The Perforated-Belt Screen has a very high separation efficiency. It is mainly used as a fine screen for large and medium-sized municipal and industrial wastewater treatment plants. Perforated plates offer superior separation performance compared to bar screens, especially for fine screening. They are also able to retain large quantities of gravel, sand and grit. In addition, the screen elements prevent particularly long fibers from passing through the screen and thus achieve maximum separation efficiency.
The wastewater flows through the perforated stainless-steel plates and the contaminants are filtered out. The rotation of the endless perforated plate belt in the channel slowly separates the screenings from the water flow. Rake bars, which are arranged at intervals across the entire screen width and have an appropriately selected installation angle, prevent the retained screenings from rolling. The rake bars ensure that even larger items such as bottles are removed from the channel.
At the upper deflection point, the perforated plates are continuously cleaned by a fast, counter-rotating brush, which significantly improves the cleaning performance. Cleaning is additionally supported by an integrated spray bar.
