Device for simulating iron-ammonia oxidation process of in-situ riparian zone soil and use method and application of device

The invention discloses a device for simulating the iron-ammonia oxidation process of in-situ riparian zone soil and use method and application of the device. The device comprises a cylindrical transparent cylinder and a halogen lamp arranged at the upper portion of the transparent cylinder which is of a double-layer structure, the inner layer is connected with a water storage box through a water pipe, and a constant flow pump and a water inlet valve are arranged on the water pipe; the outer layer is connected with a helium steel cylinder through an intake pipe, an annular sealing cover provided with a sealable outer layer is arranged above the outer layer, in-situ riparian zone soil 30-40cm in height is filled in the bottom of the outer layer, the outer layer is wrapped with tin foil paper from the outer side, an inner water outlet valve is arranged on the side wall of the inner layer, an outer water outlet valve is arranged on the outer wall of the outer layer, and a sediment sampling opening and a water sa