Ukufinyelela amanzi okuphuza ahlanzekile, aphephile, futhi anentengo efanelekile kusengenye yezinhloso ezibaluleke kakhulu zezempilo yomphakathi eLatin America. Izixazululo zokwelapha amanzi ezisebenzayo zibalulekile ekuvikeleni abantu kanye nemvelo. Phakathi kwama-coagulant ahlukahlukene asetshenziswa ekuhlanzeni amanzi okuphuza,I-Polyaluminium Chloride(PAC) isibe ngenye yezinketho ezithandwa kakhulu ngenxa yokusebenza kwayo kahle, ukusebenza kahle kwezindleko, kanye nokuguquguquka ngaphansi kwezimo ezahlukene zekhwalithi yamanzi.
Lesi sihloko sizokwethula indlela yokukhetha izinga le-PAC elifanele ukwelashwa kwamanzi okuphuza eLatin America - kucatshangelwa imithetho yendawo, izici zamanzi angavuthiwe, kanye nebhalansi yezindleko nezinzuzo - ukusiza abasabalalisi, abaqhubi bezitshalo, kanye neminyango yamanzi ukwenza izinqumo zokuthenga ezinolwazi.
Iyini i-PAC futhi Kungani isetshenziswa ekwelapheni amanzi okuphuza
I-Polyaaluminium chloride (PAC) iyi-polymer engaphiliI-Coagulant, isetshenziswa kabanzi ukususa ukungcola, umbala kanye nokungcola okungokwemvelo emanzini angavuthiwe. Ngokungafani ne-aluminium sulfate yendabuko (i-alum), i-PAC ingasebenza ngempumelelo ebangeni le-pH elibanzi futhi yakhe ama-floc aqinile futhi aminyene, ngaleyo ndlela ihlale ngokushesha.
Ekuhlanzweni kwamanzi okuphuza, i-PAC, njenge-coagulant eyinhloko, ihlanganisa izinhlayiya ezilengayo, ama-colloid kanye nezinto eziphilayo zemvelo, okwenza zisuswe kalula ngokuthungwa kanye nokuhlunga.
Izinzuzo eziyinhloko ze-PAC kune-alum yendabuko:
Isebenza kahle ngaphakathi kobubanzi be-pH (5.0-9.0).
Kudingeka umthamo ophansi
Khiqiza i-aluminium encane eseleyo
Nciphisa inani lodaka
Thuthukisa ukusebenza kokuhlunga kanye nokucaca
Lezi zici zenza i-PAC ifaneleke kakhulu emithonjeni yamanzi angaphezulu njengemifula, amadamu okugcina amanzi kanye namachibi - okuvame kakhulu emazweni aseLatin America.
Qonda Amabanga Ahlukene E-PAC
Amamaki kanye nezincazelo ze-PAC (i-Polyaaluminium chloride) zivame ukuhlukaniswa ngokusekelwe kokuqukethwe kwezingxenye zayo eziyinhloko kanye nezici zokusetshenziswa. Njengoba amazinga okukhiqiza e-PAC angaba amazinga kazwelonke, amazinga embonini noma amazinga omkhiqizi, izincazelo ezithile zingase zihluke kancane, kodwa izinkomba zokulinganisa eziyinhloko zizonke.
Okulandelayo amamaki ayinhloko kanye nezinkomba zokucaciswa kwe-Yuncang PAC:
| Into | I-PAC-I | I-PAC-D | I-PAC-H | I-PAC-M | I-PAC-G |
| Ukubukeka | Impuphu ephuzi | Impuphu ephuzi | Impuphu emhlophe | Impuphu yobisi | Impuphu emhlophe enobisi |
| Okuqukethwe (%, Al2O3) | 29±1 | 30±1 | 30±1 | 30±1 | 30±1 |
| Isisekelo (%) | 40 - 90 | 40 - 90 | 40 - 90 | 40 - 90 | 40 - 90 |
| Izinto ezingancibiliki emanzini (%) | 1.0 Ubuningi | 0.6 MAX | 0.6 MAX | 0.6 MAX | 0.6 MAX |
| pH | 3.0 - 5.0 | 3.0 - 5.0 | 3.0 - 5.0 | 3.0 - 5.0 | 3.0 - 5.0 |
I-PAC-D
I-PAC ephuzi kancane, esezingeni lamanzi okuphuza enokuqukethwe okuphansi kwensimbi esindayo, ilungele ukwelashwa kwamanzi aphuzwayo. Inikeza ukusebenza kahle kokujiya okuhle kakhulu futhi ingasetshenziswa nasekuhlanzweni kwamanzi okuvamile ezimbonini.
