Ukungaqondani okuvamile lapho ukhetha i-PAM

I-Polyacrylamide(PAM), njenge-polymer flocculant esetshenziswa kakhulu, isetshenziswa kabanzi ezimweni ezahlukene zokwelashwa kwendle. Kodwa-ke, abasebenzisi abaningi baye bawela ekungaqondani okuthile ngesikhathi senqubo yokukhetha nokusebenzisa. Lesi sihloko sihlose ukwembula lokhu kungaqondani nokunikeza ukuqonda kanye neziphakamiso ezifanele.

Ukungaqondi kahle 1: Uma isisindo sama-molecule sikhulu, kulapho ukusebenza kahle kwe-flocculation kuphakama khona.

Lapho bekhetha i-polyacrylamide, abantu abaningi bacabanga ukuthi imodeli enesisindo esikhulu sama-molecule kumele ibe nokusebenza kahle kwe-flocculation okuphezulu. Kodwa eqinisweni, kunezinhlobo eziningi ze-polyacrylamide, ezifanele izimo ezahlukene zekhwalithi yamanzi. Uhlobo lwamanzi angcolile akhiqizwa amafektri ezimbonini ezahlukene luhlukile. Inani le-pH kanye nokungcola okuthile kwezimfanelo zamanzi ezahlukene kuhluke kakhulu. Kungaba yi-acidic, i-alkaline, ingathathi hlangothi, noma kuqukethe uwoyela, izinto eziphilayo, umbala, i-sediment, njll. Ngakho-ke, kunzima ngohlobo olulodwa lwe-polyacrylamide ukuhlangabezana nazo zonke izidingo zokwelashwa kwamanzi angcolile. Indlela efanele iwukukhetha imodeli kuqala ngokusebenzisa izivivinyo, bese wenza izivivinyo zomshini ukuze kunqunywe umthamo ofanele ukuze kufezwe umphumela ongabizi kakhulu.

Ukungaqondi kahle 2: Uma ukuhlushwa kokucushwa kuphakeme, kungcono

Lapho belungiselela izixazululo ze-polyacrylamide, abasebenzisi abaningi bakholelwa ukuthi uma ukugcwala kuphakeme, kulapho izakhiwo zokugcwala zingcono khona. Kodwa-ke, lo mbono awulungile. Eqinisweni, ukugcwala kokucushwa kwe-PAM kufanele kunqunywe ngokwezimo ezithile zokukhucululwa kwamanzi kanye nodaka. Ngokuvamile, izixazululo ze-PAM ezinezinga elingu-0.1%-0.3% zifanelekela ukukhucululwa kwamanzi kanye nodaka, kanti ukugcwala kokususwa kwamanzi kodaka lukamasipala nolwezimboni kungu-0.2%-0.5%. Uma kunokungcola okuningi kakhulu emanzini angcolile, ukugcwala kwe-PAM kungadinga ukukhushulwa ngendlela efanele. Ngakho-ke, ukugcwala kokucushwa okufanelekile kufanele kunqunywe ngokuhlolwa ngaphambi kokusetshenziswa ukuqinisekisa umphumela omuhle kakhulu wokusetshenziswa.

Ukungaqondi kahle 3: Uma isikhathi sokuncibilika nokuxubha siqhubeka isikhathi eside, kungcono

I-Polyacrylamide iyinhlayiya emhlophe ekristalu edinga ukuncibilikiswa ngokuphelele ukuze kufezwe umphumela omuhle kakhulu. Abasebenzisi abaningi bacabanga ukuthi uma isikhathi sokuncibilika nokuxubha isikhathi eside, kungcono, kodwa empeleni akunjalo. Uma isikhathi sokuxubha side kakhulu, sizobangela ukuphuka okuncane kwe-PAM molecular chain futhi sithinte ukusebenza kwe-flocculation. Ngokuvamile, isikhathi sokuncibilika nokuxubha akufanele sibe ngaphansi kwemizuzu engama-30 futhi kufanele sandiswe ngokufanele lapho izinga lokushisa liphansi ebusika. Uma isikhathi sokuncibilika nokuxubha sifushane kakhulu, i-PAM ngeke incibilikiswe ngokuphelele, okuzoholela ekungakwazini ukwenza ngokushesha ukuxubha emanzini angcolile. Ngakho-ke, abasebenzisi kufanele baqinisekise ukuthi isikhathi esanele sokuncibilika nesikhathi sokuxubha lapho beyisebenzisa ukuqinisekisa umphumela we-flocculation we-PAM.

Ukungaqondi kahle 4: I-Ionicity/Ionic degree yiyona kuphela isisekelo sokukhetha

Njengenye yezinkomba ezibalulekile ze-polyacrylamide, i-ionicity ibhekisela eshajeni ye-ionic engemihle neyinhle kanye nobuningi bayo beshaja. Abantu abaningi banaka kakhulu i-ionicity lapho bethenga, becabanga ukuthi uma iphakeme kungcono. Kodwa empeleni, izinga le-ionicity lihlobene nosayizi wesisindo sama-molecule. Uma i-ionicity iphakeme, isisindo sama-molecule siba sincane, futhi intengo iyanda. Enqubweni yokukhetha, ngaphezu kwe-ionicity, ezinye izinto kudingeka zicatshangelwe, njengezimo ezithile zekhwalithi yamanzi, izidingo zomphumela we-flocculation, njll. Ngakho-ke, imodeli ayikwazi ukukhethwa ngokusekelwe kuphela ezingeni le-ionization. Ukuhlolwa okwengeziwe kuyadingeka ukuze kutholakale imodeli edingekayo.

Njengo-i-flocculant, i-polyacrylamide idlala indima ebalulekile embonini yokwelapha amanzi. Uma udinga ukukhetha imininingwane ekufanele, ngicela ungithinte.