The utility model discloses a waste liquid purification device for
acrylic coating, which belongs to the technical field of waste liquid purification equipment and comprises a disinfection tank, a
flocculation tank mounted on one side of the disinfection tank, a
sedimentation tank mounted on one side of the
flocculation tank, a
discharge tank mounted on one side of the
sedimentation tank, and a water injection
pipe fixedly connected to the other side of the disinfection tank. A filter plate positioned below the water injection
pipe is mounted on the inner side of the disinfection tank. Waste liquid enters the disinfection tank,
solid impurities in the waste liquid are filtered out, a
sodium hypochlorite solution is introduced into the disinfection mechanism so that the waste liquid can be disinfected and deodorized, the waste liquid enters the
flocculation tank through a first through hole through the arrangement of the flocculation tank and the
sedimentation tank, and a
polyaluminum chloride solution is introduced into the flocculation tank through the flocculation mechanism so that the waste liquid can be purified. A motor drives a stirrer to uniformly stir and then enters a sedimentation tank through a second through hole, flocculated
colloid sinks to the bottom of the tank, and when the
colloid is accumulated to a certain amount, a blow-off
pipe is opened, a first electric telescopic rod is started to push a push plate, and
colloid impurities are discharged.