Energy-saving and efficient MBR process operation method in off-peak operation

The invention relates to an energy-saving and efficient MBR process operation method in off-peak operation, which belongs to the technical field of water treatment and comprises the following steps: sewage to be treated is input into an MBR reaction tank, and the MBR reaction tank adopts an alternate operation mode of energy-saving operation and conventional operation: energy-saving operation is carried out in peak and flat periods of electricity consumption, and normal operation is carried out in valley periods of electricity consumption. According to the MBR process operation method, three periods of power utilization peak, flat and valley are combined, wherein the energy-saving operation is adopted in the peak and flat periods of power utilization, and normal operation is recovered in the valley period, so that through alternate operation in different periods, compared with a traditional MBR operation process, the electric quantity can be saved by 40% while the sewage treatment capacity is met. 一种错峰运行节能高效的