Spiral membrane element and mechanical device for recovering members thereof

Abstract

A spiral membrane element includes: a plurality of membrane leaves each having a permeation-side spacer interposed between separation membranes facing each other and having both-side sealing parts and a peripheral-side sealing part that seal both-side ends and a peripheral-side end in an axial direction; a supply-side spacer interposed between the membrane leaves; and a perforated central pipe around which the membrane leaves and the supply-side spacers are wound. The permeation-side spacer in the membrane leaves has a tear processing part over the entire width on a peripheral side from the center.

Dependencies are inferred from the claim text.