Ukusetyenziswa kwePAC kuShishino lokwenziwa kwamaPhepha

I-Polyaluminium Chloride (PAC) yikhemikhali eyimfuneko kwishishini lokwenza iphepha, idlala indima ebalulekileyo kwizigaba ezahlukeneyo zenkqubo yokwenza iphepha. I-PAC yi-coagulant eyona nto isetyenziselwa ukunyusa ukugcinwa kwamasuntswana amahle, izihluzi kunye nemicu, ngaloo ndlela iphucula ukusebenza kakuhle kunye nomgangatho wokuveliswa kwephepha.

I-Coagulation kunye ne-Flocculation

Owona msebenzi uphambili wePAC ekwenzeni amaphepha kukudityaniswa kwayo kunye neempawu zokujikeleza. Ngethuba lenkqubo yokwenza iphepha, amanzi axutywe kunye ne-cellulose fibers ukwenza i-slurry. Olu daka luqulethe inani elibalulekileyo leengqungquthela ezintle kunye nezinto ezinyibilikileyo ze-organic ezifuna ukususwa ukuvelisa iphepha eliphezulu. I-PAC, xa yongezwa kwi-slurry, i-neutralize imirhumo engalunganga kwiincinci ezimisiweyo, ezibangela ukuba zidibanise zibe zi-aggregates ezinkulu okanye i-flocs. Le nkqubo inceda kakhulu ekukhutshweni kwezi ngqungquthela ezintle ngexesha lokukhutshwa kwamanzi, okubangela amanzi acacileyo kunye nokuphuculwa kokugcinwa kwefiber.

UkuGcinwa okuPhuculweyo kunye nokuThuthwa kwamanzi

Ukugcinwa kweentsinga kunye nezihluzi kubalulekile ekwenzeni iphepha njengoko kuchaphazela ngokuthe ngqo amandla ephepha, ukuthungwa, kunye nomgangatho jikelele. I-PAC iphucula ukugcinwa kwezi zixhobo ngokwenza iiflocs ezinkulu ezinokugcinwa lula kumatshini wephepha. Oku akuphuculi nje kuphela amandla kunye nomgangatho wephepha kodwa kunciphisa umthamo welahleko yempahla ekrwada, okukhokelela ekongeni kweendleko. Ngaphaya koko, ukuhanjiswa kwamanzi okuphuculweyo okuququzelelwa yiPAC kunciphisa umthamo wamanzi kwiphepha lephepha, ngokwenjenjalo kuncitshiswa amandla afunekayo ekomisweni nasekuphuculeni ukusebenza kakuhle kwenkqubo yokwenziwa kwephepha.

Ukuphuculwa koMgangatho wePhepha

Ukusetyenziswa kwePAC ekwenzeni iphepha kunegalelo elikhulu ekuphuculeni umgangatho wephepha. Ngokwandisa ugcino lwezohlwayo kunye nezigcwalisi, iPAC inceda ekuveliseni iphepha elinokwakheka okungcono, ukufana, kunye neempawu ezingaphezulu. Oku kukhokelela ekuphuculweni koshicilelo, ukuguda, kunye nenkangeleko iyonke yephepha, nto leyo eyenza ukuba lifaneleke ngakumbi ushicilelo olukumgangatho ophezulu kunye nokupakishwa kwezicelo.

Ukuncitshiswa kwe-BOD kunye ne-COD ekwenzeni iPhepha lokucocwa kwamanzi amdaka

I-Biochemical Oxygen Demand (BOD) kunye ne-Chemical Oxygen Demand (COD) yimilinganiselo yobungakanani bezinto eziphilayo ezikhoyo kumanzi amdaka awenziwe yinkqubo yokwenza iphepha. Amanqanaba aphezulu e-BOD kunye ne-COD abonisa izinga eliphezulu longcoliseko, olunokuthi lube yingozi kwindalo. I-PAC inciphisa ngokufanelekileyo amanqanaba e-BOD kunye ne-COD ngokudibanisa kunye nokususa ukungcola kwezinto eziphilayo kumanzi amdaka. Oku akuncedi nje ekuhlangabezaneni nemigaqo yokusingqongileyo kodwa kukwanciphisa neendleko zokunyanga ezoyanyaniswa nolawulo lwamanzi amdaka.

Isishwankathelo, i-polyaluminium chloride iyongezwa ebalulekileyo kwishishini le-papermaking, inikezela ngeenzuzo ezininzi eziphucula ukusebenza kakuhle kwenkqubo yokwenza iphepha kunye nomgangatho wemveliso yokugqibela. Iindima zayo ekudibaniseni kunye nokujikeleza, ukugcinwa okuphuculweyo kunye nokukhupha amanzi, ukunciphisa i-BOD kunye ne-COD, kunye nokuphuculwa ngokubanzi komgangatho wephepha kuyenza ibe yinto ebaluleke kakhulu ekwenzeni iphepha langoku.