Ukwelashwa kwamanzi angcolile kuyinqubo ebalulekile yokuqinisekisa amanzi ahlanzekile naphephile okusetshenziswa ngabantu kanye nokuvikela imvelo. Izindlela zendabuko zokwelashwa kwamanzi angcolile ziye zathembela ekusetshenzisweniama-coagulant amakhemikhali, njengosawoti we-aluminium kanye ne-iron, ukususa ukungcola emanzini. Kodwa-ke, lokhuamakhemikhali okwelapha amanzi ezimboniniziyabiza, zidinga amandla amaningi, futhi zingaba nemiphumela emibi kwezemvelo.
Ngenhlanhla, kuvele ikhambi elisha emkhakheni wokuhlanza indle –ama-polyamine(PA). Ama-polyamine ayiqembu lamakhemikhali e-organic atholakala ngokwemvelo emangqamuzaneni aphilayo futhi anezakhiwo ezihlukile ezenza asebenze kahle kakhulu ekwelapheni amanzi amdaka. Ukusetshenziswa kwama-polyamine kuguqula insimu yokwelashwa kwamanzi amdaka futhi kunikeza ikhambi elihlala njalo nelisebenza kahle ezinseleleni zokungcola kwamanzi kanye nokuntuleka kwawo.
IShayina ingenye yabathengi abakhulu bamakhemikhali okwelapha amanzi emhlabeni, enesidingo esikhula ngokushesha sezixazululo zokwelashwa kwamanzi amdaka ezisebenzayo nezingabizi. Ukusetshenziswa kwama-polyamine embonini yokwelapha amanzi amdaka yaseShayina kuyathandwa ngenxa yokusebenza kwawo okuphezulu kanye nokusebenza kahle kwezindleko uma kuqhathaniswa namakhemikhali endabuko.
Ama-polyamine anezinzuzo eziningana ngaphezu kwamakhemikhali okwelapha amanzi ezimboni avamile. Enye yezinzuzo eziyinhloko ukuthi ahambisana kakhulu nokungcola okuhlukahlukene okutholakala emanzini angcolile, njengezinsimbi ezisindayo, udayi, kanye namakhemikhali e-organic. Ama-polyamine angawajiya futhi awahlanganise kahle la makhemikhali angcolile, okuholela ekususweni kwawo kalula emanzini. Le nqubo ithuthukisa kakhulu ukusebenza kahle kwenqubo yokwelapha amanzi angcolile, okuholela ekuphumeni kokungcola kwekhwalithi engcono.
Enye inzuzo yama-polyamine ukuthi adinga umthamo ophansi. Ama-polyamine angafinyelela izinga elifanayo lokususwa kokungcola njengamakhemikhali endabuko ngamanani amancane, okuholela ekongeni okukhulu kwezindleko zezitshalo zokuhlanza amanzi amdaka. Ngaphezu kwalokho, ukusetshenziswa kwama-polyamine kunganciphisa inani lodaka olukhiqizwa ngesikhathi senqubo yokwelapha, okunganciphisa kakhulu izindleko zokusebenza.
Ekuphetheni, ukusetshenziswa kwePA Ukwelashwa kwamanzi amdaka kuguqula insimu yokwelashwa kwendle futhi kunikeza ikhambi elizinzile neliphumelelayo ezinseleleni zokungcoliswa kwamanzi kanye nokuntuleka kwawo. Njengoba isidingo esikhulayo sezixazululo zokwelashwa kwamanzi amdaka ezisebenzayo nezingabizi eShayina, ukusetshenziswa kwama-polyamine embonini yokwelashwa kwamanzi amdaka kulindeleke ukuthi kwande eminyakeni ezayo, kuhlinzeke ngendawo ehlanzekile nephephile kubo bonke.
Isikhathi sokuthunyelwe: Ephreli-03-2023