Paint spraying circulating water treatment system and purifying technology thereof

The invention relates to the field of wastewater treatment equipment and specifically relates to a paint spraying circulating water treatment system. The circulating water treatment system comprises a circulating water tank for collecting the circulating water carrying paint particles and flowing out of a paint spraying chamber; the circulating water tank is connected with an extracting device for extracting the circulating water in the circulating water tank and conveying to next process; the extracting device is connected with a treatment device for treating the circulating water to reduce the paint particles in the circulating water; the treatment device enables the treated circulating water to flow back to the circulating water tank through a backflow pipeline. According to the invention, a novel paint spraying circulating water purifying technology is adopted, which is independent of an original paint spraying chamber circulating water treatment system; the original paint spraying chamber circulating wat