Idethi: Januwari 9, 2025
Indawo: Lima, PeruNjengoba isidingo se-aquaculture esimeme sikhula emhlabeni wonke, ukwethulwa kwezinzwa ze-chlorine ezicindezelayo njalo kuguqula izinqubo embonini. Lezi zinhlelo zokuqapha ezithuthukisiwe, eziqinisekisa izinga eliphezulu lamanzi ezindaweni ezifuywayo zasemanzini, ziyazuza ePeru, e-United States, nakwamanye amazwe, okuphawula ushintsho olukhulu endleleni izinhlanzi nokudla kwasolwandle okufuywa ngayo.
I-Chlorine ivame ukusetshenziswa e-aquaculture ukuze kubulawe amagciwane emanzini, ukuvimbela ukusabalala kwamagciwane kanye nokuqinisekisa impilo yezinhlobo zasemanzini. Kodwa-ke, inselele bekuwukugcina amazinga afanele e-chlorine ngaphandle kokubeka engcupheni ubuthi ezinhlanzini. Kulapho kudlala khona izinzwa ze-chlorine ezicindezela njalo. Ngokungafani nezinhlelo zokuqapha zendabuko, ezihlinzeka kuphela ngokufundwa ngezikhathi ezithile, lezi zinzwa zinikeza idatha eqhubekayo, yesikhathi sangempela ngamaleveli e-chlorine, okuvumela abalimi ukuthi benze izinguquko ezisheshayo njengoba kudingeka.
EPeru, lapho ukufuywa kwezilwane zasemanzini sekuyingxenye ebalulekile yomnotho, ukwamukelwa kwalezi zinzwa kubonakala kunenzuzo ikakhulukazi. Amapulazi amaningi ezinhlanzi asePeruvia, ikakhulukazi lawo agxile kuzimfanzi ne-tilapia, abike amazinga akhuphukayo okusinda kanye nekhwalithi yomkhiqizo kusukela ekuhlanganiseni kwezinzwa ze-chlorine ezincindezelwe njalo. "Sibone ukwehla kwamazinga okufa kwezinhlanzi ngo-30% kusukela sifake lezi zinzwa," kusho u-Eduardo Morales, umnikazi wepulazi lezimfanzi ePiura. "Impendulo yesikhathi sangempela isivumela ukuthi sisabele ngokushesha ezinguqukweni zekhwalithi yamanzi, okubalulekile."
Izinzuzo zalezi zinzwa ezithuthukisiwe azikhawulelwe ePeru. E-United States, imisebenzi yokufuywa kwezilwane zasemanzini ogwini nayo isebenzisa lobu buchwepheshe. UMichael Johnson, isazi sezinto eziphilayo zasolwandle kanye nomeluleki wezolimo zasemanzini ozinze eFlorida, wachaza, “Ngokuqapha njalo, amapulazi angakwazi ukusebenzisa i-chlorine ngokugcwele, ehlise izindleko futhi anciphise umthelela wendawo ezungezile.
Ngaphezu kwalokho, amazwe aseNingizimu-mpumalanga ye-Asia naseYurophu nawo abona izinzuzo zalezi zinzwa. EVietnam, lapho imboni yezimfanzi ichuma khona, abalimi basebenzisa ubuchwepheshe obuvumela ukuphathwa okungcono kwamazinga e-chlorine, okuholela ekuphepheni komkhiqizo okuthuthukisiwe kanye nokuncipha kwemfucuza. Khonamanjalo, amafemu ase-Europe ezolimo zasemanzini asebenzisa ubuchwepheshe obufanayo ukubhekana nemithetho ye-EU mayelana nezinsalela zamakhemikhali emikhiqizweni yezilwane zasolwandle.
Naphezu kokwamukelwa okuhle, ochwepheshe bayaqaphela ukuthi ukutholwa okubanzi kuzodinga imfundo kanye nokutshalwa kwezimali ekuqeqesheni abaqhubi bezilwane zasemanzini. “Ubuchwepheshe ngokwabo buqondile, kodwa ukuqonda indlela yokutolika nokwenza ngokuvumelana nedatha ekunikezayo kungaba inselele kwabanye abalimi,” kusho uDkt. Sara Tello, umcwaningi wezilwane zasemanzini eNyuvesi yaseFlorida. “Imihlangano yokucobelelana ngolwazi nemibukiso izobaluleka ekusizeni abalimi ezifundeni ezahlukene ukuthi basebenzise lobu buchwepheshe.”
Ukuhlanganiswa kwezinzwa ze-chlorine eziyinsalela yokucindezela njalo kuvula umnyango wentuthuko eyengeziwe ekuqaphelweni kwekhwalithi yamanzi. Amaqembu ocwaningo asevele ahlola ukuthi kungenzeka yini ukuhlanganisa lezi zinzwa namanye amathuluzi okuqapha imvelo, njenge-pH, izinga lokushisa, nezinzwa ze-ammonia, ukuze akhe izinhlelo eziphelele zokuqapha izinga lamanzi.
Njengoba imboni yezasemanzini ifuna ukulinganisa ukusebenza kahle kokukhiqiza kanye nomthelela wemvelo, ubuchwepheshe obufana nezinzwa ze-chlorine eziyinsalela yengcindezi buya ngokuya budingeka. Ukusebenzisana phakathi kwabalimi, abacwaningi, nabahlinzeki bezobuchwepheshe kuzobaluleka ekwakheni ikusasa lezinqubo ezisimeme zokufuywa kwezilwane zasemanzini emhlabeni jikelele.
Emazweni anjengePeru kanye ne-United States, lolu shintsho aluyona nje indaba yokuthuthukisa umkhiqizo kodwa futhi nokuvikela impilo yezigidi ezincike emfuyweni yasemanzini, ukuqinisekisa ukuthi zingachuma emakethe yomhlaba wonke edingeka njalo.
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Isikhathi sokuthumela: Jan-09-2025