| 摘要 |
PROBLEM TO BE SOLVED: To provide a spiral type membrane element where water treatment efficiency is hardly reduced even when water treatment is performed under high pressure conditions or the treatment of high temperature water is performed for a long time.SOLUTION: In a spiral type membrane element comprising: an element body where a separation membrane, a supply side flow passage material and a permeation side flow passage material are wound around a perforated center tube; an upstream side end member disposed at the upstream side of the element body; and a downstream side end member disposed at the downstream side of the element body, the upstream side end surface of the element body and the rib of the upstream side end member are joined.SELECTED DRAWING: Figure 1 |
