Mechanism thiab kev siv ntawm PolyDADMAC hauv kev kho dej

Polydiallylddimethylammonium chloride(PolyDADMAC) yog siv dav siv cationic polymer flocculant thiab ua lub luag haujlwm tseem ceeb hauv kev kho dej. PDADMAC feem ntau yog siv los ua flocculant thiab qee zaum sib xyaw nrog algaecides. Kab lus no yuav piav qhia txog qhov zoo thiab cov txiaj ntsig ntawm kev siv ntawm PolyDADMAC los ntawm cov yam ntxwv ntawm nws cov txheej txheem ntawm kev nqis tes ua, daim ntawv thov scenarios thiab cov tswv yim tshwj xeeb rau kev txhim kho kev kho dej.

Cov yam ntxwv tseem ceeb ntawm PolyDADMAC

PolyDADMAC yog lub siab molecular polymer nrog ntau pawg cationic hauv nws cov qauv molecular, uas tuaj yeem nqus tau cov khoom tshem tawm thiab cov colloids hauv dej. Nws cov yam ntxwv tseem ceeb muaj xws li:

1. Muaj zog cationicity: Nws tuaj yeem cuam tshuam qhov cuam tshuam tsis zoo ntawm cov khoom hauv dej.

2. Zoo solubility dej: Nws yooj yim rau yaj hauv dej thiab yooj yim rau kev thov ntawm qhov chaw.

3. Tshuaj stability: Nws tuaj yeem tswj hwm kev ua haujlwm siab flocculation hauv cov pH sib txawv, oxidizing ib puag ncig thiab cov neeg kho tshuab siab shear ib puag ncig. PDADMAC muaj zog chlorine tsis kam.

4. Tsawg toxicity: Nws ua tau raws li cov qauv kev tiv thaiv ib puag ncig thiab tsim nyog rau kev kho dej haus.

Mechanism ntawm kev txiav txim ntawm PolyDADMAC hauv kev kho dej

Nws destabilizes tshem tawm hais thiab tsis zoo nqi aqueous tov tshuaj nyob rau hauv dej thiab flocculates lawv los ntawm hluav taws xob neutralization thiab adsorption bridging. Nws muaj cov txiaj ntsig tseem ceeb hauv kev decolorization, thiab tshem tawm cov organic teeb meem.

PolyDADMACtxhim kho kev kho dej efficiency los ntawm cov txheej txheem hauv qab no:

1. Them neutralization

Cov khoom raug tshem tawm thiab cov colloids hauv dej feem ntau muaj cov nqi tsis zoo, uas ua rau muaj kev sib tshuam ntawm cov khoom thiab ua rau nws nyuaj rau kev daws teeb meem. Cov pab pawg cationic ntawm PolyDADMAC tuaj yeem tshem tawm cov nqi tsis zoo, txo cov electrostatic repulsion ntawm cov khoom, thiab txhawb cov particle coagulation.

2. Kev sib txuas lus

Qhov ntev-chain molecular qauv ntawm high-viscosity PolyDADMAC enables nws los tsim ib tug "choj" ntawm ntau yam, aggregating me me hais rau hauv loj flocs, yog li txhim kho sedimentation efficiency.

3. Txhim kho cov txiaj ntsig ntawm kev ntes

PolyDADMAC tuaj yeem ntxiv dag zog rau "net qauv" tsim los ntawm inorganic coagulant hauv kev kho dej kom zoo ntes cov teeb meem raug tshem tawm, tshwj xeeb tshaj yog nyob rau hauv siab turbidity los yog dej qias neeg heev.

Daim ntawv thov scenarios ntawm PolyDADMAC

1. Kev kho dej haus

PolyDADMAC yog siv los ua flocculant kom tshem tawm turbidity, tshem tawm cov khoom thiab cov organic teeb meem los ntawm cov dej haus. Nyob rau tib lub sijhawm, vim nws cov tshuaj lom neeg tsawg thiab kev tiv thaiv ib puag ncig, nws tuaj yeem ua tau raws li cov qauv kev nyab xeeb dej haus.

