| 摘要 |
<p>PROBLEM TO BE SOLVED: To remove, both efficiently and effectively from an effluent including, as fluorine-containing substances, fluorine ions and tetrafluoroborate ions, these fluorine ions and tetrafluoroborate ions.SOLUTION: The water treatment method of an embodiment includes a first step of obtaining a body of primarily treated water by introducing, into a reaction tank, an effluent including fluorine ions and tetrafluoroborate ions and removing the fluorine ions from the effluent and a second step of adjusting the pH of the primarily treated water within a range of 2.5-5 by introducing the primarily treated water into a pH adjusting tank and adding a pH adjuster to the primarily treated water. This method additionally includes a third step of obtaining a body of secondarily treated water by permeating, through a resin column filled with an aminopolyol-type chelate resin, the pH-adjusted primarily treated water and adsorbing and removing the tetrafluoroborate ions included within the primarily treated water.</p> |
