Matšoao a mararo ao u lokelang ho a ela hloko ha u khetha PAM

Polyacrylamide(PAM) ke organic polymer flocculant e sebelisoang haholo tšimong ea ho hloekisa metsi. Lipontšo tsa tekheniki tsa PAM li kenyelletsa ionicity, degree ea hydrolysis, boima ba limolek'hule, joalo-joalo Matšoao ana a na le tšusumetso e kholo ho phello ea flocculation ea kalafo ea metsi. Ho utloisisa matšoao ana ho tla u thusa ho khetha kapele lihlahisoa tsa PAM tse nang le litlhaloso tse nepahetseng.

Bolutu

Lonicity e bolela hore na ketane ea molek'hule ea PAM e na le liqoso tse ntle kapa tse mpe. Tekanyo ea ionization e na le tšusumetso e kholo ho phello ea flocculation ea phekolo ea metsi. Ka kakaretso, ha ionicity e phahame, phello ea flocculation e betere. Lebaka ke hobane liketane tsa limolek'hule tsa PAM li na le litefiso tse ngata mme li khona ho monya likaroloana tse emisitsoeng, ho etsa hore li bokane hammoho ho theha lihlopha tse kholoanyane.

Polyacrylamide e arotsoe haholo-holo ka mefuta ea anionic (APAM), cationic (CPAM), le mefuta e seng ea ionic (NPAM) ho latela ionicity ea bona. Mefuta ena e meraro ea PAM e na le litlamorao tse fapaneng. Lits'ebetsong tse sebetsang, ho hloka hore ho khethoe ionicity e nepahetseng ho ipapisitsoe le lintlha tse joalo ka boleng ba pH ba metsi a hloekisitsoeng, matla a motlakase, le kholiso ea likaroloana tse emisitsoeng. Ka mohlala, bakeng sa metsi a litšila a acidic, PAM e nang le cationicity e phahameng e lokela ho khethoa; bakeng sa metsi a litšila a alkaline, PAM e nang le anionicity e phahameng e lokela ho khethoa. Ho phaella moo, ho finyella phello e ntle ea flocculation, e ka boela ea finyelloa ka ho kopanya PAM le li-degree tse fapaneng tsa ionic.

Tekanyo ea Hydrolysis (bakeng sa APAM)

Tekanyo ea hydrolysis ea PAM e bua ka tekanyo ea hydrolysis ea lihlopha tsa amide ho ketane ea eona ea limolek'hule. Tekanyo ea hydrolysis e ka aroloa ka likhato tse tlase, tse mahareng le tse phahameng tsa hydrolysis. PAM e nang le likhato tse fapaneng tsa hydrolysis e na le thepa le ts'ebeliso e fapaneng.

PAM e nang le tekanyo e tlaase ea hydrolysis e sebelisoa haholo-holo bakeng sa ho tiisa le ho tsitsisa. E eketsa viscosity ea tharollo, e lumella likaroloana tse emisitsoeng hore li qhalane hantle. E sebelisoa haholo ha ho cheka maro, ho koahela, le indastering ea lijo.

PAM e nang le tekanyo e bohareng ea hydrolysis e na le phello e ntle ea flocculation 'me e loketse mekhoa e fapaneng ea phekolo ea boleng ba metsi. E ka kopanya likaroloana tse emisitsoeng ho etsa li-flocs tse kholoanyane ka adsorption le bridging, kahoo e fumana tharollo e potlakileng. E sebelisoa haholo masimong a ho hloekisa likhoerekhoere tsa litoropo, ho hloekisa metsi a litšila a indasteri, le ho felloa ke matla ha metsi.

PAM e nang le tekanyo e phahameng ea hydrolysis e na le bokhoni bo matla ba adsorption le decolorization 'me hangata e sebelisoa ho hatisa le ho daea phekolo ea metsi a litšila le masimo a mang. E ka khabisoa le ho tlosa lintho tse kotsi ka har'a metsi a litšila, joalo ka dae, lirafshoa tse boima le lintho tse phelang, ka litefello le lihlopha tsa adsorption ho ketane ea polymer.

Boima ba Molek'hule

Boima ba molek'hule ba PAM bo bolela bolelele ba ketane ea eona ea molek'hule. Ka kakaretso, ho phahama ha boima ba limolek'hule, ho ntlafatsa phello ea flocculation ea PAM. Lebaka ke hore boima bo phahameng ba molek'hule PAM e ka ba molemo ka ho fetisisa adsorb particles suspended, e etsa hore ba bokane hammoho ho theha lihlopha tse kholoanyane. Ka nako e ts'oanang, boima bo phahameng ba limolek'hule PAM e na le matla a molemo a ho kopanya le ho kopanya, a ka ntlafatsang matla le botsitso ba floc.

Lits'ebetsong tse sebetsang, boima ba limolek'hule tsa PAM tse sebelisetsoang ho hloekisa likhoerekhoere tsa litoropo le ho hloekisa metsi a litšila tsa indasteri ho hloka litlhoko tse phahameng, ka kakaretso ho tloha ho limilione ho ea ho limilione tse mashome. Litlhoko tsa boima ba limolek'hule tsa PAM tse sebelisetsoang phekolo ea ho felloa ke metsi 'meleng li batla li le tlaase, ka kakaretso li tloha ho limilione ho ea ho mashome a limilione.

Qetellong, matšoao a kang ionicity, hydrolysis degree, le boima ba limolek'hule ke lintlha tsa bohlokoa tse amang phello ea kopo ea PAM kalafo ea metsi. Ha u khetha lihlahisoa tsa PAM, u lokela ho nahana ka boleng ba metsi ka botlalo 'me u khethe ho latela matšoao a tekheniki a PAM ho fumana phello e ntle ka ho fetisisa ea flocculation, ho ntlafatsa katleho le boleng ba phekolo ea metsi.