PolyDADMAC, uas nws lub npe tag nrho yog polydimethyldiallylammonium chloride, yog ib qho cationic dej-soluble polymer uas siv dav hauv kev kho dej. Vim nws qhov tshwj xeeb cationic them ceev thiab siab dej solubility, PolyDADMAC yog ib qho coagulant zoo uas tuaj yeem tshem tawm cov turbidity, xim thiab lwm yam impurities hauv dej. Txawm li cas los xij, hauv kev siv tswv yim, nws feem ntau yog siv ua ib qhocov khoom ua kom cov dej khovua ke nrog lwm cov coagulants los kho cov dej phwj hauv kev lag luam.
Cov yam ntxwv thiab txoj kev ua haujlwm ntawm PolyDADMAC
PolyDADMAC nqus thiab sib sau ua ke cov khoom me me uas muaj cov nqi tsis zoo thiab cov khoom uas raug tshem tawm hauv dej vim nws muaj cov nqi cationic siab. Nws txoj kev ua haujlwm feem ntau yog raws li electrostatic attraction, uas ua rau cov khoom me me no sib sau ua ke ua cov khoom loj, yog li lawv tuaj yeem raug tshem tawm zoo thaum lub sijhawm los nag lossis cov txheej txheem lim dej tom qab.
Lub tshuab flocculation ntawm PolyDADMAC
Flocculation yog ib qho ntawm cov kauj ruam hauv cov txheej txheem coagulation. Nws hais txog cov txheej txheem uas
"paj alum me me" uas tsim thaum lub sijhawm coagulation tsim cov flocs nrog cov khoom loj dua los ntawm kev nqus, hluav taws xob neutralization, bridging thiab net-capture.
Hauv kev lag luam kho dej, kev nqus thiab kev ua kom tsis muaj hluav taws xob raug cais ua coagulation, thaum kev txuas thiab kev ntes net raug cais ua flocculation. Cov tshuaj sib xws hu ua coagulants thiab flocculants.
Feem ntau ntseeg tias PolyDADMAC muaj peb txoj hauv kev ua haujlwm: kev nqus, kev ua kom tsis muaj hluav taws xob thiab kev txuas. Ob qho thawj zaug yog cov tseem ceeb. Yog vim li cas PolyDADMAC thiaj li raug cais ua cov coagulants. Txawm li cas los xij, feem ntau cov neeg suav tias coagulation thiab flocculation yog tib txoj kev, yog li PolyDADMAC kuj tseem hu ua flocculant.
Hauv cov txheej txheem kho dej, PolyDADMAC feem ntau yog siv ua flocculant los txhim kho cov dej zoo. Tshwj xeeb, cov ntsev cationic quaternary ammonium ntsev ntawm PolyDADMAC tuaj yeem tsim cov electrostatic attraction nrog cov khoom me me anionic lossis cov khoom me me colloidal hauv dej, ua rau neutralization, tsim cov flocs ntawm cov khoom loj dua thiab solidify lawv. Cov flocs no raug tshuaj xyuas tawm thaum lub sijhawm tom qab sedimentation lossis filtration txheej txheem los ntxuav cov dej zoo.
Cov txiaj ntsig ntawm PolyDADMAC
Piv nrog cov flocculants ib txwm muaj (alum, PAC, thiab lwm yam), PolyDADMAC muaj cov txiaj ntsig tseem ceeb hauv qab no:
Zoo: PolyDADMAC tuaj yeem tshem tawm cov khoom tsis huv hauv dej sai sai thiab txhim kho cov dej zoo.
Yooj yim rau kev khiav lag luam: Nws siv yooj yim, tsuas yog ntxiv nws nyob rau hauv cov xwm txheej tsim nyog.
Kev Ruaj Ntseg: PolyDADMAC muaj kev ruaj khov zoo thiab tsis tawg yooj yim zoo li polyacrylamide.
Cov nyhuv flocculation muaj zog: Cov ntsev cationic quaternary ammonium ntsev muab PDMDAAC muaj peev xwm flocculation muaj zog, yog li ntawd kho tau ntau yam dej zoo;
Kev tiv thaiv ntsev zoo, tiv thaiv kua qaub thiab alkali: PDMDAAC tsim nyog rau cov dej zoo nyuaj, thiab nws tseem muaj kev ua haujlwm flocculation ruaj khov nyob rau hauv cov dej ntsev siab, acidic lossis alkaline;
Tus nqi qis: PolyDADMAC muaj kev ua haujlwm siab ntawm kev sib xyaw ua ke thiab cov tshuaj tsawg, uas tuaj yeem txo cov nqi kho dej.
Cov sludge tsawg: PolyDADMAC tsim cov sludge tsawg dua li cov inorganic coagulants thiab flocculants thiab txuag cov nqi tom qab ua tiav.
Cov koob tshuaj thiab kev ceev faj ntawm PolyDADMAC
Thaum siv PolyDADMAC, cov txheej txheem ua haujlwm yuav tsum tau ua raws li nruj me ntsis kom ntseeg tau tias muaj txiaj ntsig zoo tshaj plaws thiab zam kev phiv. Feem ntau, tom qab ntxiv cov flocculants xws li polyaluminium chloride, PolyDADMAC raug ntxiv rau kom ua tiav qhov zoo tshaj plaws coagulation effect. Tsis tas li ntawd, cov koob tshuaj yuav tsum tau kho kom haum raws li qhov zoo ntawm dej thiab kev kho mob. Cov koob tshuaj tsim nyog tuaj yeem txiav txim siab los ntawm kev sim lub thawv.
Tag nrho hauv txhua yam,PolyDADMACua lub luag haujlwm tseem ceeb hauv kev kho dej. Kev nkag siab tob txog nws cov khoom thiab kev siv yuav pab siv cov khoom no kom zoo dua los txhim kho dej zoo thiab tiv thaiv ib puag ncig.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-14-2024