I-Polyacrylamide(i-PAM) ngokuvamile ingahlukaniswa ibe yi-anionic, i-cationic, kanye ne-nonionic ngokwezinhlobo ze-ion. Isetshenziswa kakhulu ekufakweni kwamanzi ekuhlanzweni kwamanzi. Lapho ukhetha, izinhlobo ezahlukene zamanzi angcolile zingakhetha izinhlobo ezahlukene. Udinga ukukhetha i-PAM efanele ngokwezimpawu zendle yakho. Ngesikhathi esifanayo, kufanele futhi ucacise ukuthi iyiphi inqubo ezongezwa ngayo i-polyacrylamide kanye nenhloso ofuna ukuyifeza ngokuyisebenzisa.
Izinkomba zobuchwepheshe ze-polyacrylamide ngokuvamile zifaka phakathi isisindo sama-molecule, izinga le-hydrolysis, i-ionicity, i-viscosity, okuqukethwe kwe-residual monomer, njll. Lezi zinkomba kufanele zicaciswe ngokuya ngamanzi angcolile owaphathayo.
1. Isisindo sama-molecule/ukujiya
I-Polyacrylamide inezinhlobo ezahlukene zesisindo sama-molecule, kusukela phansi kuya phezulu kakhulu. Isisindo sama-molecule sithinta ukusebenza kwama-polymer ezinhlotsheni ezahlukene. I-polyacrylamide enesisindo sama-molecule amaningi ivame ukusebenza kangcono enqubweni yokugoqa ngoba amaketanga ayo ama-polymer amade futhi angaxhumanisa izinhlayiya eziningi ndawonye.
I-viscosity yesisombululo se-PAM iphakeme kakhulu. Uma i-ionization izinzile, lapho isisindo sama-molecule se-polyacrylamide sikhulu, i-viscosity yesisombululo sayo iba nkulu. Lokhu kungenxa yokuthi uchungechunge lwe-macromolecule lwe-polyacrylamide lude futhi luncane, futhi ukumelana nokunyakaza esixazululweni kukhulu kakhulu.
2. Izinga le-hydrolysis kanye ne-ionicity
I-ionicity ye-PAM inethonya elikhulu emphumeleni wokusetshenziswa kwayo, kodwa inani layo elifanele lincike ohlotsheni kanye nohlobo lwezinto eziphathwe, futhi kunezinhlobo ezahlukene ezifanele ezimweni ezahlukene. Lapho amandla e-ionic ezinto eziphathwayo ephezulu (izinto ezingaphili kakhulu), i-ionicity ye-PAM esetshenzisiwe kufanele ibe phezulu, ngaphandle kwalokho kufanele ibe phansi. Ngokuvamile, izinga le-anion libizwa ngokuthi izinga le-hydrolysis, kanti izinga le-ion libizwa ngokuthi izinga le-cation.
Indlela yokukhetha i-polyacrylamidekuncike ekuqongeleleni kwama-colloid kanye nezinto eziqinile ezilenga emanzini. Ngemva kokuqonda izinkomba ezingenhla, ungayikhetha kanjani i-PAM efanelekile?
1. Qonda umthombo wendle
Okokuqala, kumelwe siqonde umthombo, uhlobo, ukwakheka, okuqukethwe okuqinile, njll. kodaka.
Ngokuvamile, i-cationic polyacrylamide isetshenziselwa ukwelapha udaka oluyimvelo, kanti i-anionic polyacrylamide isetshenziselwa ukwelapha udaka oluyimvelo. Uma i-pH iphezulu, i-cationic polyacrylamide akufanele isetshenziswe, futhi uma i-anionic polyacrylamide akufanele isetshenziswe. I-asidi enamandla yenza kungafaneleki ukusebenzisa i-anionic polyacrylamide. Uma okuqukethwe okuqinile kodaka kuphezulu, inani le-polyacrylamide esetshenziswayo likhulu.
2. Ukukhethwa kwe-ionicity
Kudaka oludinga ukuncishiswa emanzini ekuhlanzweni kwendle, ungakhetha ama-flocculant ane-ionicity ehlukile ngokusebenzisa izivivinyo ezincane ukuze ukhethe i-polyacrylamide efanelekile kakhulu, engafeza umphumela omuhle kakhulu we-flocculation futhi inciphise umthamo, igcine izindleko.
3. Ukukhethwa kwesisindo sama-molecule
Ngokuvamile, uma isisindo sama-molecule semikhiqizo ye-polyacrylamide siphakeme, kulapho i-viscosity iba nkulu khona, kodwa lapho isetshenziswa, isisindo sama-molecule somkhiqizo siba sikhulu, umphumela wokusetshenziswa uba ngcono. Ekusetshenzisweni okuthile, isisindo sama-molecule esifanele se-polyacrylamide kufanele sinqunywe ngokuya ngemboni yangempela yokufaka isicelo, ikhwalithi yamanzi kanye nemishini yokwelapha.
Uma uthenga futhi usebenzisa i-PAM okokuqala, kunconywa ukuthi unikeze umenzi we-flocculant isimo esithile sendle, futhi sizokuncoma uhlobo lomkhiqizo olufanele kakhulu. Futhi uthumele amasampula ngeposi ukuze ahlolwe. Uma unolwazi oluningi ekuphathweni kwendle yakho, ungasitshela izidingo zakho ezithile, amasimu okusetshenziswa, kanye nezinqubo, noma usinike ngqo amasampula e-PAM owasebenzisayo njengamanje, futhi sizokufanisa ne-polyacrylamide efanele.
Isikhathi sokuthunyelwe: Julayi-15-2024