Purification treatment device for circuit board etching waste liquid

The invention discloses a purification treatment device for waste etching liquid of a circuit board. The purification treatment device is characterized by comprising a water inlet pipe, a solar heating part, an intermittent pressurizing part, a water spraying and air sucking cover, a heat dissipation seat and a recovery device, the etching waste liquid is directly discharged into the water inlet pipe after being filtered; the water inlet pipe is communicated with an inlet of the solar heating component; waste etching liquid is preheated by the solar heating component and then enters the intermittent pressurizing component; the intermittent pressurizing part pressurizes the etching waste liquid and inputs the etching waste liquid into the water spraying and air sucking cover at set intervals; the water spraying and air suction cover covers the heat dissipation base, the surface temperature of the heat dissipation base is 200-300 DEG C, and the water spraying and air suction cover sprays etching waste liquid to