Hoʻokaʻawale ʻia ke kaʻina hana hoʻomaʻemaʻe i ʻekolu mau ʻanuʻu: ʻO ka hoʻomaʻamaʻa mua ʻana: ka mālama kino, ma o ka hoʻomaʻamaʻa mechanical, e like me ka grille, sedimentation a i ʻole ka lele ʻana o ka ea, e wehe i nā pōhaku, ke one a me ka ʻiliʻili, ka momona, ka momona, a me nā mea ʻē aʻe i loko o ka wai. Lapaʻau lua: lapaʻau biochemical, po...
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