METHOD OF TREATING WASTEWATER AND APPARATUS FOR TREATING WASTEWATER

摘要

PURPOSE: A drainage treatment method and a drainage treatment apparatus are provided to selectively collect phosphoric acid ions from drained water by ion-exchanging the phosphoric acid ions with an anion exchanging resin. CONSTITUTION: Acidic drainage is in contact with an anion exchange resin. An ion-exchanging process is implemented with respect to nitrate ions, sulfate ions, and iodide ions which are contained in drained water. The drained water is in contact with the anion exchange resin. Phosphoric acid ions are ion-exchanged with the anion exchange resin, and the phosphoric acid ions are collected.