Mokhoeng oa ho phekola metsi a litšila, e hloka ho feta mehatong e 'maloa ea ts'ebetso, 'me ka mor'a ho lekoa ho fihlela maemo a ho ntša metsi, e ea ntšoa. Letotong lena la lits'ebetso, flocculant e bapala karolo ea bohlokoa.Flocculante ka phaphamala taba e emisitsoeng ea limolek'hule tse nyane ka metsing. Ho lula hantle, ho etsa hore ho be bonolo ho sefa. Mefuta ea li-flocculant le eona e ruile haholo. Mokhoa oa ho khetha flocculant e u tšoanelang le oona oa bohlokoa ebile oa bohlokoa. Mabapi le khetho ea li-flocculant, bahlahisi ba PAM le PAC ba na le litlhahiso tse latelang:
Mokhoa oa ho khetha flocculant kalafong ea metsi a litšila o lokela ho khethoa ho latela litšobotsi tsa metsi a litšila indastering e itseng. Ka nako e ts'oanang, ho boetse ho itšetlehile ka hore na flocculant e eketsoa hokae le hore na e sebelisetsoa eng. Ka kakaretso, ha ho khethoa flocculant e sa tloaelehang, ho lokela ho nahanoa ka motsoako oa metsi a litšila, ebe ho khethoa o loketseng (letsoai la tšepe, letsoai la aluminium kapa letsoai la tšepe-aluminium, letsoai la silicon-aluminium, letsoai la silicon-ferric, jj.); li-flocculant tse sa tloaelehang tsa polymer li kenyelletsa:polyaluminum chloride (PAC), sulfate ea polyaluminum (PAS), polyaluminum sulfochloride (LIPACSlesulfate ea polyferric (PFS), jj. Har'a tsona, PAC le PAS tse nang le boemeli bo bongata li na le litšobotsi tsa ho ikamahanya hantle le liphetoho tsa boleng ba metsi tse phekoloang ke lik'hemik'hale tse tala tsa kalafo ea metsi, litlamorao tse ntle tsa ho hoama le ho hloekisa, le litšenyehelo tse tlase tsa lik'hemik'hale.
Ha o kgetha flocculant ya tlhaho (jwalo ka:polyacrylamide PAM), haholo-holo ho itšetlehile ka hore na ho sebelisoa polyacrylamide ea anionic, polyacrylamide ea cationic kapa polyacrylamide e seng ea ionic. Li-polyacrylamide tsa Anionic li ipapisitse le tekanyo ea hydrolysis. Khetho ea li-cation e atisa ho sebelisoa ho ntšeng metsi ka seretse. Khetho ea polyacrylamide ea cationic e bohlokoa haholo. Litsi tsa kalafo ea likhoerekhoere tsa litoropo ka kakaretso li sebelisa polyacrylamide ea cationic e matla e mahareng. Li-cation tse fokolang hangata li sebelisoa bakeng sa ho felloa ke metsi ha seretse limela tsa ho etsa pampiri le tsa ho hatisa le tsa ho daea, 'me metsi a litšila a meriana hangata a sebelisoa. Khetha li-cation tse matla jj. Mofuta o mong le o mong oa metsi a litšila o na le litšobotsi tsa oona. Polyacrylamide e seng ea ionic e sebelisoa haholo tlas'a maemo a fokolang a asiti, 'me PAM e seng ea ionic e sebelisoa haholo lifekthering tsa khatiso le tsa ho daea.
Bafepedi ba moemeli oa kalafo ea metsifana ka maikutlo a hore khetho ea li-flocculant tsena tsohle e lokela ho khethoa ho latela teko. Tekong, fumana tekanyo e hakanyetsoang ea tekanyo, hlokomela lebelo la flocculation le la sedimentation, bala litšenyehelo tsa kalafo, 'me u khethe moemeli oa flocculation o theko e tlaase le o sebetsang.
Nako ea poso: Tshitwe-19-2022