A drum filter is a device that uses a rotating drum covered by a cloth or ss mesh to separate liquid and solid particles. It works on the principle of vacuum filtration, where the liquid passes through the filter cloth and the solid cake remains on the surface. The cake can be washed, dried and removed by a scraper blade. A drum filter is suitable for filtering slurries with high solid content and can be used in various industries such as pharmaceuticals, chemicals and food processing¹²³.