I-Flocculation - I-Aluminium sulphate vs i-Poly aluminium chloride

Ukuxinana yinkqubo apho amasuntswana axhonyiweyo angenazo i-negative charge ekhoyo kwi-stable suspension emanzini anganyakazi. Oku kufezekiswa ngokongeza i-coagulant echajiweyo kakuhle. I-positive charge kwi-coagulant inganyakazi i-negative charge ekhoyo emanzini (oko kukuthi iyayinganyakazi). Nje ukuba amasuntswana anganyakazi okanye anganyakazi, inkqubo yokuxinana iyenzeka. Amasuntswana anganyakaziyo adibana abe ngamasuntswana amakhulu namakhulu de abe nzima ngokwaneleyo ukuba aphume ngokunyibilika okanye abe makhulu ngokwaneleyo ukubamba amaqamza omoya aze antante.

Namhlanje siza kujonga ngokusondeleyo iimpawu ze-flocculant ze-flocculants ezimbini eziqhelekileyo: i-poly aluminium chloride kunye ne-aluminium sulfate.

I-Aluminium Sulfate: I-Aluminium Sulfate ine-asidi ngokwemvelo. Umgaqo osebenzayo we-aluminium sulfate ngolu hlobo lulandelayo: i-aluminium sulfate ivelisa i-aluminium hydroxide, i-Al(0H)3. Ii-aluminium hydroxides zinoluhlu lwe-pH olulinganiselweyo, apho aziyi kufakelwa i-hydrolysis okanye i-hydrolyzated aluminium hydroxides ngokukhawuleza kwi-pH ephezulu (oko kukuthi i-pH engaphezulu kwe-8.5), ngoko ke i-pH esebenzayo kufuneka ilawulwe ngononophelo ukuze ihlale kuluhlu lwe-5.8-8.5. I-alkalinity emanzini kufuneka yanele ngexesha lenkqubo yokuqunjelwa ukuqinisekisa ukuba i-hydroxide enganyibilikiyo yenziwe ngokupheleleyo kwaye iyancipha. Isusa izinto ezinombala kunye ne-colloidal ngokudityaniswa kwe-adsorption kunye ne-hydrolysis kwi-hydroxides yesinyithi. Ke ngoko, ifestile ye-pH yokusebenza ye-aluminium sulfate yi-5.8-8.5 kuphela, ngoko ke kubaluleke kakhulu ukuqinisekisa ulawulo oluhle lwe-pH kuyo yonke inkqubo xa usebenzisa i-aluminium sulfate.

I-Polyaluminum chloride(PAC) yenye yeekhemikhali zonyango lwamanzi ezisebenzayo kakhulu ezisetyenziswayo namhlanje. Isetyenziswa kakhulu kunyango lwamanzi okusela kunye namanzi amdaka ngenxa yokusebenza kwayo okuphezulu kokujiya kunye noluhlu olubanzi lwe-pH kunye nobushushu xa kuthelekiswa nezinye iikhemikhali zonyango lwamanzi. I-PAC ifumaneka kwiindidi ezahlukeneyo ezahlukeneyo kunye noxinzelelo lwe-alumina oluqala kwi-28% ukuya kwi-30%. Uxinzelelo lwe-alumina alukuphela kwento ekufuneka uyiqwalasele xa ukhetha ukuba loluphi uhlobo lwe-PAC oza kulusebenzisa.

I-PAC ingathathwa njenge-pre-hydrolysis coagulant. Ii-aluminiyam ze-pre-hydrolysis clusters zinobunzima obukhulu kakhulu bokutshaja, nto leyo eyenza i-PAC ibe yi-cationic ngakumbi kune-alum. Oku kwenza ukuba ibe yi-destabilizer enamandla kwiingcola ezixhonyiweyo ezitshajiweyo kakuhle emanzini.

I-PAC inezi nzuzo zilandelayo ngaphezu kwe-aluminium sulfate

1. Isebenza kumanqanaba aphantsi kakhulu. Ngokwesiqhelo, idosi ye-PAC imalunga nesinye kwisithathu sedosi efunekayo kwi-alum.

2. Ishiya i-aluminium encinci emanzini acociweyo

3. Ivelisa udaka oluncinci

4. Isebenza kuluhlu olubanzi lwe-pH

Kukho iintlobo ezininzi ze-flocculants, kwaye eli nqaku lazisa ezimbini kuphela. Xa ukhetha i-coagulant, kufuneka ucinge ngomgangatho wamanzi owanyangayo kunye nohlahlo-lwabiwo mali lwakho. Ndiyathemba ukuba unamava amahle okunyanga amanzi. Njengomthengisi weekhemikhali zokunyanga amanzi onamava angama-28 eminyaka. Ndiyavuya ukusombulula zonke iingxaki zakho (malunga neekhemikhali zokunyanga amanzi).