Micro polluted water body treatment reactor and method thereof

The invention discloses a micro polluted water body treatment reactor and a method thereof and belongs to the field of micro polluted water body treatment. The micro polluted water body treatment reactor disclosed by the invention comprises a fluidized bed reaction zone, a separation zone, a fixed bed reaction zone and a sedimentation zone from bottom to top inside, wherein the cross section of the separation zone is gradually increased from bottom to top; the fluidized bed reaction zone comprises a packing layer and an aeration device; the aeration device is arranged below the packing layer;and the height H of the sedimentation zone is 1.0-1.3m. By adopting the reactor disclosed by the invention, through micro polluted water body treatment, the water body treatment effect can be improved, stable up-to-standard water quality is achieved, and in addition, the reactor has the advantages of being simple in operation, low in cost, good in impact resistance, high in pollution factor removal efficiency, and the lik