| 摘要 |
<p>PROBLEM TO BE SOLVED: To stabilize separation removal performance when a separation film element is operated for a long period with high pressure.SOLUTION: Provided is the separation film element comprising: a catchment pipe; a separation film body; and plural projections fastened to a surface on a permeation side of the separation film. The respective projection has 2% or more of elasticity. The projections are arranged so as to be continuous to a longitudinal direction of the separation film, and in a range of 3% or more and 20% or less to the whole length of the separation film, adhesive force of the projections is less than 1 N/m.</p> |
