PolyDADMAC, nws lub npe tag nrho yog polydimethyldiallylammonium chloride, yog cationic dej-soluble polymer uas tau siv dav hauv kev kho dej. Vim nws qhov tshwj xeeb cationic nqi ceev thiab cov dej solubility siab, PolyDADMAC yog cov coagulant muaj txiaj ntsig uas tuaj yeem tshem tawm turbidity, xim thiab lwm yam impurities hauv dej. Txawm li cas los xij, hauv kev siv tswv yim, nws feem ntau siv los ua ib qhoflocculantua ke nrog lwm cov coagulants los kho cov dej phwj tuaj.
Cov yam ntxwv thiab cov txheej txheem ntawm kev ua ntawm PolyDADMAC
PolyDADMAC sai sai adsorbs thiab aggregates tsis zoo nqi colloidal hais thiab tshem tawm cov khib nyiab hauv dej vim nws cov nqi cationic siab ceev. Nws cov txheej txheem ntawm kev ua haujlwm feem ntau yog ua raws li electrostatic attraction, uas ua rau cov khoom me me no agglomerate rau hauv cov khoom loj, yog li lawv tuaj yeem raug tshem tawm tau zoo thaum lub sij hawm los nag lossis lim dej tom ntej.
Flocculation mechanism ntawm PolyDADMAC
Flocculation yog ib qho ntawm cov kauj ruam hauv cov txheej txheem coagulation. Nws yog hais txog tus txheej txheem uas tus
"me me alum paj" tsim thaum lub sij hawm coagulation txheej txheem flocs nrog loj hais los ntawm adsorption, hluav taws xob neutralization, bridging thiab net-capture.
Hauv kev lag luam kho dej, adsorption thiab hluav taws xob nruab nrab yog classfied li coagulation, thaum bridging thiab net-capture yog cais raws li flocculation. Cov tshuaj sib xws yog hu ua coagulants thiab flocculants feem.
Nws feem ntau ntseeg tau tias PolyDADMAC muaj peb lub tswv yim ntawm kev ua: adsorption, hluav taws xob nruab nrab thiab kev sib txuas. Thawj ob yog cov tseem ceeb. Yog vim li cas PolyDADMAC tau muab cais ua coagulants. Txawm li cas los xij, feem ntau cov neeg suav tias coagulation thiab flocculation yog tib txoj kev, yog li PolyDADMAC tseem hu ua flocculant.
Hauv kev kho dej, PolyDADMAC feem ntau yog siv los ua flocculant los txhim kho cov dej zoo. Tshwj xeeb, cationic quaternary ammonium ntsev pawg ntawm PolyDADMAC tuaj yeem tsim electrostatic attraction nrog anionic tshem tawm hais los yog colloidal hais nyob rau hauv dej, ua rau neutralization, tsim flocs ntawm cov khoom loj thiab nyob rau hauv lawv. Cov flocs no raug tshuaj xyuas thaum lub sij hawm tom ntej sedimentation los yog filtration txheej txheem los ntxuav cov dej zoo.
Qhov zoo ntawm PolyDADMAC
Piv nrog cov tshuaj flocculants (alum, PAC, thiab lwm yam), PolyDADMAC muaj cov txiaj ntsig tseem ceeb hauv qab no:
Ua tau zoo: PolyDADMAC tuaj yeem tshem tawm cov impurities hauv dej sai sai thiab txhim kho cov dej zoo.
Yooj yim rau kev khiav lag luam: Nws siv tau yooj yim, tsuas yog ntxiv nws raws li qhov tsim nyog.
Sustainability: PolyDADMAC muaj kev ruaj ntseg zoo thiab tsis tawg yooj yim zoo li polyacrylamide.
Cov nyhuv flocculation muaj zog: Cov cationic quaternary ammonium ntsev pab pawg muab PDMDAAC muaj peev xwm flocculation muaj zog, yog li kho tau zoo ntau yam dej zoo;
Zoo ntsev tsis kam, acid thiab alkali tsis kam: PDMDAAC yog haum rau complex dej zoo tej yam kev mob, thiab nws tseem muaj ruaj khov flocculation kev kawm nyob rau hauv siab salinity, acidic los yog alkaline tej yam kev mob;
Tus nqi qis: PolyDADMAC muaj kev ua haujlwm siab flocculation thiab kev siv tsawg, uas tuaj yeem txo cov nqi kho dej.
Tsawg sludge: PolyDADMAC tsim cov sludge tsawg dua inorganic coagulants thiab flocculants thiab txuag nqi tom qab ua tiav.
PolyDADMAC ntau npaum thiab ceev faj
Thaum siv PolyDADMAC, cov txheej txheem kev khiav hauj lwm yuav tsum tau ua raws li nruj me ntsis kom ntseeg tau tias kev kho kom zoo thiab tsis txhob muaj kev phiv tshwm sim. Feem ntau, tom qab ntxiv flocculants xws li polyaluminium chloride, PolyDADMAC tau ntxiv kom ua tiav cov txiaj ntsig zoo tshaj plaws coagulation. Tsis tas li ntawd, qhov ntau npaum li cas yuav tsum tau kho kom haum raws li cov dej zoo thiab kev kho mob. Cov koob tshuaj uas tsim nyog tuaj yeem txiav txim siab los ntawm kev kuaj lub thawv.
Nyob rau hauv tag nrho,PolyDADMACplays lub luag haujlwm tseem ceeb hauv kev kho dej. Kev nkag siab tob txog nws cov khoom thiab cov ntawv thov yuav pab kom siv cov khoom no kom zoo dua qub thiab tiv thaiv ib puag ncig.
Post lub sij hawm: Nov-14-2024