I-WRAS egunyazwe amavalvu esango amanzi okuphuza
Ivalvu esetshenziselwa ukufaka amanzi okuphuza iklanyelwe ukuthutha ngokuphepha kanye nokulawula ukugeleza kwamanzi aphuzwayo, ahlanzekile. Ukuze kuqedwe noma iyiphi ingozi yezempilo, amanzi kudingeka angangcoliswa. Kukho konke ukugeleza kwawo kusuka endaweni yokungena kuye kwenye, amanzi ahlangana nezingxenye ezahlukene njengamapayipi, okokufakwayo namavalvu. Ukungcola kwamakhemikhali, njengomthofu, kungase kube khona kumapayipi amanzi futhi kungase kungcolise amanzi okuphuzwa lapho kuthintana. Amaminerali, izinga lokushisa nokugeleza kwamanzi kungase kube nomthelela ekugqwaleni okuholela ekungcoleni emanzini okuphuza. Ngokufanayo, ukungcola okufana nama-nitrate, izibulala-zinambuzane, amagciwane, amagciwane angangena ohlelweni lokuphakelwa kwamanzi ngokuvuza kanye nezindawo zokuxhuma ezingezinhle. Ngakho-ke, imikhiqizo eklanywe ngokukhethekile futhi egunyazwe ukusetshenziswa namanzi aphuzwayo kuphela okufanele isetshenziselwe izicelo zamanzi okuphuza.
Isikhathi sokuthumela: Dec-17-2021