I-Flocculation – iAluminiyam sulphate vs iPoly aluminiyam chloride

I-Flocculation yinkqubo apho amasuntswana amisiweyo ahlawuliswa kakubi akhoyo ekumisweni okuzinzileyo emanzini aphazamiseka. Oku kuphunyezwa ngokongeza i-coagulant ene-positive charged. Umrhumo ochanekileyo kwi-coagulant unciphisa umrhumo ongalunganga okhoyo emanzini (oko kukuthi uyawenza angasebenzi). Emva kokuba amaqhekeza ahlanjululwe okanye angathathi hlangothi, inkqubo ye-flocculation iyenzeka. Iingqungquthela ezizinzileyo zidibanisa zibe ngamaqhekeza amakhulu kunye namakhulu ade abe nzima ngokwaneleyo ukuba ahlaliswe ngokuchithwa okanye anele ngokwaneleyo ukubambisa amaqamza omoya kunye nokudada.

Namhlanje siza kujonga ngakumbi kwiipropati ze-flocculation ezimbini eziqhelekileyo eziqhelekileyo: i-poly aluminium chloride kunye ne-aluminium sulfate.

I-aluminium Sulfate: I-Aluminium Sulfate i-acidic kwindalo. Umgaqo osebenzayo we-aluminium sulfate ulandelayo: i-aluminium sulfate ivelisa i-aluminium hydroxide, i-Al (0H) 3. I-Aluminiyam hydroxides inoluhlu lwe-pH olulinganiselweyo, ngaphezu kwayo ayiyi kusebenza ngokufanelekileyo i-hydrolysis okanye, i-hydrolyzated aluminiyam hydroxides yahlala ngokukhawuleza kwi-pH ephezulu (okt pH ngaphezu kwe-8.5), ngoko i-pH yokusebenza kufuneka ilawulwe ngononophelo ukuyigcina kuluhlu lwe-5.8-8.5 . i-alkalinity emanzini kufuneka ibe yanele ngexesha lenkqubo ye-flocculation ukuze kuqinisekiswe ukuba i-hydroxide e-insoluble yenziwe ngokupheleleyo kwaye iyancipha. Ukususa umbala kunye nezixhobo ze-colloidal ngokudibanisa i-adsorption kunye ne-hydrolysis kwi / kwi-hydroxides yensimbi. Ngoko ke, ifestile ye-pH yokusebenza ye-aluminium sulfate i-5.8-8.5 ngokungqongqo, ngoko kubaluleke kakhulu ukuqinisekisa ulawulo oluhle lwe-pH kuyo yonke inkqubo xa usebenzisa i-aluminium sulfate.

Polyaluminium chloride(PAC) yenye yezona khemikhali zokucoca amanzi ezisebenzayo namhlanje. Isetyenziswa kakhulu kumanzi okusela kunye nonyango lwamanzi amdaka ngenxa yobuchule bayo obuphezulu be-coagulation kunye noluhlu olubanzi kakhulu lwe-pH kunye nezicelo zobushushu xa kuthelekiswa nezinye iikhemikhali zokunyanga amanzi. I-PAC ifumaneka kumabanga ahlukeneyo ngogxininiso lwe-alumina ukusuka kuma-28% ukuya kuma-30%. Ukugxininiswa kwe-alumina akukuphela kwengqwalasela xa ukhetha ibakala lePAC oza kulisebenzisa.

I-PAC inokuthathwa njenge-pre-hydrolysis coagulant. Amaqela e-aluminiyam angaphambi kwe-hydrolysis anoxinano lwentlawulo ephezulu kakhulu, nto leyo eyenza ukuba iPAC ibe ne-cationic ngakumbi kune-alum.iyenza ibe sisithinteli esinamandla sokungcola okuxhonywe kakubi emanzini.

I-PAC inezi zinzuzo zilandelayo ngaphezu kwe-aluminiyam sulfate

1. Isebenza kwiindawo ezisezantsi kakhulu. Njengomthetho wedosi, idosi yePAC imalunga nesinye kwisithathu sethamo elifunekayo kwi-alum.

2. Ishiya i-aluminiyam encinci eseleyo emanzini acociweyo

3. Ivelisa i-sludge encinci

4. Isebenza kuluhlu olubanzi lwe-pH

Kukho iintlobo ezininzi zeeflocculants, kwaye eli nqaku lazisa kuphela ezimbini zazo. Xa ukhetha i-coagulant, kufuneka uqwalasele umgangatho wamanzi onyangayo kunye nohlahlo lwabiwo-mali lwakho. Ndiyathemba ukuba unamava alungileyo okucoca amanzi. Njengomthengisi wemichiza yonyango lwamanzi oneminyaka engama-28 yamava. Ndiyavuya ukusombulula zonke iingxaki zakho (malunga neekhemikhali zokunyanga amanzi).