Method for accelerating short-cut nitrification starting through sludge pretreatment

The invention relates to the technical field of environmental protection and sewage treatment, and particularly discloses a method for accelerating shortcut nitrification starting through sludge pretreatment. The method comprises the following steps: (1) in the presence of low-ammonia-nitrogen water, pretreating activated sludge in a biological reaction unit for 1-20 days to obtain starved sludge; wherein the ammonia nitrogen concentration of the low ammonia nitrogen water is 0-10 mg/L; the dissolved oxygen concentration of the pretreatment is controlled to be 0-4 mg/L; and (2) contacting ammonia nitrogen sewage with the starved sludge for short-cut nitrification to obtain effluent. According to the method for accelerating short-cut nitrification starting through sludge pretreatment, quick starting and steady-state maintenance of short-cut nitrification can be achieved through starvation coupling oxygen limiting regulation, the method has the advantages of being good in ammonia oxidation rate, high in nitrite