SPIRAL WOUND REVERSE OSMOSIS MEMBRANE ELEMENT, MEMBRANE WOUND METHOD THEREOF AND REVERSE OSMOSIS WATER PURIFIER

摘要

A spiral wound reverse osmosis membrane element, membrane wound method of the spiral wound reverse osmosis membrane element, and a reverse osmosis water purifier, wherein the spiral reverse osmosis membrane element comprises a plurality sets of reverse osmosis membranes (100) and a central tube assembly (200) including a pure water tube (210) and a plurality of waste water pipes (220) spaced apart from each other, the plurality of waste water tubes (220) being arranged around the pure water tube (210); wherein each set of the reverse osmosis membranes (100) has a first part located inside the central tube assembly (200) and a second part located outside the central tube assembly (200), each of the waste water tube (220) and the pure water tube (210) is separated by the first part of a set of the reverse osmosis membranes (100); and the second part of the plurality sets of reverse osmosis membranes (100) forms a multi-layer membrane assembly surrounding the center assembly (200).