| 摘要 |
PROBLEM TO BE SOLVED: To provide a processing method and a processing unit of dithionic acid ion-containing water capable of processing efficiently dithionic acid ion from the dithionic acid ion-containing water.SOLUTION: A processing method of dithionic acid ion-containing water includes an insolubilization processing step for mixing together dithionic acid ion-containing water, at least either of an iron compound and an aluminum compound, and a calcium compound, to thereby deposit dithionic acid ion as an insolubilized material, and a solid-liquid separation step for separating the insolubilized material from mixed liquor by solid-liquid separation.SELECTED DRAWING: None |