I-PAC-H
I-PAC yempuphu emhlophe emsulwa kakhulu esetshenziswa kabanzi ekuhlanzeni amanzi okuphuza, emanzini angcolile asezimbonini, ekufakeni i-electroplating, nasekwenzeni iphepha. Inikeza ukucaca okuvelele kanye ne-aluminium encane eseleyo.
I-PAC-M
Indlela ehlukile emhlophe njengobisi, engabizi kakhulu kune-PAC-H esebenza kahle ekusetshenzisweni kokuphuza nokuhlanza amanzi ezimbonini.
I-PAC-G
Umkhiqizo we-PAC wesizukulwane esilandelayo ohlinzeka ngokusebenza kahle kokwelashwa okuphezulu kune-PAC-H ngenkathi ungabizi kakhulu kune-PAC-H kanye ne-PAC-M.
I-PAC-I
I-PAC ephuzi, esezingeni lezimboni eyenzelwe ukwelashwa kwamanzi amdaka ahlukahlukene, okuhlanganisa izindwangu, isikhumba, ukuphrinta, ukudaya, kanye nokuguguleka komfula. Njengoba ilula kakhulu, i-PAC-I isebenza kahle kakhulu ekwelapheni amanzi anokungcola okuningi futhi inikeza isilinganiso esihle kakhulu sentengo nokusebenza.
Izinselele Zekhwalithi Yamanzi Okuphuza eLatin America
Izimo zekhwalithi yamanzi kulo lonke elaseLatin America ziyahlukahluka kakhulu ngokwesifunda, okuthonya ukukhethwa kwebanga le-PAC kanye nesu lokulinganisa.
Nazi ezinye zezibonelo zezimo zamanzi ezivamile kanye nezinselele zokwelashwa emazweni abalulekile:
| Izwe | Izici Ezijwayelekile Zamanzi Aluhlaza | Inselele Eyinhloko |
| IBrazil | Ukungcola okuphezulu, umbala, kanye nezinto eziphilayo ezivela emifuleni yasezindaweni ezishisayo | Ukwehluka kwesizini kanye nomthwalo wemvelo |
| I-Argentina | Ukungcola okumaphakathi kanye nobumba lwe-colloidal | ukuguquguquka kwe-pH, ukushintshashintsha kwezinga lokushisa |
| I-Chile | Amanzi angaphezulu avela e-Andes anomswakama omncane | Izinga lokushisa elibandayo, elidinga ukujiya okusebenzayo |
| I-Peru | Amanzi asezintabeni anokuqukethwe okuphansi kwamaminerali | Ukulungisa i-pH kanye ne-alkalinity |
| I-Colombia | Imifula yasemadolobheni enezinto eziphilayo nezingcolile zezimboni | I-COD nokususwa kombala |
Nazi ezinye zezibonelo zezimo zamanzi ezivamile kanye nezinselele zokwelashwa emazweni abalulekile:
Ukuguquguquka kwe-PAC kuzo zonke izimo zokushisa kanye ne-pH kwenza kube kuhle kulezi zindawo ezahlukahlukene.
Ngokwesibonelo:
EBrazil, i-liquid PAC 10% ivame ukusetshenziselwa izinhlelo zikamasipala ngenxa yokusebenza kwayo okuzinzile ngezikhathi zemvula.
EChile nasePeru, i-PAC eyisisekelo ephezulu (85–90%) inikeza ukujiya okusheshayo emanzini asezintabeni anezinga lokushisa eliphansi.
I-Polyaluminum Chloride: Imithethonqubo kanye namazinga ekhwalithi eLatin America
Ngokuphathelene nokwelashwa kwamanzi okuphuza eLatin America, i-PAC kumele ihambisane nezindinganiso zokuphepha zezwe nezamazwe ngamazwe ezifanele.
