The invention relates to a radially combined multistage
ozone air floatation device. The radially combined multistage
ozone air floatation device comprises an inner
barrel cylinder and an outer
barrel cylinder which share the bottom surface, wherein an annular water collecting
pipe is arranged at the bottom of the inner
barrel cylinder and the outer barrel cylinder, water collecting holes formed in the annular water collecting
pipe are distributed in the inner barrel cylinder and the outer barrel cylinder respectively, the inner barrel cylinder is sequentially a
contact zone and a separation zone from the bottom to the top, the top of the inner barrel cylinder is open, the top of the outer barrel cylinder is closed, a
slag scraping device is arranged in front of the top of the inner barrel cylinder and the outer barrel cylinder, an
ozone oxidation zone is arranged between the inner barrel cylinder and the outer barrel cylinder, and an
aeration disc is arranged at the bottom of the ozone
oxidation zone. The radially combined multistage ozone air floatation device has the advantages that an ozone air floatation unit and an ozone oxidation unit are radially combined, treatment device is optimized, floor area of equipment is reduced, and low
energy consumption deslagging is completed by virtue of rise and fall of liquid level; and by virtue of combination of a deslagging device and an overflow deslagging way, scum is thoroughly eliminated, and treatment efficiency of the multistage ozone air floatation device is improved.