Waste gas treatment system for paint spray booth

The utility model discloses a waste gas treatment system for a paint spray booth. The waste gas treatment system comprises waste gas pretreatment equipment arranged in the paint spray booth and waste gas purification equipment arranged outside the paint spray booth, the waste gas pretreatment equipment is provided with a paint mist filter, a rotational flow plate spray tower and an activated carbon adsorber which are connected in sequence; the input end of the paint mist filter is used for adsorbing waste gas in the paint spray booth, the output end of the paint mist filter is connected with the input end of the rotational flow plate spray tower through a first gas outlet pipeline, the waste gas purification equipment comprises a paint decomposition device and a UV photolysis waste gas purifier, and purified waste gas is discharged through the output end of the UV photolysis waste gas purifier. According to the system, the waste gas pretreatment equipment and the waste gas purification equipment are arranged,