DIP TYPE MEMBRANE SEPARATION APPARATUS

PROBLEM TO BE SOLVED: To provide a dip type membrane separation apparatus which can be made small-sized to be loaded and unloaded through a manhole of a combination septic tank and facilitating the assembly and the disassembly. SOLUTION: The dip type membrane separation apparatus is constituted so that a wall part 31 formed on the side edge part of each platelike membrane cartridge 22 is brought into contact with the side edge part of the adjacent platelike membrane cartridge 22, a side surface cover 39 is arranged to cover the outermost side platelike membrane cartridge 22 and the wall part 31 formed on the side edge part of the side surface cover 39 is brought into contact with the side edge part of the opposed platelike membrane cartridge 22, and an upper part cover 24 forming an upward and downward opened frame body engaged with the upper part of a membrane cartridge unit 23 to be mounted to bundle the upper side part of each platelike membrane cartridge 22 and the side surface cover 39, an upward and downward opened air diffusion box 25 engaged with the lower part of the membrane cartridge unit 23 to be mounted to bundle the lower side part of each flat plate like membrane cartridge 23 and the side surface cover 39 and an air diffusion apparatus 26 arranged in the air diffusion box 25 are provide.