Spirally-wound membrane-type separator module capable of reversing the direction of liquid flow

摘要

A spirally-wound membrane-type separator module capable of reversing the direction of liquid flow comprises an outer cylindrical pressure vessel, a spirally-wound membrane element disposed within said outer vessel and extending in the axial direction thereof, and a plurality of brine seals disposed in the annular space defined between the outer periphery of said membrane element and the inner periphery of said outer vessel, each brine seal including a ring-like portion fitted on the outer periphery of said element and a cup-shaped flange portion sealingly engaging the inner periphery of said outer vessel, said brine seals being arranged close to one another in the direction of axis of the element with the flange portions of the brine seals being directed in opposite directions.