▎ 摘　　要

NOVELTY - Resource utilization method of phosphoric acid-contains waste sulfuric acid liquid involves preparing waste sulfuric acid solution contains phosphorus acid in target object, detecting phosphate content and sulfate content in phosphate, taking barium carbonate with amount of phosphate substance in target substance, adding acidic solution, fully stirring to prepare barium-carbonate slurry number one, taking phosphate substance of target material, adding acidic solution and fully stirring, slowly adding barium sulfate solution to target object to react, controlling pH of system at 6.5-7.5, separating solid and liquid to obtain primary filtrate, drying solid to obtain phosphate material, and performing reverse osmosis (RO) treatment on secondary filtrates to obtain chloride salt. USE - Resource utilization method of phosphoric acid-contains waste sulfuric acid liquid used in graphene industry fast development process for preparing graphene oxide. ADVANTAGE - The method enables to ensure processing of single ion and is not affected subsequent separation of other ions, and avoids presence of phosphoric acid separating effect of other ion, not only after processing single ion, also waste water reaches discharge standard; effectively finishes recovery of each ion according to specific order.