Phapang lipakeng tsa Polyaluminium Ferric Chloride le Polyaluminium Chloride

Polyaluminium ferric chloride (PAFC) le Polyaluminium Chloride (PAC) ke li-coagulants tse peli tse sebelisoang hangata tse sa sebetseng, 'me liphapang tsa tsona tse kholo ke tse latelang:

1. Sebopeho le ponahalo

• Polyaluminium chloride (PAC): Karolo e kholo ke letsoai la aluminium, le mosehla, le beige kapa le lesoeu (sekhahla sa lijo). White PAC ke bohloeki bo phahameng ka ho fetisisa 'me bo sebelisetsoa ho noa Phekolo ea Metsi.
• Aluminium ferric polychloride (PAFC): motsoako oa aluminium le matsoai a tšepe, hangata a nang le tšepe e ka bang 4%, 'me a hlaha e le phofo e khubelu e sootho kapa e sootho.

2. Sebaka sa kopo

• PAC: e ka hloekisa metsi a nooang, metsi a indasteri le likhoerekhoere; haholo-holo hantle ho hloekisa metsi a noka, boleng ba metsi a litšila bo bonolo, ha ho bonolo ho baka ho thatafala ha lesela.
• PAFC: e sebelisoa feela bakeng sa ho hloekisa metsi a litšila a indasteri (joalo ka liloala tsa tšepe, litsi tsa pampiri, ho hatisa le ho daea metsi a litšila, joalo-joalo), ha a tšoanelehe bakeng sa metsi a nooang; e na le phello e kholo holim'a li-turbidity tse phahameng le mocheso o tlase le metsi a litšila a tlaase, 'me lebelo la flocculation sedimentation le potlakile.

3. Likarolo tsa ts'ebetso

• PAC: ts'ebetso e matla ea turbidity le decoloration, mefuta e mengata ea pH e sebetsang (6-9); kutu e tlase, empa phello e ka fokotseha tikolohong ea mocheso o tlase.
• PAFC: e na le bokhoni ba ho kopanya le ho koala letsoai la aluminium le lebelo la ho na ha letsoai la tšepe, 'me floc e teteaneng; e na le matla a ho feto-fetoha ha mocheso o tlase le sekhahla se phahameng sa ho tlosoa ha litšepe tse boima (joalo ka Cr⁶⁺).

4. Lisebelisoa tse tala le mekhoa

• PAC: Aluminium hydroxide powder e sebelisetsoa ho noa metsi a nooang, phofo ea calcium aluminate e ka sebelisoa bakeng sa sehlopha sa indasteri.
• PAFC: Ho sebelisa phofo ea aluminium calcium le motsoako oa tšepe e le lisebelisoa tse tala, ts'ebetso ea tlhahiso e hlahisitse ion ea tšepe ho ntlafatsa phello ea coagulation.

5. Litšenyehelo le morero

• Theko ea PAC e holimo, haholo-holo PAC e tšoeu e hloekileng;
• PAFC e na le litšenyehelo tse tlase 'me e loketse ho hloekisa metsi a litšila a indasteri.

Litlhahiso tse akaretsang:

• Khetha PAC: metsi a nooang, mohloli o fokolang oa metsi kapa maemo a nolofatsang metsi (mohlala, metsi a litšila a masela);
• Khetha PAFC: metsi a litšila a indasteri a silafetseng haholo (joalo ka tšepe e boima, metsi a litšila a phahameng a COD) kapa tikoloho ea mocheso o tlase.

Tekanyetso e khethehileng e lokela ho khethoa ka litlhahlobo tse nyane (ka kakaretso tekanyo ea PAC ke 1-15g/ton ea metsi, tekanyo ea PAFC 3-40g/ton ea metsi). Haeba ho hlokahala ho kopanya le ho ntlafatsa katleho, PAC le polyacrylamide (PAM) li ka sebelisoa hammoho.