MEMBRANE CARTRIDGE

摘要

A filtration membrane (37), and a channel groove pattern (38) through which liquid permeated the filtration membrane (37) flows are provided on the filtration plate surface of a filtration plate (36), and a nozzle (39) for collecting and taking out permeated liquid is provided at the upper end of the filtration plate (36), wherein the channel groove pattern (38) has a plurality of channel grooves (38a), a header groove (44) for averaging the suction pressure in the width direction (B) of the filtration surface is formed in the filtration plate (36), the region where the channel groove pattern (38) is formed is sectioned vertically into a plurality of water collection areas (46, 47) by means of a linear header groove (44) elongated in the width direction (B) of the filtration plate (36), the nozzle (39) and the header groove (44) are interconnected via the channel groove (38a) in the upper water collection area (46), and the cross-sectional area of channel of the header groove (44) is larger than the cross-sectional area of channel of the channel groove (38a).