Izinkomba ezijwayelekile zomthetho zifaka:
IBrazil:I-ABNT NBR 15784 / ANVISA ejwayelekile yokuxuba amanzi okuphuza
I-Argentina neChile:Iziqondiso ZoMnyango Wezempilo (Ministerio de Salud) Izinsalela Ze-Aluminium (<0.2 mg/L)
IMexico:NOM-127-SSA1-2021 (Ubuningi be-aluminium obuphezulu bungu-0.2 mg/L)
I-WHO (Inhlangano Yezempilo Yomhlaba): Izinsalela ze-aluminium emanzini aphathwe kahle <0.2 mg/L
Imikhiqizo ye-PAC esezingeni eliphezulu esetshenziselwa ukwelashwa kwamanzi okuphuza ivame ukuba nezici ezilandelayo:
Okuqukethwe kwezinto ezinganyibiliki kakhulu (<0.1%)
Okuqukethwe kwensimbi okuphansi (<0.005%)
Okuqukethwe okuphezulu kwe-Al₂O₃ (≥30%)
Abathengisi kufanele baqinisekise ukuthi abahlinzeki babo be-PAC bahlinzeka ngezitifiketi ze-NSF/ANSI 60, REACH noma ISO 9001 ukuqinisekisa ukulandelelwa komkhiqizo kanye nokuhambisana nokuphepha.
Khetha i-PAC Efanele Ngokusekelwe Ezimweni Zendawo
Lapho bekhetha i-PAC yokwelapha amanzi okuphuza, abasabalalisi kanye nonjiniyela kufanele bacabangele izici ezintathu eziyinhloko ezilandelayo:
· Umthombo wamanzi kanye nezici zawo
Amanzi angaphezulu (imifula, amadamu okugcina amanzi): Sebenzisa i-PAC ene-alkalinity ephakathi kuya kwephezulu (70-85%) ukwelapha ukugcwala okuphezulu kanye nezinto eziphilayo.
Amanzi angaphansi komhlaba noma amanzi esiphethu: Ukusetshenziswa kwe-PAC ene-alkalinity ephansi (60-70%) kungafeza ukujiya okuthambile futhi kunciphise izinsalela ze-aluminium.
· Uhlelo lokuklama nokulinganisa ifektri
Kwezimboni ezinkulu zikamasipala: I-Liquid PAC (10-18%) kulula ukuyixuba ngokuzenzakalelayo futhi inciphisa ukuchayeka othulini.
Ezindaweni zasemakhaya noma ezinhlelweni ezihlukaniswe ngokwezindawo: I-Powder PAC inezici zokugcina isikhathi eside kanye nokuthuthwa okulula.
· Ukushintshashintsha kwezinga lokushisa kanye nezinkathi zonyaka
Ezindaweni ezishisayo (eBrazil, eColombia), kusetshenziswa i-PAC ejwayelekile ene-alkalinity ephakathi nendawo.
Ezindaweni ezibandayo (njengeChile naseningizimu ye-Argentina), i-PAC ene-alkalinity ephezulu ingathuthukisa ukusebenza kahle kokwakheka kwama-floc emazingeni okushisa aphansi.
Abasabalalisi be-PAC Bangahlala Kanjani Bencintisana
Ukuze bahlale bencintisana emakethe yokwelashwa kwamanzi yaseLatin America, abasabalalisi kufanele:
Bambisana nabantu abathembekileAbakhiqizi be-PACukuhlinzeka ngokulethwa okuzinzile kanye nokusekelwa kobuchwepheshe.
Nikeza isiqondiso sendawo mayelana nomthamo kanye nokuhlolwa kokwenziwa ngcono kwamathini.
Nikeza amaphakheji akhululekile namaphakheji amancane kubasabalalisi bendawo.
Gqamisa isitifiketi (i-NSF, i-REACH, i-ISO) kanye nokulawulwa kwekhwalithi okulandelekayo kwilebula yomkhiqizo.
Njengoba abantu beqaphela ukuphepha kwamanzi kanye nokutshalwa kwezimali kukahulumeni engqalasizinda, isidingo samanzi okuphuza i-PAC eLatin America kulindeleke ukuthi siqhubeke sikhula. Ngokukhetha imikhiqizo ye-PAC esezingeni eliphezulu, eqinisekisiwe futhi uyigcine ngendlela efanele kanye nokupakishwa, abasabalalisi bangadlala indima ebalulekile ekusekeleni impilo yomphakathi kanye nokuvikelwa kwemvelo kulo lonke isifunda.
I-Yuncang ingahlinzeka ngezinhlobo ezahlukene ze-PAC. Uma kudingeka, sicela uvakashele:Imininingwane ye-Polyaluminum Chloride
Isikhathi sokuthunyelwe: Novemba-05-2025