Method for efficiently treating ammonia-nitrogen wastewater by enriching dominant microorganisms

The invention provides a method for efficiently treating ammonia-nitrogen wastewater by enriching dominant microorganisms, the method efficiently treats ammonia-nitrogen wastewater by enriching Acidobacteria and Chlorobacteria in an integrated submerged biofilter (SBAF reactor), the method comprises the steps of sludge inoculation, sludge biofilm formation, system starting and stable operation, and in the system starting process, in the SBAF reactor, the Acidobacteria and the Chlorobacteria are separated from the SBAF reactor, the Acidobacteria and the Chlorobacteria are separated from the SBAF reactor, and the Acidobacteria and the Chlorobacteria are separated from each other. Microbial community distribution in sludge in an integrated submerged biological filter (SBAF reactor) is taken as a mark of successful starting of the system, operation parameters of the method are controlled, and during stable operation, the average removal rate of ammonia nitrogen is 96.5%, and the average removal rate of total nitr