Ukwelashwa kwamanzi amdaka kuyinqubo ebucayi yokuqinisekisa amanzi ahlanzekile futhi aphephile wokusetshenziswa kwabantu futhi avikele imvelo. Izindlela zendabuko zokwelashwa kwamanzi we-wastewater zithembele ekusetshenzisweni kweAmakhemikhali anamakhemikhali, njenge-aluminium nosawoti wensimbi, ukususa okungokwemvelo emanzini. Kodwa-ke, leziAmakhemikhali entengo emboniniziyabiza, zinamandla, futhi zingaba nemithelela emibi yemvelo.
Ngenhlanhla, kwaqhamuka ikhambi elisha emkhakheni wokwelashwa kwendle -Ama-polyamine(PA). Ama-polyamines yiqembu lezinhlanganisela ze-organic ngokwemvelo ezitholakala kumaseli aphilayo futhi zinezakhiwo ezihlukile ezibenza baphumelele kakhulu ekwelashweni kwamanzi amdaka. Ukusetshenziswa kwama-polyamines kuguqula insimu yokwelashwa kwamanzi amdaka futhi kunikeze isixazululo esimeme futhi esisebenza kahle ezinseleleni zokungcoliswa kwamanzi nokuswelakala.
I-China ingesinye sabathengi abakhulu bamakhemikhali esela lamanzi emhlabeni, ngesidingo esikhula ngokushesha sezixazululo ezisebenzayo nezingabizi zokwelashwa kwamanzi. Ukusetshenziswa kwama-polyamines embonini yekwelashwa kwamanzi yaseChina kuthola ukuthengiswa ngenxa yokusebenza kwawo okuphezulu kanye nokusebenza kwezindleko kuqhathaniswa namakhemikhali endabuko.
Ama-polyamines anezinzuzo eziningana ngaphezulu kwamakhemikhali entuthuko endabuko wezokwelapha. Enye yezinzuzo eziphambili ubudlelwane babo obuphezulu bokungcola okuhlukahlukene okutholakala emanzini angcolile, njengezinsimbi ezisindayo, amadayi kanye namakhompiyutha aphilayo. Ama-polyamines angakwazi ukuqeda ngempumelelo futhi athuke lokhu kungcola, okuholela ekususeni kwabo okulula emanzini. Le nqubo ithuthukisa kakhulu ukusebenza kahle kwenqubo yokwelashwa kwamanzi amdaka, okuholela ekusebenzeni kwekhwalithi engcono.
Enye inzuzo yama-polyamines isidingo sabo esiphansi somthamo. Ama-polyamines angafinyelela ezingeni elifanayo lokususwa okungcolisayo njengamakhemikhali endabuko ngamanani amancane, okuholela ekugcinweni kwezindleko ezinkulu zezitshalo zokwelashwa kwamanzi amdaka. Ngaphezu kwalokho, ukusetshenziswa kwama-polyamines kunganciphisa inani le-sludge elenziwe ngesikhathi sokwelashwa, okungase kunciphise izindleko zokusebenza.
Ekuphetheni, ukusetshenziswa kwePA Ekwelashweni kwamanzi angcolile kuguqula insimu yokwelashwa kwendle futhi inikeze ikhambi elizinzile futhi elisebenzayo ezinselele zokungcoliswa kwamanzi nokuswelakala. Ngesidingo esikhulayo sezixazululo zokwelashwa kwamanzi okusebenzayo futhi ezingabizi kakhulu eChina, ukusetshenziswa kwama-polyamines emkhakheni we-Wastewater Treatment Fact kulindeleke ukuthi kwandise eminyakeni ezayo, kuhlinzekwe indawo ehlanzekile nephephile kubo bonke.
Isikhathi se-Pop: APR-03-2023