Ukungaqondi kahle okuvamile lapho ukhetha i-PAM

I-Polyacrylamide(PAM), njenge-polymer flocculant evame ukusetshenziswa, isetshenziswa kabanzi ezimeni ezahlukahlukene zokuhlanza indle. Nokho, abasebenzisi abaningi baye bawela ekungaqondini okuthile phakathi nenqubo yokukhetha nokusebenzisa. Lesi sihloko sihlose ukuveza lokhu kungezwani futhi sinikeze ukuqonda okuyikho kanye neziphakamiso.

Ukungaqondi kahle 1: Uma sikhulu isisindo samangqamuzana, kuphakama ukusebenza kahle kwe-flocculation.

Lapho ukhetha i-polyacrylamide, abantu abaningi bacabanga ukuthi imodeli enesisindo esikhulu samangqamuzana kufanele ibe nokusebenza kahle okuphezulu kwe-flocculation. Kodwa empeleni, kunamakhulu amamodeli we-polyacrylamide, afanele izimo ezihlukene zekhwalithi yamanzi. Imvelo yamanzi angcolile akhiqizwa izimboni ezimbonini ezahlukene ihlukile. Inani le-pH kanye nokungcola okuthile kwezimfanelo zamanzi ezihlukene kuhluke kakhulu. Angase abe acidic, ane-alkaline, angathathi hlangothi, noma aqukathe amafutha, izinto eziphilayo, umbala, intlenga, njll. Ngakho-ke, kunzima ngohlobo olulodwa lwe-polyacrylamide ukuhlangabezana nazo zonke izidingo zokuhlanza amanzi angcolile. Indlela efanele iwukuba uqale ukhethe imodeli ngokuhlolwa, bese uhlola umshini ukuze uthole umthamo ophelele ukuze kuzuzwe umphumela obiza kakhulu.

Ukungaqondi kahle 2: Uma kuphezulu ukugxila kokucushwa, kuba ngcono

Lapho ulungiselela izixazululo ze-polyacrylamide, abasebenzisi abaningi bakholelwa ukuthi ukuphakama okuphezulu, ngcono izakhiwo ze-flocculation. Nokho, lo mbono awulungile. Eqinisweni, ukugxila kokucushwa kwe-PAM kufanele kunqunywe ngokuya ngezimo ezithile zokukhucululwa kwendle kanye nodaka. Ngokuvamile, izixazululo ze-PAM ezinengxube engu-0.1% -0.3% zilungele ukugeleza nokucwiliswa kwenhlabathi, kuyilapho ukugxila kokukhipha amanzi ngodaka lukamasipala nolwezimboni kungu-0.2% -0.5%. Uma kunokungcola okuningi kakhulu emanzini okukhucululwa kwendle, ukugcwala kwe-PAM kungase kudingeke kwandiswe ngendlela efanele. Ngakho-ke, ukugxila kokucushwa okunengqondo kufanele kunqunywe ngokuhlolwa ngaphambi kokusetshenziswa ukuze kuqinisekiswe umphumela wokusebenzisa ongcono kakhulu.

Ukungaqondi kahle 3: Uma isikhathi sokuncibilika nesinyakazayo siside, kuba ngcono

I-Polyacrylamide iyizinhlayiyana zekristalu emhlophe edinga ukuncibilika ngokugcwele ukuze kuzuzwe umphumela omuhle kakhulu. Abasebenzisi abaningi bacabanga ukuthi isikhathi eside sokuqedwa nokushukumisa, kungcono, kodwa empeleni lokhu akunjalo. Uma isikhathi sokugqugquzela siside kakhulu, sizobangela ukuphuka ingxenye yeketango le-molecular PAM futhi kuthinte ukusebenza kwe-flocculation. Ngokuvamile, isikhathi sokuncibilika nokunyakaza akufanele sibe ngaphansi kwemizuzu engama-30 futhi kufanele sandiswe ngendlela efanele lapho izinga lokushisa liphansi ebusika. Uma isikhathi sokuqedwa kanye nokushukumisa sifushane kakhulu, i-PAM ngeke ihlakazwe ngokugcwele, okuzoholela ekungakwazini ukwenza ngokuphumelelayo ukugeleza kwe-flocculation ngokushesha emanzini. Ngakho-ke, abasebenzisi kufanele baqinisekise ukuqedwa okwanele kanye nesikhathi sokunyakazisa uma besisebenzisa ukuze baqinisekise umphumela we-flocculation we-PAM.

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

Njengenye yezinkomba ezibalulekile ze-polyacrylamide, i-ionicity isho ukushaja kwe-ionic okungekuhle futhi okuhle kanye nokuminyana kwayo kokushaja. Abantu abaningi banaka kakhulu ionicity lapho bethenga, becabanga ukuthi ukuphakama kungcono. Kodwa empeleni, izinga le-ioncity lihlobene nobukhulu besisindo samangqamuzana. Lapho ionicity iphakeme, isisindo samangqamuzana sincane, futhi intengo ikhuphuka. Enqubweni yokukhetha, ngaphezu kwe-ionicity, ezinye izici zidinga ukucatshangelwa, njengezimo ezithile zekhwalithi yamanzi, izidingo zomphumela we-flocculation, njll. Ngakho-ke, imodeli ayikwazi ukukhethwa ngokusekelwe kuphela izinga le-ionization. Ukuhlola okwengeziwe kuyadingeka ukuze kunqunywe imodeli edingekayo.

Njengoi-flocculant, i-polyacrylamide idlala indima ebalulekile embonini yokuhlanza amanzi. Uma udinga ukukhetha imininingwane evumelana nawe, ngicela ungithinte.