Ukuthuthukiswa Kobuchwepheshe Bokukhipha Usawoti Emanzini Olwandle
I-Pendahuluan
Inkinga yamanzi ahlanzekile ingenye yezinselelo ezinkulu ezibhekene nomhlaba ngekhulu lama-21. Njengoba inani labantu emhlabeni wonke likhula futhi kukhula idolobha, isidingo samanzi ahlanzekile okusetshenziswa, ezolimo, kanye nezimboni siyanda. Kwezinye izindawo zomhlaba, izinsiza zamanzi ahlanzekile zilinganiselwe noma azikho nhlobo. Ngakho-ke, ubuchwepheshe bokukhipha usawoti emanzini olwandle buvele njengesixazululo esingaba khona sokunikeza amanzi ahlanzekile avela emthonjeni ongapheli: ulwandle. Lesi sihloko sizoxoxa ngentuthuko kanye nokusungula izinto ezintsha kubuchwepheshe bokukhipha usawoti emanzini olwandle, kanye namathuba kanye nezinselelo ezibhekene nokusetshenziswa kwawo.
Umlando Wokuthuthukiswa Kokukhipha Usawoti Emanzini
Ubuchwepheshe bokususa usawoti emanzini akuwona umqondo omusha. Umkhuba wokususa usawoti emanzini uqala eGrisi naseRoma lasendulo. Ngaleso sikhathi, abantu bomisa amanzi olwandle ezitsheni bese beqoqa umusi ophumayo ukuze bakhiqize amanzi amasha. Kodwa-ke, le mizamo yayisalinganiselwe kakhulu ngomthamo nokusebenza kahle. Njengoba ubuchwepheshe buthuthuka, izindlela zokususa usawoti emanzini zaba yinkimbinkimbi futhi zisebenza kahle.
Maphakathi nekhulu lama-20, ubuchwepheshe bokususa usawoti emanzini baqala ukunakwa kakhulu, ikakhulukazi emazweni aseMpumalanga Ephakathi acebile ngowoyela kodwa angenayo imithombo yamanzi ahlanzekile. Enye yezindlela ezindala kakhulu zokususa usawoti emanzini, ezisasetshenziswa nanamuhla, i-multi-stage flash distillation (MSF). Lobu buchwepheshe busebenzisa ukushisa ukuhwamukisa amanzi olwandle bese buhlanganisa umhwamuko ube ngamanzi ahlanzekile.
Izindlela Zanamuhla Zokususa Usawoti
Njengamanje, kunezindlela eziningana eziyinhloko ezisetshenziswa ekususeni usawoti emanzini olwandle:
1. I-Reverse Osmosis (RO)
I-reverse osmosis iyindlela ethandwa kakhulu futhi isetshenziswa kabanzi emazweni amaningi. I-reverse osmosis isebenzisa i-membrane engena kancane ukuze ihlunge usawoti kanye nezinye izinto ezingcolisayo ezivela emanzini olwandle. Amanzi olwandle adonswa nge-membrane ngomfutho ophezulu, lapho amanzi ahlanzekile edlula khona kuyilapho usawoti kanye nezinye izinto ezingcolisayo zisekhona. Ubuchwepheshe be-reverse osmosis buyaqhubeka nokukhula ngezinto ezintsha ze-membrane kanye nokuthuthukiswa kokusetshenziswa kahle kwamandla, okwenza kube nokuncintisana okukhulu ngokwezindleko zokusebenza.
2. Ukuhluzwa kwe-Multi-Stage Flash (MSF)
Le ndlela ibilokhu isetshenziswa isikhathi eside futhi isalokhu ingenye yezindlela ezivelele zokususa usawoti emanzini, ikakhulukazi esifundeni sasePersian Gulf. I-MSF isebenza ngokushisa amanzi olwandle aze abile ngezigaba eziningana ezahlukene, bese ifaka umusi ophumayo emanzini ahlanzekile. Nakuba idinga amandla amaningi ukushisa amanzi, i-MSF inikeza izinzuzo zokuthembeka kanye nekhono lokucubungula amanzi amaningi.
3. Ukuhluzwa Kwe-Thermal Okunemiphumela Eminingi (i-MED)
I-Multi-effect Thermal Distillation ingenye indlela esebenzisa ukushisa ukuhwamukisa amanzi olwandle. Ubuchwepheshe be-MED busebenzisa ukuhwamukisa kwamanzi olwandle okunemiphumela eminingi, okusho ukuthi amanzi olwandle ayashiswa futhi aguqulwe abe ngumhwamuko ngokucindezela okuphansi ochungechungeni lwezigaba. Le ndlela yemiphumela eminingi ikhulisa ukusebenza kahle kwamandla uma kuqhathaniswa ne-single-stage distillation.
4. I-Electrodialysis (ED)
I-Electrodialysis isebenzisa i-membrane ekhetha ama-ion kanye nensimu kagesi ukuhlukanisa usawoti emanzini olwandle. Le membrane ivumela ama-ion amahle (ama-cation) nama-ion angalungile (ama-anion) ukuthi adlule kodwa ivimba amanye ama-molecule amanzi. I-Electrodialysis isetshenziswa kakhulu emanzini anosawoti omncane, njengamanzi anosawoti omningi, futhi ayisetshenziswa kakhulu emanzini olwandle anosawoti omningi.
