Mofuta o nepahetseng oa pH oa polyaluminium chloride metsing a litšila a etsang pampiri

Neng Polyaluminium Chloride e sebelisetsoa ho phekola likhoerekhoere tsa ho etsa pampiri, mofuta o motle ka ho fetisisa oa pH o angoa ke lintlha tse ngata. Lithuto tse fapaneng le lits'ebetso tse sebetsang li fana ka mefuta e fapaneng hanyane, hangata lipakeng tsa 6 le 9. A latelang ke maemo a ikhethileng datang e fapaneng:

-pH e lokela ho ba pakeng tsa 6 le 8: Ka har'a mefuta ena, polyaluminium chloride e ka finyella flocculation e nepahetseng le ho kopanya. Maemong a tlase a pH (maemo a asiti), polyaluminium chloride e lokolla li-ion tse ngata tsa aluminium hydroxide, e matlafatsang ho phalla. Leha ho le joalo, haeba pH e le tlase haholo, e ka lebisa ho kutu ea asiti le ho hloka botsitso, kahoo pH e lokela ho bolokoa ka holimo ho 6. Ka lehlakoreng le leng, maemong a phahameng a pH (maemo a alkaline), phello ea flocculation ea polyaluminium chloride e fokotseha. Maemong a nang le alkaline e ngata, li-ion tsa aluminium tse polyaluminium chloride li etsa aluminium hydroxide precipitates, e fokotsa bokhoni ba eona ba ho phalla. Ka hona, ho netefatsa ts'ebetso e nepahetseng, pH e lokela ho bolokoa ka tlase ho 8.

Mohlophisi o batla litšoantšo

-pH 7-9: Liteko li bontšitse hore tlas'a maemo a alkaline (pH 7-9), ha tekanyo ea polyaluminium chloride e feta 750mg / L, tekanyo ea ho tlosoa ha metsoako e emisitsoeng e ka feta 95%, 'me e ka tlosa 20-50% ea CODCr. Ha polyaluminium chloride e sebelisoa ho phekola metsi a litšila a leloala la pampiri, e bontša litlamorao tse ntle tsa kalafo ka har'a mofuta ona oa pH.

-pH 6.8-8.5: E thehiloe ho Phekolo ea Metsi boiphihlelo, ion aluminium ka polyaluminium chloride ke amphoteric. Ka kakaretso, mekhoa ea ho hloekisa metsi ka boleng ba pH pakeng tsa 6 le 9 e ka sebetsa ka mokhoa o tloaelehileng, 'me boleng bo nepahetseng ba pH bo pakeng tsa 6.8 le 8.5. Ha pH ea metsi e le asiti, li-ion tsa aluminium ha li thehe aluminium hydroxide colloids 'me li lula e le li-ion tsa mahala tsa aluminium, kahoo li hloleha ho tlosa litšila tse tsoang metsing a litšila. Ka lehlakoreng le leng, ha pH ea metsi e le alkaline e matla, aluminium hydroxide colloids e ka sebetsana le li-ion tsa hydroxide ho etsa aluminate, kahoo e lahleheloe ke bokhoni ba eona ba ho nyenyefatsa le ho kopanya pula.

Ka lebaka la liphapang tsa boleng ba metsi a litšila har'a lifeme tse fapaneng tsa pampiri, joalo ka ho fapana ha sebopeho se silafetseng le mahloriso, mofuta o nepahetseng oa pH bakeng sa polyaluminium chloride e ka fapana. Lits'ebetsong tse sebetsang, liteko le litokiso li lokela ho etsoa ho ipapisitsoe le boleng bo ikhethileng ba metsi a litšila a lifela tsa pampiri ho fihlela tekanyo e nepahetseng ea polyaluminium chloride le mofuta o nepahetseng oa taolo ea pH.

# aluminium polychlorid #