Sewage treatment equipment combining micro-nano bubbles and membrane bioreactor

The invention discloses sewage treatment equipment combining micro-nano bubbles and a membrane bioreactor, and belongs to the technical field of sewage treatment equipment. The equipment comprises anadjusting tank, an integrated sewage treatment device, a disinfection unit, a micro-nano bubble generator and a micro-nano bubble aerator, and the integrated sewage treatment device is sequentially provided with an anoxic zone, a first aerobic zone, a second aerobic zone and an MBR zone in the sewage treatment flow direction. The micro-nano bubble aerator is arranged at the bottoms of the first aerobic zone and the second aerobic zone, and the micro-nano bubbles are combined with the membrane bioreactor, so the treatment performance of the integrated sewage treatment device is improved, the hydraulic retention time is shortened, the occupied area is saved, the process is a low-energy-consumption and high-efficiency village and town domestic sewage treatment process, the removal rate of indexes such as nitrogen, ph