Ke eng e ka sebelisoang ho nkela polyaluminium chloride sebakeng sa kalafo ea likhoerekhoere?

Ho hloekisa likhoerekhoere, Polyaluminium Chloride (PAC) e sebelisoa hangata, empa mekhoa e meng e latelang e ka nahanoa maemong a ikhethileng (joalo ka ho fokotsa masala a aluminium, ho ikamahanya le boleng ba metsi a mocheso o tlase kapa ho ntlafatsa litšenyehelo):

Ⅰ. MOEKETSI MAKHETHI

Polyferric sulfate (Pfs)

● Melemo: Ho ikamahanya le maemo ho matla ho tikoloho ea mocheso o tlase (e ntse e sebetsa ho 4 ℃), lebelo le potlakileng la sedimentation, ha ho na kotsi ea masala a aluminium ion, a loketseng bakeng sa phekolo ea metsi a nooang;

● Maemo a sebetsang: metsi a litšila a phahameng a litšila, metsi a litšila a mafura le libaka tse hlokang taolo e tiileng ea aluminium (e kang mesebetsi ea metsi);

● Litšenyehelo: 30-50% e ka tlase ho PAC ka litekanyetso, le ts'ebetso e ntle ea ho ntša metsi a litšila.

Aluminium iron polychloride (PAFC)

● Likarolo: ho kopantsoe le melemo ea letsoai la aluminium le letsoai la tšepe, palesa ea alum e kopane haholoanyane, lebelo la sedimentation le potlakile, le loketse metsi a litšila a phahameng a mocheso / mocheso o tlaase;

● Sebaka sa ts'ebeliso: metsi a litšila a indasteri (mohlala, ho hatisa le ho daea, ho etsa pampiri), mocheso o tlaase le mohloli oa metsi a fokolang.

Lisebelisoa tsa setso tsa inorganic

● Aluminium sulfate: theko e tlaase, empa phello ea flocculation e fokola ho feta PAC, e lokela ho sebelisoa ka thuso ea coagulant;

● Lime (CaO): e sebelisetsoang ho fetola pH le ho tlosa phosphorus, empa tlhahiso ea sludge e kholo, kahoo e hloka ho kopanngoa le mahlahana a mang.

II. Mekhoa e Meng ea Likokoana-hloko le e Kopantsoeng

Polyacrylamide (PAM)

● Mosebetsi: Hangata e sebelisoa e le thuso ea coagulant hammoho le PAC. Ha e sebelisoa e le mong, e lokela ho khethoa ho ea ka boleng ba metsi (cationic / PAM bakeng sa ho ntša metsi a litšila);

● Meeli: E ke ke ea nkela tšebetso ea coagulation ea PAC ka botlalo, 'me e hloka ho sebelisoa le li-inorganic agents.

Motsoako oa flocculant

● PFS + PAM / PAM e fetotsoeng: ho ntlafatsa bokhoni ba ho hloekisa metsi a litšila a nang le oli le ho fokotsa kakaretso ea lik'hemik'hale;

● Chitosan / gelatin e thehiloeng flocculant ea tlhaho: e loketse ho sebetsana le lijo tsa metsi a litšila, tšireletso e phahameng empa theko e phahameng.

Theknoloji e ncha ea patent

● Magnetic composite filler + PAC phokotso: adsorption le photocatalytic capacity e ntlafatsoa ka ho kenya iron oxide, 'me palo ea PAC e fokotsehile ho feta 30%.

Ⅲ. Mekhoa e meng e khethehileng ea ts'ebetso

Lithethefatsi tsa dedrophilic

● Letsoai la lime kapa k'halsiamo: mokhoa oa ho noa ha lik'hemik'hale bakeng sa ho tlosa phosphorus, empa o ka eketsa ho thatafala ha metsi;

● Letsoai la tšepe (mohlala, PFS): ho tlosoa ka nako e le 'ngoe ha phosphorus le tšepe e boima, ho molemo ho feta letsoai la aluminium.

Decolorization le ho senyeha ha COD

● Special decolorizer + ferrous sulfate: bakeng sa ho daea metsi a litšila, nka sebaka sa mosebetsi oa decolorization oa PAC.

Ⅳ. Litlhahiso tsa likhetho tse ling

litaba tse hlokang tlhokomelo:

● Pele ho nkeloa sebaka, litekanyetso tse ntle ka ho fetisisa le mefuta ea pH li lokela ho khethoa ka tlhahlobo ea sefofane (mohlala, PFS e loketse pH 4-11, PAC ke 5-8);

● Masalla a lisebelisoa tse thehiloeng ka aluminium (joaloka PAC le PAFC) a hloka ho hlahlojoa, haholo-holo libakeng tsa metsi tse nang le bothata ba tikoloho;

● Moemeli oa motsoako o ka eketsa bongata ba seretse, kahoo ts'ebetso ea ho ntša metsi e lokela ho ntlafatsoa.