The invention relates to a swirling aggregation air flotation
degreasing column, which comprises a lower air flotation column, an upper air flotation column and a swirling dissolved air tank, wherein a swirling air flotation oil collection tank, a floating residue discharging port, a swirling air flotation column outer cylinder, a center swirling air flotation column, a water distribution pore plate, a support
pipe, an egg tray shaped disk sheet aggregation filler, a support
pipe and an aggregation inclination plate filler are arranged in the upper air flotation column, the swirling air flotation column outer cylinder is connected to the swirling dissolved air tank, a baffle, a dissolved air release device, a separation plate, a
sludge collection cone cylinder, a water purification area, a water outlet, a dissolved
air water outlet and a venting port are arranged in the lower air flotation column, the dissolved air release device is communicated to the swirling dissolved air tank, the bottom portion of the
sludge collection cone cylinder is provided with a
precipitation cylinder, the bottom portion of the
precipitation cylinder is communicated to the water inlet of the center swirling air flotation column, the
precipitation cylinder is communicated to the water purification area, the water purification area is communicated to the lower air flotation column, and the dissolved
air water outlet is connected to the swirling dissolved air tank. According to the present invention, the swirling aggregation air flotation
degreasing column has advantages of simple structure, high
degreasing efficiency, high suspended
solid removal efficiency, fine and uniformly-dispersed air bubbles, and the like.