MBR (Membrane Bioreactor) biological membrane wastewater treatment device

The invention discloses an MBR (membrane bioreactor) biological membrane wastewater treatment device, and relates to the technical field of wastewater treatment devices, the MBR biological membrane wastewater treatment device comprises a purification tank, through use of a filter assembly, gas is sprayed to two sides of an MBR fiber bundle through a jet head, so that the MBR fiber bundle swings, and a lot of sludge adhered to the two sides of the MBR fiber bundle falls off; the jet head moves to the bottom of the fixed plate, so that the jetted gas rushes into the MBR fiber bundle, and much sludge adhered to the interior of the MBR fiber bundle falls off, thereby achieving the effect of cleaning the sludge adhered to the interior and exterior of the MBR fiber bundle, avoiding the situation that the sludge blocks small holes in the surface of the MBR fiber bundle to prevent water from penetrating through the MBR fiber bundle to cause a poor filtering effect, and improving the filtering efficiency of the MBR fi