REVERSE OSMOSIS MEMBRANE FILTER DEVICE

摘要

An object of the present invention is to provide a reverse osmosis membrane filtering device capable of reducing variation in the amount of permeate water in the axial direction of water collecting pipes regardless of the number or length of the water collecting pipes. The reverse osmosis membrane filtering device includes: a water-collecting member including at least one water collecting pipe, and having a plurality of sections each of which has a plurality of water collecting apertures; at least one filter assembly disposed around the plurality of sections, the at least one filter assembly including a filter member including a reverse osmosis membrane; at least one insertion tube disposed inside the water-collecting member and defining a plurality of permeate-water channels corresponding to the plurality of sections inside the water-collecting member in cooperation with at least one seal member; and a pressure adjusting device configured to increase a pressure of at least one of the plurality of permeate-water channels to a pressure higher than that of another one of the plurality of permeate-water channels.