The FFE secondary filter is an improved EW secondary filter. The EW secondary filter core can not be fixed to rotate, and the cleaning effect is poor, and the mesh is easily blocked. On the other hand, the rotation of the FFE secondary filter core is not fixed, and the cleaning process relies on the scraper of the sewage chamber to remove the plastic film and weeds in the water with relatively strong adhesion. Under the action of pressure difference between the internal and external pressure of the sewage chamber pipe, the sewage is discharged. This type of secondary filter has stronger cleaning capacity than the stationary type.

Shape and size table of FFE secondary filter net