Concentrated water side separation net of spiral-wound membrane element and spiral-wound membrane element

The utility model discloses a concentrated water side separation net of a spiral-wound membrane element and the spiral-wound membrane element. The concentrated water side separation net of the spiral-wound membrane element comprises a net face, the net face is composed of first silk threads arranged at intervals in the first direction and second silk threads arranged at intervals in the second direction, and the axes of the first silk threads and the second silk threads are coplanar when the net face is flatly laid; the convex blocks are arranged on the surface of the net surface at intervals; and the separation net and the membrane are overlapped to form a gap which is positioned between the net surface and the membrane and is supported by the convex blocks. Due to the fact that the concentrated water side partition net is provided with the protruding blocks, the contact area of silk threads and a membrane is greatly reduced when the spiral-wound membrane element with the concentrated water side partition ne