WATER PURIFIER MEMBRANE MODULE

To provide a water purifier membrane module that can suppress loads of water flow acting on a tip of a membrane bundle in a hollow-fiber membrane module and has high water permeability.SOLUTION: A water purifier membrane module 1 comprises a filtering material charging part 3, a dispersing part 5 and a hollow-fiber membrane part 7 arranged in this order, from an upstream side to a downstream side. The filtering material charging part 3 comprises a filtering layer 31 at an outer periphery side and a passing-water path 33 at an inner periphery side. The dispersing part 5 comprises a connection plate 51 that connects the filtering material charging part 3 to the hollow-fiber membrane part 7 and has a connection port 53, and a top plate 55 that blocks flow of water exhausted from the connection port 53. A ratio (X/Y) of a radius (X) of the top plate 55 to a radius (Y) of the connection port 53 is 1.5-5.0 and a gap (Z) between the connection plate 53 and the top plate 55 is 0.5-2.0 mm. The hollow-fiber membrane part 7 stores a hollow-fiber membrane 73 formed of a number of hollow fibers and is configured to receive water passing through the dispersing part 5 and exhaust water passing through the hollow-fiber membrane 73.SELECTED DRAWING: Figure 1 【課題】中空糸膜モジュールにおける膜束の先端にかかる水流の負荷が抑制され、かつ、透水性能が高い浄水器膜モジュールの提供。【解決手段】上流側から下流側へ濾材充填部３、分散部５および中空糸膜部７を有する浄水器膜モジュール１であって、濾材充填部３は外周側の濾材層３１と内周側の通水路３３とを備え、分散部５は濾材充填部３と中空糸膜部７とを接続し、接続口５３を有する接続板５１と、接続口５３から排出された水の流れを遮る天板５５とを備え、天板５５の径（Ｘ）と接続口５３の径（Ｙ）との比（Ｘ／Ｙ）が１．５～５．０であり、接続板５３と天板５５との隙間（Ｚ）が０．５～２．０ｍｍであり、中空糸膜部７は、多数の中空糸からなる中空糸膜７３が収容されており、分散部５を通過した水を受け入れ、中空糸膜７３を通過した水を排出するように構成されている、浄水器膜モジュール。【選択図】図１