Cov tshuaj lom neeg siv dab tsi rau flocculation?

Flocculationyog txheej txheem ua haujlwm hauv ntau yam kev lag luam, tshwj xeeb hauv kev kho dej dej thiab khib nyiab, rau kev txwv tsis pub muaj cov khoom thiab colloids rau hauv cov dej loj dua. Qhov no yooj yim txoj kev tshem tawm ntawm kev tshem tawm los ntawm kev ziab lossis ua haujlwm. Cov tshuaj tsis huv uas siv rau flocculation yog lub npe hu ua flocculants. Ib qho ntawm feem ntau cov feem ntau thiab dav siv flocculants yog polyacrylamide.

Polyacrylamideyog cov polymer synthesized los ntawm Acrylamide Monomers. Nws muaj nyob rau hauv ntau hom ntawv, suav nrog anionic, cationic, thiab tsis-ionic, txhua tus muaj cov ntawv thov tshwj xeeb. Qhov kev xaiv ntawm polyacrylamide yog nyob ntawm qhov xwm ntawm cov lus hais hauv cov dej thiab cov txiaj ntsig xav tau ntawm cov txheej txheem flocculation.

Anionic Polyacrylamide yog feem ntau siv nyob rau hauv kev kho mob ntawm wastewater muaj qhov kev raug them zoo xws li av nplaum thiab cov organic. Cationic Polyacrylamide, ntawm qhov tod tes, yog qhov ua tau zoo rau kev kho cov dej nrog cov khoom tsis zoo xws li cov khib nyiab tshem tawm thiab sludge. Tsis-ionic polyacrylamide tsis muaj tus nqi thiab haum rau flocculation ntawm ntau ntawm cov lus.

Polyacrylamide flocculants muaj nuj nqi los ntawm adsorbing mus rau saum npoo ntawm cov lus, ua tus txuas hniav nruab nrab ntawm lawv, thiab tsim cov kab ke loj dua. Lub resulting flocs yog yooj yim los khom lossis lim tawm hauv dej. Polyacrylamide yog nyiam rau nws qhov hnyav molecular, uas txhim kho nws cov nkauj av thiab flocculating lub peev xwm.

Sib nrug los ntawm polyacrylamide, lwm yam tshuaj lom neeg tseem siv rau flocculation, nyob ntawm cov kev xav tau tshwj xeeb ntawm cov txheej txheem kev kho mob. Inorganic flocculants, xws liAluminium Sulfate(Alum) thiab ferric chloride, feem ntau ua haujlwm hauv kev kho dej. Cov tshuaj chemical no hlau hlau hydroxide flocs thaum ntxiv rau dej, pab hauv kev tshem tawm cov khoom raug tshem tawm.

Alum, tshwj xeeb, tau siv dav siv rau dej kom meej rau ntau xyoo. Thaum ntxiv rau dej, Alum undergoes hydrolysis, kev sib sau aluminium hydroxide flocs uas ntxiab impurities. Cov flocs tuaj yeem tom qab txiav txim siab, thiab cov dej kom tau sib cais los ntawm cov av.

Flocculation yog kauj ruam tseem ceeb hauv cov txheej txheem dej kho mob, kom ntseeg tau qhov kev tshem tawm ntawm impurities thiab kev tsim cov dej huv. Kev xaiv ntawm flocculant nyob ntawm cov yam ntxwv xws li cov yam ntxwv ntawm cov dej yuav tsum tau kho, hom khoom siv tam sim no, thiab cov kev kho mob xav tau. Polyacrylamide thiab lwm cov flocculants ua si lub luag haujlwm tseem ceeb hauv kev txhim kho cov dej thiab cov dej kom muaj txiaj ntsig zoo thiab muaj txiaj ntsig zoo rau cov dej rau ntau lub hom phiaj.