Spiral wound membrane module and method of manufacture and use.

摘要

A high flux membrane module comprises two membrane leaves (12) (see Fig. 1) wrapped about a central permeate flow tube to define a flow path for permeate in the membrane leaves (12). The membrane leaves (12) contain two or more separate permeate flow compartments (26, 28) within each membrane leaf to provide for the separate permeate flow of the permeate within the compartments (26, 28) to the permeate outlet. This reduces the area (30, 32) of the permeate back pressure compared with as seen at (22) in the prior art of Fig. 1, thus reducing membrane wrinkling and membrane failure particularly during membrane cleaning cycles.