Izinto Ezintsha Zakamuva Kubuchwepheshe Bokususa Usawoti
Ukusungula izinto ezintsha kuyaqhubeka nokuthuthukisa ubuchwepheshe bokukhipha usawoti emanzini, okwenza inqubo isebenze kahle futhi yonge imali. Ezinye zezinto ezintsha zakamuva zifaka:
1. Izinto Ezintsha Ze-Membrane
Ukusetshenziswa kwezinto ezintsha ze-membrane njenge-graphene kanye nama-carbon nanotubes kunamandla okwandisa ukusebenza kahle kanye nomthamo wezinhlelo ze-RO. Lezi zi-membrane ziqinile, zihlala isikhathi eside, futhi zinikeza amakhono okuhlunga angcono kakhulu kunezinto ze-membrane ezivamile.
2. Ukukhishwa kukasawoti okusekelwe emandleni avuselelekayo
Enye yezinselelo ezinkulu zobuchwepheshe bokususa usawoti emanzini ukusetshenziswa kwawo kwamandla aphezulu. Ubuchwepheshe obusha ekusetshenzisweni kwemithombo yamandla avuselelekayo njengamandla elanga nomoya ukuze kunikezwe amandla izinhlelo zokususa usawoti emanzini kuyizinto ezigxilwe ocwaningweni. Isibonelo, amaphrojekthi okususa usawoti emanzini asebenzisa amandla elanga eMpumalanga Ephakathi abonise imiphumela ethembisayo ekunciphiseni izindleko zamandla.
3. Ukusetshenziswa Kwezinhlelo Ezihlanganisiwe
Ukuhlanganisa izindlela ezahlukene zokususa usawoti emanzini ukuze kwakheke uhlelo oluhlanganisiwe kungandisa ukusebenza kahle kwenqubo yokususa usawoti emanzini. Isibonelo, ukuhlanganisa i-RO ne-MED kungasebenzisa ukushisa okweqile okuvela ohlelweni lwe-RO ukwandisa ukusebenza kahle kokuhwamuka kwamanzi ohlelweni lwe-MED.
4. Izinhlelo Zokuqapha Nokulawula Ezihlakaniphile
Ukusetshenziswa kobuchwepheshe bedijithali njenge-Internet of Things (IoT), i-Big Data, kanye ne-artificial intelligence (AI) ekuphathweni nasekuqapheni izinhlelo zokususa usawoti emanzini kusiza ukuthuthukisa ukusebenza nokugcinwa kwazo. Lezi zinhlelo zingabikezela izinkinga ngaphambi kokuba zenzeke futhi zilungise ngokuzenzakalelayo ukusebenza ukuqinisekisa ukusebenza kahle okukhulu.
Amathuba kanye nezinselele
Okungenzeka
1. Imithombo Yamanzi Engenamkhawulo: Ulwandle luhlinzeka ngamanzi angenamkhawulo futhi ukukhipha usawoti emanzini kuvumela ukusetshenziswa kwalo mthombo ukuhlangabezana nezidingo zamanzi ahlanzekile, ikakhulukazi ezindaweni lapho amanzi engekho khona.
2. Ukuzimela Kwamanzi: Amazwe noma izifunda ezinobunzima bokuthola imithombo yamanzi ahlanzekile yemvelo zingakhulisa ukuzimela kwazo kwamanzi, ngaphandle kokuthembela ezintweni ezivela kwezinye izifunda.
3. Intuthuko Yomnotho: Ukutholakala kwamanzi ahlanzekile kungakhuthaza ukutshalwa kwezimali kanye nentuthuko yomnotho ezindaweni ezinemithombo yamanzi elinganiselwe.
Inselele
1. Izindleko Zamandla: Ukusetshenziswa kwamandla aphezulu kungenye yezithiyo ezinkulu kubuchwepheshe bokukhipha usawoti emanzini. Imizamo yokusebenzisa imithombo yamandla avuselelekayo isesesigabeni sokuthuthukiswa futhi ayikahlanganiswa ngokugcwele.
2. Umthelela Kwezemvelo: Inqubo yokukhipha usawoti emanzini ikhiqiza amanzi anosawoti njengomkhiqizo olandelayo. Ukulahlwa kwala manzi anosawoti kungalimaza imvelo yasolwandle uma kungaphathwa kahle.
3. Ingqalasizinda Ethuthukisiwe Nebiza Kakhulu: Ukwakha nokunakekela izikhungo zokususa usawoti kudinga ukutshalwa kwezimali okukhulu kanye nabasebenzi abanamakhono.
Isiphetho
Ukuthuthukiswa kobuchwepheshe bokukhipha usawoti emanzini olwandle kuyisisombululo esisha senselelo yomhlaba wonke yokuntuleka kwamanzi ahlanzekile. Intuthuko kwezobuchwepheshe be-membrane, ukusetshenziswa kwamandla avuselelekayo, kanye nezinhlelo zokuphatha ezihlakaniphile kuholele imboni yokukhipha usawoti ekusebenzeni kahle okukhulu nasekuzinzeni. Ngenkathi izinselelo ezifana nezindleko zamandla kanye nemiphumela yemvelo zisekhona, izinzuzo zesikhathi eside zokuhlinzeka ngomthombo wamanzi ahlanzekile onokwethenjelwa nongenamkhawulo zingaba zibalulekile. Ukuqhubeka nokusungula izinto ezintsha kanye nokubambisana komhlaba wonke kuzoba yisihluthulelo sokuthuthukisa ubuchwepheshe bokukhipha usawoti ekusaseni eliqhakazile nelizinzile.
