POTABILIZATION METHOD AND APPARATUS FOR PRODUCING POTABLE WATER FROM DESALINATED SEAWATER

摘要

Provided are a method and apparatus for producing potable water by post-processing (post-treating) desalined water obtained by desalination of seawater through distillation or reverse osmosis. The method includes a carbon dioxide absorption process (30) of excessively supplying carbon dioxide into the desalinated water to absorb the carbon dioxide, a remineralization process of passing the desalined water into which cai'bon dioxide is absorbed through a limestone filter (42) in which limestone is filled to form calcium ions and bicarbonate ions, and a cai'bon dioxide exhaust process (50) of supplying air into the desalinated water passed through the remineralization process to exhaust the carbon dioxide with the air to obtain the potable water. Therefore, a TDS concentration of the desaiinated water obtained through a distillation method or a reverse osmosis method can be effectively increased to produce potable water, alkalinity of the potable water can be increased to prevent corrosion of a water distribution system, and the potable water can be produced with a simplified apparatus and low cost.