Storage regulation tank

The utility model discloses a storage regulation tank. The storage regulation tank comprises a storage regulation region, a reaction region, a flow deflection region and a settling region, wherein a water inlet box culvert is arranged in the storage regulation region, a stirrer is arranged in the reaction region, a water outlet and a mud discharging pipe are arranged in the settling region, and the reaction region, the flow deflection region and the settling region are all distributed at the upper end face of the storage regulation region; and a lift pump for conveying sewage into the reaction region from the storage regulation region is arranged between the reaction region and the storage regulation region, and the flow deflection region is arranged between the reaction region and the settling region and is used for guiding mixed liquid in the reaction region into the settling region. According to the storage regulation tank, after entering the storage regulation region, the sewage enters the reaction region