawm polyacrylamide yog qhov taw qhia tseem ceeb los ntsuas nws cov kev ua tau zoo. Qhov siab dua cov molecular hnyav, ntev ntev cov molecular saw thiab lub zog flocculation kev ua tau zoo. Cov kev faib tawm tshwj xeeb yog raws li hauv qab no:
Tsawg molecular hnyav (<1 million): suitable for scenarios with low viscosity requirements.
Nruab nrab molecular hnyav (1 lab rau 10 lab): feem ntau siv hauv kev kho cov dej.
Siab molecular hnyav (10 lab mus rau 15 lab): siv rau kev ua haujlwm zoo flocculation.
Ultra-high molecular weight (>15 lab): Haum rau cov kev xav tau tshwj xeeb, xws li cov ntxhia ua.
Hydrolysis Qib thiab ionicity
Hydrolysis ua cai: hais txog kev faib ua feem ntawm cov pab pawg hauv polyacrylamide uas yog hydrolyzed los ua cov pab pawg carboxyl. Cov khoom lag luam uas muaj mob hydrolysis loj yog qhov tsim nyog rau kev kho cov dej lub cev uas muaj cov tshuaj sib xyaw ntau.
Ionicity: piav qhia txog tus nqi zog ntawm cationic polyacrylamide. Cov khoom lag luam uas muaj ionicity siab muaj teeb meem ntau dua los ntawm kev kho cov teeb meem organic, thaum tsis muaj ionicity yog haum rau cov xwm txheej nrog cov kev xav tau qis.
Txoj kev xaiv
Xaiv raws li daim ntawv thov cov xwm txheej:
Wastewater treatment: High molecular weight polyacrylamide (>10 lab) yog qhov tsim nyog rau kev kho kom muaj kev kho kom muaj cov lej uas raug tshem tawm ntau.
Petrochemical Kev Lag Luam: Luv Molecular hnyav (7 lab mus rau 10 lab) polyacrylamide yog qhov haum rau kev kho kom dej khib nyiab thaum lub roj tawm.
Kev lag luam kev lag luam: Polyacrylamide nrog lub cev hnyav ntawm 7 lab thiab 12 lab yog siv rau pulp ua los txhim kho lub zog thiab cov ntawv zoo.
Xaiv raws li dej ua tau zoo:
Qhov chaw ntsuas kub tsawg: Xaiv cov khoom uas muaj qhov hnyav medolyrees thiab muaj qhov hnyav}%, uas haum rau cov dej phwj tuaj tsawg.
Qhov chaw ntsuas kub li qub: xaiv cov khoom raws li cov yam ntxwv dej zoo, xws li cationic polyacrylamide rau cov dej phwj tuaj los ntawm cov dej pheeb suab.
Kev kub siab ib puag ncig: xaiv cov khoom siv hluav taws xob ntau ntxiv nrog cov peev xwm tiv thaiv lub siab, xws li cov dej nyab sib txuas.
