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Ka wai inu mai kai kai

ʻO ka hoʻololi ʻana i ke aniau a me ka hoʻomohala wikiwiki ʻana o ka ʻoihana o ka honua a me ka mahiʻai i hana i ka pilikia o ka nele o ka wai hou e ulu nui ana, a ke hele a koʻikoʻi nei ka lako o ka wai hou, no laila ʻaʻole pōkole loa kekahi o nā kūlanakauhale kahakai i ka wai. Hāpai ka pilikia wai i kahi koi mua ʻole no ka haʻalele ʻana i ka wai kai. ʻO ka pono o ka membrane desalination pono kahi hana e komo ai ka wai kai i loko o ka membrane spiral semi-permeable ma lalo o ke kaomi, ua ālai ʻia ka paʻakai nui a me nā minelala i ka wai kai ma ka ʻaoʻao kiʻekiʻe a hoʻokahe ʻia me ka wai kai paʻa, a ke puka mai nei ka wai hou. mai kaʻaoʻao haʻahaʻa haʻahaʻa.

Wahi a ka National Bureau of Statistics, ʻo ka nui o nā kumuwaiwai wai wai ma Kina he 2830.6billion cubic mika i ka makahiki 2015, e helu ana ma kahi o 6% o nā kumuwaiwai o ka honua, ke kūlana ʻehā o ka honua. Eia naʻe, ʻo 2,300 cubic mika wale nō nā kumuwaiwai wai o kēlā me kēia capita, ʻo ia wale nō ka 1/35 o ka awelika o ka honua, a aia ka hapa o nā kumuwaiwai wai maoli maoli. Me ka hoʻonui o ka ʻoihana a me ka hoʻoneʻe ʻana, koʻikoʻi ka hoʻohaumia wai wai hou ma muli o ka wai hoʻoneʻe ʻenehana a me ka wai kai kūloko kūlanakauhale. ʻO ka desalination o ke kai e lilo i alakaʻi nui no ka hoʻopili ʻana i ka wai inu kiʻekiʻe. Hoʻohana ka ʻoihana desalination kai kai a Kina i nā helu no 2/3 o ka huina. I ka lā o Kēkēmapa 2015, ua kūkulu ʻia nā papahana desalination wai kai 139 a puni ka ʻāina, me ka nui o ka nui he 1.0265 miliona mau ton / lā. ʻIke ʻia ka wai ʻoihana ʻona no 63,60%, a me 35.67% ka wai noho. Hoʻohana nui ka papahana desalination honua i ka wai noho (60%), a ʻo 28% wale nō ka wai ʻoihana.

ʻO kahi pahuhopu nui o ka hoʻomohala ʻana i ka ʻenehana desalination kai e hōʻemi i nā kumukūʻai hana. I ka hoʻohui ʻana o nā kumukūʻai hana, helu ka ʻai uila i ka helu nui loa. ʻO ka hōʻemi ʻana i ka ikehu ka mea pono e hōʻemi ai i nā kumukūʻai desalination o ka wai kai.


Ka manawa Post: Nov-10-2020