HOLLOW FIBER MEMBRANE MODULE, HOLLOW FIBER MEMBRANE MODULE UNIT, AND WATER TREATMENT METHOD

摘要

A hollow fiber membrane module enabling the efficient contact of microorganism on the surface of a membrane with a gas and having excellent durability, a hollow fiber membrane module unit using the hollow fiber membrane module, and a water treatment method using the module and the module unit. The hollow fiber membrane module is formed in such a manner that the end parts of sheet-like hollow fiber membranes are fixed with fixing members, the end faces of the fixing members on the hollow fiber membrane exposed sides are formed in a generally rectangular shape, and the end faces thereof on the hollow fiber membrane-free side is formed in a generally circular shape. The hollow fiber membrane module unit is formed in such a manner that the plurality of modules are disposed. The water treatment method is used to purify a treated water by the microorganism adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.