Pressurized or gravimetric filtration provides a gentle particle separation that is important, for example, in applications where the particles are easily broken.
The disc filter differs from the drum filter primarily through the way the filter surface is built. The slice filter creates sections with filter surfaces with each associated flushing system. When the water levels get large, this limits the length and the diameter of the drum structure due to the weight of the shaft. Additionally, a disc filter will provide greater filter area on the same exterior flat targets. In aquaculture, drum filters and disc filters have been a preferred solution especially for wastewater treatment and as component in RAS plants. This because particles in this type of water are small and larger particles easily painted. In a RAS plant it is also important to remove the smaller particles. Sterner has been working with drum filters for many years and chose in 2013 to start a collaboration with NP Innovation AB in Malmo. NP was established by Nils-Åke Person, a nestor in the development of this technology. NP's filtering is characterized by several improvements in terms of design, design and efficiency. Disc filter is also supplied for applications in drinking water, municipal wastewater, industrial and heating and cooling circuits