| abstract |
A method for treating a denitration catalyst regeneration solution which is characterized by injecting, into a combustion gas generation furnace, a regeneration water or an aqueous oxalic acid regeneration solution formed while regenerating, with water or an aqueous oxalic acid solution, a denitration catalyst whose denitration performance has deteriorated or whose SO₂ oxidation performance has risen so as to recover the original performance of the catalyst. According to this method, a solution produced when a catalyst is regenerated can be economically treated. |