Sewage treatment device

The utility model relates to a sewage treatment device, including fluidized bed reactor, sedimentation tank and pressure filter, fluidized bed reactor includes and is connected with sewage inlet tubeand thick water outlet tube respectively in the bottom of casing by the open casing in top, is equipped with the import of ferrous sulfate solution, backward flow import and the import of hydrogen peroxide solution solution on the sewage inlet tube, and thick water outlet tube is connected to the sedimentation tank is close to in the casing in the uncovered first body that is the taper that is equipped with in top, and the top through connections of first body has the second body, and is equipped with the water conservancy diversion body at the outside of second body cover, be equipped with first clear water overflow tank at the top of casing, be equipped with the aeration equipment who links to each other with outside air -blower in the bottom of casing, be equipped with second clear water overflow tank at the to