IMMERSION TYPE MEMBRANE MODULE UNIT AND MEMBRANE BIOREACTOR DEVICE

摘要

An immersion type membrane module unit comprises: immersion type membrane modules (2) for membrane bioreactor filtration; extending walls (27) which extend from the lower ends of the membrane modules and surround spaces under the membrane modules (2); and air diffusion devices (8) for membrane aeration which are arranged in lower portions within the spaces or in the vicinity of the points under the spaces and have a plurality of air diffusion holes arrayed planarly. Bubbles from the air diffusion holes are guided by the extending walls (27) to the voids among the membrane modules (2).