Simultaneous nitrogen and phosphorus removal device for slightly polluted water

The utility model discloses a simultaneous nitrogen and phosphorus removal device for slightly polluted water. The simultaneous nitrogen and phosphorous removal device for the slightly polluted water comprises a reactor (1), a mechanical lifting device (2), a water inlet pipe (3), a mud discharging bucket (5), a methanol channel (6), a mud discharging valve (7), a backwash flow channel (8), a backwash flow channel control valve (9), a lifting area (10), a mud layer reaction area (11), a mixing area (12), a water outlet (14), a sleeve (16) and a motor (17), wherein the upper part of the reactor (1) is of a cylindrical shape, and the bottom part of the reactor (1) is of a funnel shape; the mud discharging bucket (5) is arranged at the bottommost end of the reactor (1); the mechanical lifting device (2) is arranged along the direction of the central axis of the reactor (1) in the reactor (1). According to the simultaneous nitrogen and phosphorus removal device for the slightly polluted water, the problem that nitrogen and phosphorus of the slightly polluted water exceed standards is effectively solved; water body eutrophication caused by the fact that the nitrogen and the phosphorus exceed the standards can be prevented by removing the nitrogen and the phosphorus; the device is suitable for deep nitrogen and phosphorus removal treatment of landscape water bodies, such as rivers and lakes.