Ozone oxidation method for realizing gradient utilization of ozone

The invention discloses an ozone oxidation method for realizing gradient utilization of ozone. The method comprises the following steps that A, when an inlet valve of an ozone contact tank is opened,waste water enters a first gas-water contact area, a second gas-water contact area and a third gas-water contact area from water inlet pipes; B, a first aeration head and a second aeration head communicate with an ozone generator, ozone is released uniformly to the first gas-water contact area and the second gas-water contact area, a third aeration head communicates with the top of a second reaction region and a jet aerator, gas at the top of the ozone contact tank is introduced into the third gas-water contact area, then gas-liquid two-phase flow enters a first reaction region, the second reaction region and a third reaction region from the bottom of the first gas-water contact area, the bottom of the second gas-water contact area and the bottom of the third gas-water contact area, and the gas pressure of the ozo