Pretreatment equipment for oil stains and SS in polishing solution wastewater

Pretreatment equipment for oil stains and SS in polishing solution wastewater comprises a stirring chamber, a cyclone separator and a separation chamber, a stirring device is arranged in the stirringchamber and comprises a vertically-arranged stirring shaft, an upper stirring paddle set and a lower stirring paddle set, and the upper stirring paddle set and the lower stirring paddle set are arranged on the stirring shaft; air enters the stirring chamber from the top of the stirring shaft and forms a gas-liquid mixture with the polishing liquid wastewater at the bottom of the stirring chamber;the upper stirring paddle set is arranged on the upper portion of the stirring chamber and used for primarily demulsifying polishing liquid, the lower stirring paddle set is arranged on the lower portion of the stirring chamber and used for further demulsifying polishing liquid waste water and conveying the gas-liquid mixture into the cyclone separator in the tangential direction, an SS outlet isformed in the bottom of the