FILTER SCREEN

Provided is a filter screen having a plurality of slots, each slot having a longest principal axis A1 that has a length L, and each slot having a second axis A2 that is perpendicular to A1 and that has a length W, wherein the distance between adjacent slots in the direction of the axes A2 is XP; wherein XP is greater than W; wherein the distance between adjacent slots in the direction of the axesA1 is YP; either wherein L is 800 micrometers or less and XP is 350 micrometers or less, or wherein L is 1600 [mu]m or less and XP is 180 [mu]m or less. Also provided is a method of filtering feed water using such a filter screen. 提供一种过滤网，所述过滤网具有多个狭槽，每个狭槽具有长度为L的最长主轴线A1，并且每个狭槽具有垂直于A1并且长度为W的第二轴线A2，其中相邻狭槽之间在所述轴线A2的方向上的距离为XP；其中XP大于W；其中相邻狭槽之间在所述轴线A1的方向上的距离为YP；或者其中L为800微米或更小，并且XP为350微米或更小，或者其中L为1600μm或更小，并且XP为180μm或更小。还提供一种使用这种过滤网来过滤给水的方法。