2. Kev kho dej khib nyiab

Hauv kev kho dej khib nyiab hauv nroog thiab kev lag luam, PolyDADMAC feem ntau siv los txhim kho sludge dewatering kev ua tau zoo, txo cov dej noo ntawm cov av nkos, thiab txo cov nqi khiav lag luam.

3. Muaj dej huv huv

Hauv lub zog, petrochemical thiab lwm yam kev lag luam, PolyDADMAC yog siv rau kev ua kom huv ntawm cov dej hauv kev lag luam xws li dej txias thiab boiler dej kom txo cov scaling thiab corrosion.

4. Papermaking thiab textile kev lag luam

PolyDADMAC yog siv los ua kev tuav pov hwm thiab pom kev pab txhawm rau txhim kho tus nqi khaws cia ntawm fibers thiab muab tub lim hauv cov txheej txheem papermaking, thaum txo cov ntsiab lus ntawm cov teeb meem tshem tawm hauv cov dej khib nyiab.

Cov tswv yim los txhim kho kev kho dej nrog PolyDADMAC

1. Optimizing ntau npaum li cas tswj

Qhov ntau npaum li cas ntawm PolyDADMAC yog ze ze rau qhov concentration, particle loj tis thiab cov yam ntxwv ua paug ntawm cov khoom raug tshem tawm hauv dej. Kev ua kom zoo tshaj qhov ntau npaum li cas los ntawm kev kuaj lub thawv tuaj yeem ua rau nws cov nyhuv flocculation thaum tsis txhob siv ntau dhau uas ua rau cov nqi nce ntxiv lossis cov pa phem hauv dej.

2. Synergistic nyhuv nrog inorganic flocculants

Kev siv PolyDADMAC ua ke nrog inorganic flocculants (xws li polyaluminium chloride thiab aluminium sulfate) tuaj yeem txhim kho cov nyhuv flocculation. Tom qab PolyDADMAC neutralizes tus nqi saum npoo ntawm cov khoom, cov inorganic flocculants ntxiv tsim loj flocs los ntawm adsorption thiab sedimentation.

3. Txhim kho automation theem ntawm cov txheej txheem kho dej

Nrog kev pab los ntawm automated tswj systems, lub sij hawm saib xyuas thiab kev hloov kho ntawm PolyDADMAC ntau npaum li cas tuaj yeem ua tiav los tiv thaiv cov kev hloov pauv hauv kev kho mob los ntawm cov dej tsis zoo.

4. Optimize stirring tej yam kev mob

Tom qab ntxiv PolyDADMAC, tsim nyog stirring siv thiab sij hawm yuav txhim khu nws dispersibility thiab flocculation efficiency. Kev nplawm ntau dhau tuaj yeem ua rau flocs tawg, thaum tsis txaus stirring yuav txo qhov sib xyaw.

5. Kho tus nqi pH

PolyDADMAC ua tau zoo tshaj plaws nyob rau hauv nruab nrab tsis muaj zog alkaline tej yam kev mob. Thaum kho cov dej acidic lossis alkaline heev, kho cov pH tus nqi ntawm lub cev dej tuaj yeem txhim kho nws cov nyhuv flocculation.

Qhov zoo ntawm PolyDADMAC

1. Kev ua haujlwm siab: Kev tsim sai ntawm flocs los txhim kho cov khoom ua kua sib cais efficiency.

2. Kev siv dav dav: Muaj feem xyuam rau ntau yam dej zoo, tshwj xeeb tshaj yog cov dej uas muaj turbidity siab thiab siab organic ntsiab lus.

3. Kev tiv thaiv ib puag ncig: Tsawg toxicity thiab biodegradability, raws li kev tiv thaiv ib puag ncig.

Raws li qhov ua tau zoo heevflocculant, PolyDADMAC muaj cov ntawv thov tseem ceeb hauv kev kho dej vim nws muaj zog cationicity, dej solubility zoo thiab siv dav. Los ntawm cov txheej txheem tsim nyog kom zoo thiab cov tswv yim ua haujlwm, nws txoj kev kho kom zoo hauv kev ua kom huv ntawm cov dej haus, dej phwj tuaj thiab dej ua haujlwm tuaj yeem txhim kho ntxiv.