Ukuhlanjululwa Kwamanzi Angcolile Embonini Yezingubo: Umhlahlandlela Ophelele Wezobunjiniyela
Kwadalwa ngo 2024.03.23
Ukwelashwa Kwamanzi Angcolile Embonini Yezindwangu: Umhlahlandlela Ophelele Wezobunjiniyela
Amanzi amdaka ezindwangu ayaziwa ngokuba yinkimbinkimbi, aboniswa yi-Chemical Oxygen Demand (COD) ephezulu, umbala omkhulu, i-pH ephezulu, kanye nezinga eliphezulu lama-surfactant nosawoti. Ukwelashwa okuphumelelayo kudinga indlela ehlanganisiwe, enezigaba eziningi—kushintsha kusukela ekususweni kwezinto eziqinile eziyisisekelo kuya ekubuyiseleni okusekelwe emakhemikhali nama-membrane. Ezikhungweni zesimanje, umgomo uvame ukuba yi-Zero Liquid Discharge (ZLD), okudinga ukuhlanganiswa okuyinkimbinkimbi kobuchwepheshe bokwelashwa obuyisisekelo, obuyesibili, nobuyesithathu.
1. Indlela Yokugeleza Yokwelashwa Okuhlanganisiwe
Amanzi amdaka ezindwangu ayikho indlela eyodwa angalashwa ngayo. Indlela ejwayelekile embonini ihlanganisa inqubo enezigaba eziklanyelwe ukwehlisa izinto ezingcolisa amanzi isinyathelo ngesinyathelo.
A. Ukwelashwa Okuyisisekelo (Physicochemical)
Isigaba esiyisisekelo sibalulekile ekususweni kwezinto eziqinile ezintantayo nasekuphazamiseni ukuzinza kwemibala ye-colloidal.
● Ukulinganisa Nokungathathi-hlangothi: Imfucuza yendwangu iyahlukahluka kakhulu. Amathangi amakhulu okulinganisa ayadingeka ukuze kuqiniswe ukuhamba futhi kulinganiswe amazinga e-pH ngaphambi kokwelashwa kwamagciwane.
● Ukuhlanganisa Nokwakha Amagobolondo: Indlela ephumelela kakhulu yokukhipha izinto eziyisimiso kanye nemibala engagayeki. Izinto zokuhlanganisa (njenge-Aluminum Sulfate noma i-Ferric Chloride) zikhipha izintambo kumakhemikhali ombala, okubangela ukuthi zihlangane (zakhe amagobolondo) bese zihlafunwa.
B. Ukwelashwa Kwesibili (Amagciwane)
Lesi sigaba sigxila kumthwalo we-organic (BOD/COD).
● Inqubo ye-Activated Sludge (ASP): Yindlela ejwayelekile embonini yemisebenzi emikhulu. Amagciwane anciphisa into ye-organic ethangini elingenisa umoya.
● I-Membrane Bioreactor (MBR): Indlela yokusebenza ephezulu esikhundleni samatshwayo ajwayelekile. Ihlangene nokubola kwamagciwane nokuhlunga kwama-membrane (i-micro/ultrafiltration). Ama-MBR akhiqiza amanzi asezingeni eliphezulu afanele ukusetshenziswa kabusha futhi adinga indawo encane.
C. Ukwelashwa Okwesithathu (Okuthuthukile)
Kudingeka ukuze kukhishwe umbala, kuncishiswe usawoti, nokusetshenziswa kabusha.
● Izindlela Zokuhlanganisa Eziphambili (AOPs): Ubuhlakani obufana ne-Fenton’s Reagent, i-Ozonation, noma i-UV/H2O2 busetshenziselwa ukwehlukanisa imibala eqinile (engaboli kalula). Lezi zindlela zikhiqiza ama-hydroxyl radicals ashisa amamolekyuli ombala, aqede umbala emanzini ngempumelelo.
● Ukuhlunga Ngezicubu (RO/NF): I-Reverse Osmosis (RO) kanye ne-Nanofiltration (NF) kubalulekile ekususeni izinhlaka ezincibilikile futhi kufezekise ukutholwa kwamanzi asezingeni eliphezulu.
2. I-Matrix Eqhathanisayo: Ukusebenza Kahle Kwendlela Yokwelapha
Onjiniyela kufanele balinganise izindleko zokusebenza (OPEX) nezimfuneko zokuhambisana nokukhishwa.
