Umahluko phakathi kwePolyaluminium Ferric Chloride kunye nePolyaluminium Chloride

Polyaluminium ferric chloride (PAFC) kunye I-Polyaluminium chloride (PAC) zimbini ezisetyenziswa ngokuqhelekileyo iipolymer coagulants, kwaye umahluko wazo ongundoqo umi ngolu hlobo lulandelayo:

1. Ukubunjwa kunye nenkangeleko

• I-Polyaluminium chloride (PAC): Icandelo eliphambili yityuwa ye-aluminium, i-yellow, beige okanye emhlophe (ibakala lokutya). I-PAC emhlophe yeyona iphakamileyo kwaye isetyenziselwa ukusela Unyango lwamanzi.
• I-Aluminium ferric polychloride (PAFC): i-compound ye-aluminium kunye neetyuwa zentsimbi, ngokuqhelekileyo iqulethe malunga ne-4% yentsimbi, kwaye ibonakala njengomgubo obomvu obomvu okanye omdaka.

2. Ubungakanani besicelo

• I-PAC: inokunyanga amanzi okusela, amanzi avela kwimizi-mveliso kunye nogutyulo; ilunge ngakumbi ekucoceni amanzi omlambo, umgangatho wamanzi amdaka uthambile, akukho lula ukwenza ukuqina kwelaphu.
• I-PAFC: isetyenziselwa kuphela ukucocwa kwamanzi amdaka kwimizi-mveliso (afana neentsimbi zentsimbi, amashishini ephepha, ukuprinta kunye nokudaya amanzi amdaka, njl. njl.), awafanelekanga ukusela amanzi; inefuthe elibalulekileyo kwi-turbidity ephezulu kunye nobushushu obuphantsi kunye namanzi amdaka aphantsi, kwaye isantya sentlenga se-flocculation siyakhawuleza.

3. Iimpawu zokusebenza

• I-PAC: i-turbidity enamandla kunye nokusebenza kombala, uluhlu olubanzi lwe-pH esebenzayo (6-9); i-corrosion ephantsi, kodwa umphumo unokuhla kwindawo yobushushu obuphantsi.
• I-PAFC: ine-adsorption kunye nekhono lokudibanisa ityuwa ye-aluminium kunye nesantya sokunyuka kwetyuwa yentsimbi, kwaye i-floc ixinene; inokuguquguquka okunamandla kobushushu obuphantsi kunye nezinga eliphezulu lokususa iintsimbi ezinzima (ezifana ne-Cr⁶⁺).

4. Imathiriyeli ekrwada kunye neenkqubo

• I-PAC: I-aluminium hydroxide powder isetyenziselwa ibakala lamanzi okusela, i-calcium aluminate powder ingasetyenziselwa ibakala loshishino.
• I-PAFC: Ukusebenzisa i-aluminium ye-calcium powder kunye ne-iron compound njengezinto eziluhlaza, inkqubo yokuvelisa yazisa i-iron ion ukunyusa umphumo we-coagulation.

5. Iindleko kunye nenjongo

• Ixabiso lePAC liphezulu, ingakumbi iPAC emhlophe ecocekileyo;
• I-PAFC inexabiso eliphantsi kwaye ilungele ukucocwa kwamanzi amdaka kumashishini amakhulu.

Iingcebiso zesishwankathelo:

• Khetha iPAC: amanzi okusela, umthombo wamanzi amdaka okanye iimeko zokuthambisa amanzi (umz., amanzi amdaka elaphu);
• Khetha i-PAFC: amanzi amdaka emizi-mveliso angcoliseke kakhulu (afana nesinyithi esinzima, amanzi amdaka aphezulu e-COD) okanye imekobume yobushushu obuphantsi.

Idosi ethile kufuneka imiselwe ngovavanyo oluncinci (ngokubanzi i-PAC ithamo 1-15g/toni yamanzi, idosi ye-PAFC 3-40g/toni yamanzi). Ukuba kuyimfuneko ukudibanisa kunye nokuphucula ukusebenza kakuhle, i-PAC kunye ne-polyacrylamide (PAM) zingasetyenziswa kunye.