High-efficiency treatment device for high-ammonia-nitrogen wastewater

The utility model relates to the field of sewage treatment, and provides an efficient treatment device for high-ammonia-nitrogen wastewater, which aims at solving the problems of complicated treatment and low denitrification efficiency of a multi-stage AO (Anaerobic Oxidation) process, and comprises an aeration tank, a gas stripping plug flow area, an overflowing settling area, a reflux aeration area and an effluent weir, the gas stripping plug flow area is provided with a sewage inlet, an inlet of the aeration tank is communicated with the gas stripping plug flow area, an outlet of the aeration tank is communicated with the overflowing settling area, an outlet of the overflowing settling area is simultaneously communicated with the backflow aeration area and the effluent weir, and an outlet of the backflow aeration area is also communicated with the gas stripping plug flow area. According to the invention, a short-cut nitrification and denitrification principle is adopted, nitrosobacteria are utilized to oxi