Method for regulating and controlling single-stage autotrophic nitrogen removal performance

The invention belongs to the technical field of wastewater treatment, and particularly relates to a method for regulating and controlling single-stage autotrophic nitrogen removal performance. According to the method, the concentration ratio of phosphorus to ammonia nitrogen in the inlet water is optimized and adjusted after the biological filter reactor stably operates, the concentration ratio of phosphorus to ammonia nitrogen in the inlet water is increased by stages, and the proper concentration ratio of phosphorus to ammonia nitrogen is selected according to the denitrification effect of a process system in each stage; the biofilter reactor is promoted to enrich more aerobic ammonium oxidation bacteria and anaerobic ammonium oxidation bacteria, and meanwhile, the activity and growth of nitrifying bacteria are inhibited, so that the operation stability of the biofilter reactor is improved, the biofilter reactor keeps long-time biological nitrogen removal performance, the ammonia nitrogen conversion rate is