Mefuta e 2 ea lisebelisoa tse ka fumanoang ka theknoloji ea nanofiltration

Nanofiltration ke eng?

Nanofiltration (NF) ke lera la semi-permeable (e leng thin ultra-thin selective barrier) e sebelisoang ho sefa maro liindastering tse ngata. Nanofiltration pore size e pakeng tsa 1 ~ 10 nm, pakeng tsa reverse osmosis le ultrafiltration, 'me ke filimi ea bobeli e teteaneng.

Mokelikeli o phunyeletsoa ka har'a lera ka khatello: likaroloana tse nyenyane ho feta bophara ba "nanofiltration membrane aperture" li tla feta, ha likaroloana tse kholo ho feta bophara ba "nanofiltration membrane aperture" li tla qabelloa. Likarolo ha li khone ho ts'oaroa feela ke ho qheleloa ka thoko ho boholo, empa li ka hohela kapa tsa leleka litšila tse itseng ho latela tefiso ea tsona kapa kamano ea tsona ea lik'hemik'hale, ho ts'oaroa ka litlamorao tsa lik'hemik'hale tsa membrane.

Nanofiltration e ntlafatsa boleng ba metsi, 'me e sebelisa matla a fokolang ho feta reverse osmosis (RO). Bakeng sa phekolo ea metsi a mang a sa hlokeng ho tlosa letsoai le phahameng, li-membrane tsa nanofiltration li ka sebelisoa e le lera le sebetsang la RO, le nang le bokhoni ba ho tlosa libaktheria, likokoana-hloko, lintho tse phelang le li-ion tse nang le bivalent.

Nanofiltration e ne e sebelisoa qalong bakeng sa ho tlosoa ha sulfate indastering ea oli le khase, empa hona joale e sebelisoa indastering ea ho hloekisa metsi, mohlala, ho nolofatsa metsi, metsi a nooang le ho phekola metsi a litšila a indasteri le brine. Haufinyane tjena, nanofiltration e boetse e sebelisoa ho tlosa litšila tse hlahang metsing a nooang.

Theknoloji ea Nanofiltration e ka qala ho khutlisa metsi a boleng bo holimo a loketseng ho sebelisoa hape, tumellanong le mohopolo oa moruo o chitja, empa hape le ka ho hlaphoheloa ha lisebelisoa tse ling (tse kang lisebelisoa tsa baeloji, liminerale le lik'hemik'hale) butle-butle li fumana tlhokomelo 'marakeng.

Sodium hydroxide (NaOH)

Sodium hydroxide (NaOH) ke letsoai le feto-fetohang la alkaline le senyang le ho qhala lintho tse phelang le tse sa pheleng. Ka hona, e sebelisoa ho hloekisa, ho tlosa mafura le mekhoa ea ho hlobolisa liindasteri tse sa tšoaneng.

Ka lebaka la bongata bo bongata ba lintho tse silafatsang ka har'a soda e litšila, hangata ha e sebelisoe hape tlhahisong ea indasteri. Ho e-na le hoo, lik'hemik'hale tse ling, tse kang hydrochloric kapa sulfuric acid, li hloka ho kenngoa ho fokotsa alkalinity. Leha ho le joalo, ka theknoloji ea nanofiltration, litšila tsa caustic soda li ka fumanoa le ho sebelisoa hape ka ho tlosa litšila.

E mong oa bareki ba kholo ka ho fetisisa tikolohong ea caustic soda ke Asia Boroa, e nang le indasteri e kholo ea masela. Mona, tharollo ea soda ea caustic ha e sebelisoe feela bakeng sa ho hloekisa, empa hape ke karolo ea bohlokoa ea tlhahiso ea masela, haholo-holo ts'ebetsong ea bleaching moo e ntlafatsang matla, khanya le dae affinity ea likhoele tsa k'hothone.

Ho tloha ka 2020, re fumane lipotso khafetsa mabapi le li-membrane tsa nanofiltration 'marakeng oa Asia Boroa-bochabela. Ka hona, selemong sona seo, k'hamphani ea rona e ile ea iketsetsa mohala oa eona oa tlhahiso ea nanofiltration membrane. Etsa puisano ea tekheniki le lihlopha tse tsoang mefuteng e tsebahalang ea machabeng joalo ka Dow, HYDRANAUTICS, Toray, Vontron, jj.

E HID HNF-8040HF ke mohlala oa rona oa pele oa nano membrane, e ileng ea fetoha mohlala o ka sehloohong oa papatso 'me ea rorisoa haholo ke basebelisi ba indasteri ea masela.

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Moiteli o tsosolositsoeng

Phosphorus, e leng limatlafatsi tse ka sehloohong manyolo, e ntse e haella, e leng se hlahisang matšoenyeho mabapi le tšireletseho ea lijo ea nako e telele. Phosphorus ke mohlodi o lekanyeditsweng o tswang morafong wa phosphate. Ha mehloli ea phosphorus ea lefats'e e ntse e fokotseha le ho fella libakeng tse ikemetseng, liketane tsa phepelo li kotsing.

Ka nako e ts'oanang, ho bokellana ho feteletseng ha limatlafatsi tsena tsa bohlokoa ho senya tikoloho, ho baka tšilafalo e tebileng 'meleng oa metsi ka ts'ebetso ea eutrophication. Ka ho hapa le ho tsosolosa limatlafatsi tsena ho theha mohloli oa likokoana-hloko, liphephetso tse peli li ka rarolloa ka nako e le 'ngoe: tšireletso ea lijo le ho senyeha ha tikoloho.

Le hoja nanofiltration e se ts'ebetso ea bohlokoa bakeng sa tlhahiso ea manyolo e tsosolositsoeng, e ka hlahisa sehlahisoa sa boleng bo phahameng ka ho tlosa litšila le ho tsepamisa limatlafatsi ka har'a lero la tšilo ea lijo. Ka mokhoa oa coagulation-flocculation, lihlahisoa tse tala li ka silafatsoa ke lik'hemik'hale tse setseng, ha nanofiltration e qoba bothata bona ka ho arohana 'meleng ka lera ho e-na le lik'hemik'hale. Ntle le ho theha lisebelisoa tsa boleng bo holimo tsa baeloji le ho hlahisa liphaello bakeng sa basebelisi ba ho qetela, boleng ba metsi a lahliloeng le bona bo ntlafalitsoe mme theko ea kalafo ea biosolids e fokotsehile.