Method for enriching zirconium and titanium from waste acid discharged in zirconium oxychloride production

The invention relates to comprehensive utilization of waste acid resources, and particularly discloses a method for enriching zirconium and titanium from waste acid discharged in zirconium oxychloride production. The technological process mainly comprises the steps that organic acid or organic acid salt is added into the waste acid to enrich zirconium and titanium, effective separation of zirconium, titanium and other elements such as sodium, iron, aluminum and yttrium in the waste acid can be realized, the obtained enriched product can serve as a secondary raw material for extracting zirconium and titanium and is directly applied to an existing zirconium oxychloride technology, and the obtained enriched product can also be used for resource comprehensive utilization of the waste acid after scandium extraction by a solvent extraction method. Compared with reported extraction and phosphate and phosphoric acid precipitation methods, the method has the advantages of being simple in process and high in enrichment