Phekolo ea metsi ke karolo ea bohlokoa ea ts'ireletso ea tikoloho le bophelo bo botle ba sechaba, 'me morero oa eona ke ho netefatsa boleng ba metsi a sireletsehileng le ho finyella litlhoko tsa mefuta e fapaneng ea likopo. Har'a mekhoa e mengata ea ho hloekisa metsi,polyaluminium chloride(PAC) e khethiloe haholo bakeng sa thepa ea eona e ikhethang le phello e sebetsang ea coagulation.
Phello e sebetsang ea coagulation: PAC e na le ts'ebetso e ntle ea coagulation mme e khona ho tlosa litšila tse joalo ka lintho tse tiileng tse emisitsoeng, li-colloid le lintho tse sa qhibilihang ka metsing le ho ntlafatsa boleng ba metsi.
The mochine oa polyaluminium chloride (PAC) e le coagulant haholo-holo e akarelletsa compression ea lera habeli motlakase, tjhaja neutralization le letlooa trapping. Ho hatella ha lera la motlakase habeli ho bolela hore ka mor'a ho eketsa PAC metsing, li-ion tsa aluminium le li-ion tsa chloride li theha lesela la adsorption holim'a likaroloana tsa colloidal, kahoo li hatella lera la motlakase habeli holim'a likaroloana tsa colloidal, li etsa hore li senyehe le condense; adsorption bridging ke Li-cations tsa limolek'hule tsa PAC li hohelana 'me liqoso tse mpe holim'a likaroloana tsa colloidal, ho etsa sebopeho sa "borokho" ho kopanya likaroloana tse ngata tsa colloidal; phello ea netting ke ka phello ea adsorption le bridging ea limolek'hule tsa PAC le likaroloana tsa colloidal, tse kenyang likaroloana tsa colloidal. E tšoasoa ke marang-rang a limolek'hule tsa coagulant.
Lisebelisoa tsa metsi a polyaluminium chloride
Ha ho bapisoa le li-flocculants tsa inorganic, e ntlafalitse haholo phello ea decolorization ea lidae. Mokhoa oa eona oa ts'ebetso ke hore PAC e ka khothaletsa limolek'hule tsa dae hore li thehe li-flocs tse ntle ka ho hatella kapa ho se nke lehlakore ha sekhahla sa motlakase habeli.
Ha PAM e sebelisoa hammoho le PAC, limolek'hule tsa anionic organic polymer li ka sebelisa phello ea bridging ea liketane tsa tsona tse telele tsa limolek'hule ho hlahisa li-flocs tse teteaneng ka tšebelisano ea ntho e senyang botsitso. Ts'ebetso ena e thusa ho ntlafatsa phello ea ho rarolla le ho etsa hore li-ion tse boima tsa tšepe li tlosoe habonolo. Ho phaella moo, palo e kholo ea lihlopha tsa amide tse nang le liketane tse ka thōko tsa limolek'hule tsa anionic polyacrylamide li ka theha maqhama a ionic le -SON ka limolek'hule tsa dae. Sebopeho sa bond ena ea lik'hemik'hale se fokotsa ho qhibiliha ha flocculant ea manyolo ka metsing, ka tsela eo ho khothalletsa ho thehoa ka potlako le pula ea li-flocs. Mokhoa ona o tebileng oa ho tlama o etsa hore ho be thata le ho feta hore li-ion tsa tšepe tse boima li balehe, ho ntlafatsa katleho le phello ea phekolo.
Mabapi le ho tlosoa ha phosphorus, katleho ea polyaluminium chloride e ke ke ea hlokomolohuoa. Ha e kenngoa metsing a litšila a nang le phosphorus, e ka hydrolyze ho hlahisa li-ion tsa tšepe tsa trivalent aluminium. Ion ena e tlama ho phosphates e qhibilihang ka metsing a litšila, e fetola ea morao hore e be li-insoluble phosphate precipitates. Ts'ebetso ena ea ho fetola ka katleho e tlosa li-ion tsa phosphate metsing a litšila le ho fokotsa tšusumetso e mpe ea phosphorus metsing.
Ntle le karabelo e tobileng ea phosphate, phello ea coagulation ea polyaluminium chloride e boetse e phetha karolo ea bohlokoa ts'ebetsong ea ho tlosa phosphorus. E ka fihlela adsorption le borokho ka ho hatella lera la tefiso holim'a li-ion tsa phosphate. Ts'ebetso ena e etsa hore phosphates le lintho tse ling tse silafatsang tse ka har'a metsi a litšila li kopane ka potlako ho ba lihlopha, 'me li etsa lihlopha tseo ho leng bonolo ho li rarolla.
Habohlokoa le ho feta, bakeng sa lintho tse tiileng tse entsoeng ka granular tse emisitsoeng ka mor'a ho kenyelletsa moemeli oa ho tlosa phosphorus, PAC e sebelisa mochine oa eona o ikhethang oa ho tšoasa letlooa le phello e matla ea ho fokotsa litšenyehelo ho khothalletsa khōlo ea butle-butle le ho teteaneng ha lintho tse tiileng tse emisitsoeng, ebe li kopana, li kopanya le ho phalla likaroloana tse kholoanyane. Likaroloana tsena li lula karolong e ka tlase, 'me ka ho arohana ha metsi a tiileng, mokelikeli o matla o ka ntšoa, kahoo o finyella ho tlosoa ha phosphorus ka katleho. Letoto lena la mekhoa e rarahaneng ea 'mele le ea lik'hemik'hale e tiisa katleho le botsitso ba ho hloekisa metsi a litšila, ho fana ka tiiso e tiileng bakeng sa ts'ireletso ea tikoloho le tšebeliso ea mehloli ea metsi.
Nako ea poso: Jul-10-2024