Cov tshuaj twg siv rau Flocculation?

Kev sib xyaw ua keyog ib qho txheej txheem siv hauv ntau yam lag luam, tshwj xeeb tshaj yog hauv kev kho dej thiab kev kho dej khib nyiab, los sib sau ua ke cov khoom me me thiab cov colloids rau hauv cov khoom loj dua. Qhov no ua rau lawv raug tshem tawm los ntawm kev tso dej lossis kev lim dej. Cov tshuaj siv rau flocculation hu ua flocculants. Ib qho ntawm cov flocculants feem ntau thiab siv dav yog polyacrylamide.

Polyacrylamideyog ib qho polymer uas ua los ntawm acrylamide monomers. Nws muaj nyob rau hauv ntau hom, suav nrog anionic, cationic, thiab non-ionic, txhua tus muaj cov ntawv thov tshwj xeeb. Kev xaiv ntawm polyacrylamide hom nyob ntawm qhov xwm txheej ntawm cov khoom me me hauv dej thiab qhov tshwm sim xav tau ntawm cov txheej txheem flocculation.

Anionic polyacrylamide muaj cov nqi tsis zoo thiab feem ntau siv rau hauv kev kho cov dej khib nyiab uas muaj cov khoom me me xws li av nplaum thiab cov organic. Cationic polyacrylamide, ntawm qhov tod tes, muaj cov nqi zoo thiab zoo rau kev kho cov dej nrog cov khoom me me xws li cov khoom dai thiab cov sludge. Non-ionic polyacrylamide tsis muaj nqi thiab tsim nyog rau kev sib sau ua ke ntawm ntau yam khoom me me.

Cov tshuaj flocculants Polyacrylamide ua haujlwm los ntawm kev nqus rau ntawm qhov chaw ntawm cov khoom me me, tsim cov choj ntawm lawv, thiab tsim cov pob zeb loj dua. Cov flocs uas tshwm sim yooj yim dua los daws lossis lim tawm ntawm dej. Polyacrylamide yog qhov nyiam rau nws qhov hnyav molecular siab, uas ua rau nws cov peev xwm txuas thiab flocculating zoo dua.

Sib nrug ntawm polyacrylamide, lwm yam tshuaj kuj tseem siv rau kev ua kom cov dej noo noo, nyob ntawm qhov xav tau tshwj xeeb ntawm cov txheej txheem kho mob. Cov tshuaj ua kom cov dej noo noo tsis sib xws, xws liAluminium Sulfate(alum) thiab ferric chloride, feem ntau siv rau hauv kev kho dej. Cov tshuaj no tsim cov hlau hydroxide flocs thaum ntxiv rau hauv dej, pab tshem tawm cov khoom me me uas raug tshem tawm.

Tshwj xeeb, alum tau siv dav rau kev ua kom dej ntshiab tau ntau xyoo. Thaum ntxiv rau hauv dej, alum yuav dhau los ua hydrolysis, tsim cov aluminum hydroxide flocs uas ntes cov khoom tsis huv. Cov flocs tuaj yeem poob qis, thiab cov dej ntshiab tuaj yeem cais tawm ntawm cov av noo.

Kev ua kom cov dej ntws tawm yog ib kauj ruam tseem ceeb hauv cov txheej txheem kho dej, kom ntseeg tau tias tshem tawm cov khoom tsis huv thiab tsim cov dej huv. Kev xaiv cov tshuaj flocculant nyob ntawm cov yam ntxwv xws li cov yam ntxwv ntawm cov dej uas yuav tsum tau kho, hom khoom me me uas muaj, thiab cov txiaj ntsig kho mob xav tau. Polyacrylamide thiab lwm yam tshuaj flocculants ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm cov dej thiab cov dej khib nyiab, pab txhawb rau kev muab dej nyab xeeb thiab haus tau rau ntau yam hom phiaj.