Underwater aeration device for heavy oil sewage activated carbon sludge and biochemical biofilm formation synergistic process and treatment method thereof

The invention belongs to the technical field of heavy oil sewage treatment, and discloses a heavy oil sewage activated carbon sludge and biochemical biofilm culturing synergistic process underwater aeration device and a treatment method thereof.The heavy backflow activated sludge of a biochemical system is sucked by a self-suction type dissolved air pump, meanwhile, air dissolution is conducted to form an aeration water body, and the aeration water body is connected through a pipeline; the high-speed and high-pressure air-dissolved water radiates water flow in the horizontal direction and dissipates small-aperture gas in the vertical direction in the underwater jet flow process, gas buoyancy and stirring between high-speed fluid are formed, biochemical process backflow is completed, and the high-speed and high-pressure air-dissolved water flows into the underwater jet flow aeration devices. Meanwhile, deposition of heavy activated carbon mud is prevented, and the deposited part can recover the flowing state i