Cov polymers twg siv ua Flocculants?

Ib theem tseem ceeb hauv cov txheej txheem kho dej khib nyiab yog kev sib xyaw thiab kev sib sau ua ke ntawm cov khoom khov kho, ib qho txheej txheem uas feem ntau siv cov tshuaj hu ua flocculants. Hauv qhov no, polymers ua lub luag haujlwm tseem ceeb, yog li PAM, polyamines. Tsab xov xwm no yuav nkag mus rau hauv cov txheej txheem sib xwscov tshuaj polymer flocculants, daim ntawv thov cov polymers ua flocculants hauv kev kho dej khib nyiab, thiab cov haujlwm tom qab lawv.

Cov polymer flocculants feem ntau siv yog dab tsi?

Cov polymer flocculants uas siv ntau suav nrog cationic polymers, anionic polymers thiab nonionic polymers. Cov polymers no tuaj yeem tau los ntawm ntau txoj kev sib txawv thiab muaj cov qauv cationic thiab branched sib txawv. Hauv kev siv ua haujlwm, nws yog qhov tsim nyog los xaiv cov polymer flocculants tsim nyog raws li cov xwm txheej tshwj xeeb ntawm cov dej khib nyiab kom tau txais cov txiaj ntsig zoo tshaj plaws. PAM, polyDADMAC, yog siv dav hauv kev kho dej khib nyiab hauv kev lag luam. Polyacrylamide yog cov flocculant siv dav tshaj plaws hauv ntiaj teb. Cov polymers soluble hauv dej no yog synthetic thiab tuaj yeem tsim tshwj xeeb rau cov ntawv thov tshwj xeeb los ntawm ntau qhov hnyav molecular, viscosities, sib txawv charge degrees, sib txawv daim ntawv xws li cov khoom me me, emulsions, thiab lwm yam. PolyDADMAC yog siv dav hauv dej kais, dej nyoos flocculation, sludge dehydration, kev lag luam ntawv thiab kev lag luam luam ntawv thiab zas xim.

Kev siv cov flocculants hauv kev kho dej khib nyiab

Lub hom phiaj tseem ceeb ntawm kev kho dej khib nyiab yog tshem tawm cov pa phem xws li cov khoom khov kho, cov organic uas yaj thiab cov khoom me me ntawm cov dej kom zoo dua qub. Hauv cov txheej txheem no, cov flocculants ua lub luag haujlwm tseem ceeb. Los ntawm kev siv cov flocculants, cov khoom me me thiab cov khoom me me hauv dej tuaj yeem ua rau sib sau ua ke rau hauv cov flocs loj dua, uas tuaj yeem tshem tawm yooj yim dua los ntawm kev tso dej lossis lim dej. Qhov no tsis yog tsuas yog txhim kho cov dej zoo xwb, tab sis kuj txhim kho kev kho mob thiab txo cov nqi kho mob.

Vim li cas Polymers thiaj ua tau flocculants?

Cov polymers siv tau ua cov flocculants vim lawv qhov hnyav molecular siab thiab ntau ceg. Cov yam ntxwv no tso cai rau cov polymer kom nqus tau zoo dua rau ntawm cov khoom me me, tsim cov flocs loj dua uas tuaj yeem poob sai. Tsis tas li ntawd, cov polymers tuaj yeem tshem tawm cov electrostatic repulsion ntawm cov khoom me me los ntawm kev ua kom tsis muaj zog, ua rau cov khoom me me los ze thiab sib sau ua ke.

Lub mechanism ntawm kev ua haujlwm ntawm cov polymers hauv kev kho dej khib nyiab

Cov txheej txheem ua haujlwm ntawm cov polymers ua cov flocculants tuaj yeem muab faib ua peb kauj ruam: kev tshem tawm cov nqi, kev sib txuas ntawm cov flocculation thiab kev ntes cov ntaub ntawv. Ua ntej, cov polymer tshem tawm qhov electrostatic repulsion ntawm cov khoom me me los ntawm kev tshem tawm cov nqi, cia cov khoom me me los ze. Cov polymer tom qab ntawd txuas cov khoom me me ua ke los tsim cov flocs loj dua los ntawm kev sib txuas ntawm cov flocculation. Thaum kawg, cov flocs no tau sib sau ua ke thiab nyob hauv dej los ntawm kev ua haujlwm ntawm cov ntaub ntawv.

Cov yam ntxwv cuam tshuam rau kev ua haujlwm ntawm Polymers hauv kev kho cov dej khib nyiab

Muaj ntau yam uas cuam tshuam rau qhov ua tau zoo ntawm kev kho cov dej khib nyiab polymer, suav nrog hom polymer, koob tshuaj, pH tus nqi, kub, qhov ceev ntawm kev sib tov, thiab lwm yam. Ntawm lawv, hom polymer thiab koob tshuaj yog ib qho tseem ceeb tshaj plaws. Cov polymers sib txawv muaj cov yam ntxwv sib txawv ntawm kev them nqi thiab kev faib tawm qhov hnyav molecular, yog li nws yog qhov tsim nyog los xaiv hom polymer thiab koob tshuaj rau cov dej khib nyiab sib txawv kom ua tiav qhov kev kho mob zoo tshaj plaws. Tsis tas li ntawd, cov yam xws li pH tus nqi, kub, thiab qhov ceev ntawm kev sib tov kuj tseem yuav cuam tshuam rau qhov ua tau zoo ntawm kev kho mob, thiab cov xwm txheej zoo tshaj plaws yuav tsum tau txiav txim siab los ntawm kev sim.

Cov polymers ua lub luag haujlwm tseem ceeb ua cov flocculants hauv kev kho dej khib nyiab. Kev nkag siab tob txog cov txheej txheem ntawm kev ua haujlwm thiab cov yam ntxwv cuam tshuam ntawm cov polymers tuaj yeem muab kev txhawb nqa theoretical tseem ceeb thiab kev taw qhia ua tau zoo rau kev ua kom zoo dua cov txheej txheem kho dej khib nyiab thiab txhim kho kev kho kom zoo. Yav tom ntej, nrog rau kev txhim kho tas mus li ntawm cov kev cai tiv thaiv ib puag ncig thiab kev nce qib tas mus li ntawm kev tshawb fawb thiab thev naus laus zis, nws ntseeg tau tias kev siv cov polymers hauv kev kho dej khib nyiab yuav dav dua thiab tob dua.