Step screens (or stair screens) are comparatively a newer technology. Debris is lifted up the screen by means of fixed and movable plates. The movement of the plate provides a self-cleaning feature for this particular screen. An additional benefit of the step screen is its capability to form a filter mat as the trapped solids build up. This filter mat will enhance the solids removal rate of the screen.
Screening plays a vital role in the municipal or industrial wastewater treatment process. Proper screening protects wastewater treatment equipment and improves operations. When selecting a new screen, be aware of the particle sizes you need to remove. It should also be noted that newer screens have been developed, which combine coarse and fine screening into one piece of equipment, which may be a better solution for your screening application.