SYSTEM FOR RECYCLING SPENT SULFURIC ACID, METHOD FOR RECYCLING SULFURIC ACID WASTE, AND RECYCLED SULFURIC ACID

摘要

A system for recycling a spent sulfuric acid wherein a spent sulfuric acid is discharged or recovered in a discharge source (A), is transferred by a moving article (B), and then is used in a user (C), characterized in that the measurement of the concentration and/or the adjustment of the concentration of said sulfuric acid are carried out in at least one of the a discharge source (A), the moving article (B) and the user (C); a method for recycling a spent sulfuric acid, characterized in that a spent sulfuric acid waste discharged or recovered in a discharge source (A) is reused as a mixture thereof with at least one of an aqueous hydrogen peroxide solution and water; and a recycled sulfuric acid obtained by using the system or the method. The system and/or the method allow the improvement of added values of a spent sulfuric acid and the effective use of the acid at a site different from its discharge source, independently of their geographical conditions and the like.