No, the aeration time required for strains in high-temperature sbr pool in summer is not as long as possible. When the amount of bacterial aeration in sbr tank is too large, the degree of nitrification increases, nitrifying bacteria multiply, COD is consumed by heterotrophic microorganisms, and COD is greatly reduced. However, denitrifying bacteria are also heterotrophic microorganisms, and COD is also needed in the process of denitrification, which leads to the decline of denitrification ability and high TN in effluent. SBR has good nitrogen and phosphorus removal effect, and can produce anaerobic, anoxic and aerobic by intermittent operation.