Titanium dioxide production acidolysis tail gas spray water treatment device

The utility model relates to an acidolysis tail gas spray water treatment device for titanium dioxide production, which is characterized in that a dilute wastewater pipe (4) is connected to a ferrous dissolving tank (5), a liquid outlet at the bottom of the ferrous dissolving tank (5) is connected with a ferric sulfate delivery pipe (8) through a delivery pump (6), and the ferric sulfate delivery pipe (8) is connected to a regulating water tank (9); a concentrated wastewater pipe (2) is connected to the adjusting water tank (9); a bottom ditch (17) is formed in the bottom of the adjusting water tank (9), the end of a slurry output pipe (12) is arranged in the bottom ditch (17), and the tail end of the slurry output pipe (12) is connected with a slurry discharge pipe (15) through a slurry pump (14). And sodium sulfite in the tail gas adjusting water tank is oxidized into sodium sulfate by utilizing byproducts generated by the production line, so that the COD of the spraying water is reduced, and up-to-standard