Oxygenation device for biological pretreatment from waterworks

The invention discloses an oxygenation device for biological pretreatment from waterworks. The device comprises a water pool, an air inlet pipe, adjustable aerating systems and adjustable air inlet valve banks, wherein the water pool is equalized into a plurality of cells; the length-depth ratio of single cell is 1:0.75 to 1:1.3; the air inlet pipe comprises an air inlet manifold and a plurality of air inlet branch pipes; each air inlet branch pipe correspondingly enters into one cell of water pool and is divided into a plurality of multiple gas distribution branch pipes in the water pool; one adjustable air inlet valve bank is arranged on each air inlet branch pipe; one set of adjustable aerating system is arranged in each cell of water pool and comprises multiple sections of aerating pipes which are arranged in a segmented way; each section of aerating pipe is connected with the gas distribution branch pipe corresponding to the section of aerating pipe. The oxygenation device for the biological pretreatment from the waterworks, provided by the invention, can be widely applied in a suspended filler biological contact oxidation pond; according to process requirements of the biological pretreatment, aeration strengths of various sections can form directional hydraulic circulation through regulation and combination, and hydraulic conditions are optimized.