Dab tsi tshuaj siv rau Flocculation?

Flocculationyog cov txheej txheem ua haujlwm nyob rau hauv ntau yam lag luam, tshwj xeeb tshaj yog hauv kev kho dej thiab kev kho dej khib nyiab, kom sib sau cov khoom tshem tawm thiab cov colloids rau hauv cov khoom loj floc.Qhov no pab txhawb lawv tshem tawm los ntawm sedimentation los yog pom.Cov tshuaj siv rau flocculation yog hu ua flocculants.Ib qho ntawm feem ntau thiab dav siv flocculants yog polyacrylamide.

Polyacrylamideyog ib tug polymer synthesized los ntawm acrylamide monomers.Nws muaj nyob rau hauv ntau yam ntaub ntawv, xws li anionic, cationic, thiab non-ionic, txhua yam muaj kev siv tshwj xeeb.Kev xaiv ntawm hom polyacrylamide nyob ntawm qhov xwm txheej ntawm cov khoom hauv dej thiab qhov xav tau ntawm cov txheej txheem flocculation.

Anionic polyacrylamide yog qhov tsis zoo thiab feem ntau siv los kho cov dej khib nyiab uas muaj cov khoom zoo xws li av nplaum thiab cov khoom organic.Cationic polyacrylamide, ntawm qhov tod tes, yog qhov zoo thiab zoo rau kev kho dej nrog cov khoom tsis zoo xws li tshem tawm cov khib nyiab thiab cov sludge.Non-ionic polyacrylamide tsis muaj nqi thiab yog tsim rau flocculation ntawm ntau yam hais.

Polyacrylamide flocculants ua haujlwm los ntawm adsorbing mus rau saum npoo ntawm cov khoom, tsim cov txuas txuas ntawm lawv, thiab tsim kom muaj kev sib sau loj dua.Cov txiaj ntsig flocs yooj yim dua los daws lossis lim tawm ntawm cov dej.Polyacrylamide yog qhov nyiam rau nws qhov hnyav molecular, uas txhim kho nws txoj kev txuas thiab flocculating peev xwm.

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

Alum, tshwj xeeb tshaj yog, tau siv dav rau kev qhia dej rau ntau xyoo.Thaum ntxiv rau dej, alum tau dhau los ua hydrolysis, tsim aluminium hydroxide flocs uas ntxiab impurities.Tom qab ntawd cov flocs tuaj yeem khom, thiab cov dej ntshiab tuaj yeem sib cais los ntawm cov sediment.

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