Indlela | Okuhlosiwe Okungcolisa Amanzi | Ukuphumelela | Izindleko/Ubunzima |
Ukuhlanganisa/Ukwakha Amagobolondo | Izinto Eziyisimiso / Imibala Engagayeki | Kulinganiselwe | Kuncane |
Amagciwane (MBR) | I-Organic COD / BOD | Kuningi | Kulinganiselwe/Kuningi |
Ukwelashwa nge-Ozone (AOP) | Umbala / Imibala Engagayeki | Kuningi Kakhulu | Kuningi |
I-Reverse Osmosis (RO) | Izinto Eziyisimiso Ezihlangene (TDS) | Kukuhle Kakhulu | Kuningi |
3. Izinto Ezibalulekile Okufanele Zicatshangelwe Ekusebenziseni
Inkinga "Engavumi Ukuguquka"
Imibala eminingi yesimanje eyenziwa ngokwenziwa yakhelwe ngokukhethekile ukuba imelane nokucwazimula (ngokukhanya noma ukuwashwa). Ngenxa yalokho, ngokuvamile imelana namagciwane ajwayelekile. I-AOPs (Advanced Oxidation Processes) ayikho indaba uma indawo ihlose ukususa umbala ngezinga eliphezulu.
Ukuphathwa Kwe-Sludge
Umphumela omkhulu wokwelashwa kwamanzi amdaka ezindwangu yi-sludge yamachibi. Ngoba ingaqukatha imibala ehlanganisiwe, amatshe asindayo, noma ama-surfactants, kufanele iphathwe njengemfucuza yezimboni. Izitshalo zesimanje zisebenzisa kakhulu izinsimbi zokukhipha amanzi ku-sludge ukunciphisa ivolumu nezindleko zokulahla.
Ukutholwa Kabusha Kwezinsiza & ZLD
Ngenxa yokwanda kokushoda kwamanzi, izindawo eziningi zezindwangu ziyaqhubekela ku-Zero Liquid Discharge (ZLD). Lokhu kuhilela:
1. Ukugxilisa imifudlana kadoti kusetshenziswa i-RO.
2. Ukubilisa usawoti osalayo (kusetshenziswa ama-Multi-Effect Evaporators noma ama-Agitated Thin Film Dryers).
3. Ukuthola usawoti oqinile namanzi ahlanzekile.
4. Imibuzo Evame Ukubuzwa (FAQ)
Q: Kungani ukususa umbala kunzima kangaka emanzini amdaka ezindwangu?
A: Imibala yesimanje yizakhiwo zamakhemikhali eziyinkimbinkimbi eklanyelwe ukuba zihlale isikhathi eside. Amagciwane emvelo avame ukwehluleka ukugaya lezi zakhiwo, ngakho-ke ziyadlula ezinhlelweni ezijwayelekile zingashintshi. I-Advanced Oxidation (AOPs) iyadingeka ukuze kuphulwe izibopho zamakhemikhali zesakhiwo sombala.
Q: Ingabe ukwelashwa kwamagciwane kwanele esitshalweni sezindwangu?
A: Kancane. Ngenkathi ukwelashwa kwamajubane kubhekana nomthwalo we-organic (BOD), ngokuvamile kuhluleka ukususa umbala namasawoti ancibilikile. Inhlanganisela yokwelashwa kwamajubane elandelwa ukuhlunga kwe-tertiary (RO/NF) ngokuvamile iyadingeka ukuze kuhlangatshezwane namazinga esimanje okukhipha amanzi.
Q: Yini indlela esebenza kahle kakhulu ngokomnotho yokuthuthukisa uhlelo olukhona?
A: Ukwenza kahle isigaba sokuqala sokuhlanganisa ngokuvamile kunikeza inzuzo enkulu ekutshalweni kwezimali. Ngokuthuthukisa ukunemba kokudonswa kwamakhemikhali, unciphisa umthwalo ezinhlelweni zamajubane nezamajubane ezilandelayo, wandise kakhulu impilo yamajubane futhi unciphise ukusetshenziswa kwamakhemikhali.
Ukwelashwa okusebenzayo kwamanzi amdaka ezindwangu kuyisiyalo sobunjiniyela esiguqukayo esihlanganisa izixazululo zemishini, zamagciwane, namakhemikhali athuthukile. Ngokudlulela kusukela ekuhlaliseni okulula kuya kumalungiselelo ahlanganisiwe we-MBR kanye ne-AOP, izindawo zingakwazi ukuhlangabezana nemithetho eqinile yezemvelo kuphela, kodwa futhi zikwazi ukubuyisa amanzi, kunciphisa ukusetshenziswa okuphelele kanye nezindleko zokusebenza.
Ngabe usezigabeni zokuklama isikhungo esisha sokwelashwa kwamanzi amdaka ezindwangu, noma ngabe ufuna ukuthuthukisa isikhungo esikhona ukuze uthole amazinga aphezulu okubuyisa amanzi?
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