The Disc Filter consists of several discs, each made up from sectors which are clamped together to form the disc. The sectors are ribbed towards the neck and designed for a high capacity drainage rate. One of the main features is that the required floor space taken up by disc filters is minimal and the cost per m2 of filtration area very low compared to other vacuum filters.
During operation, each sector is submerged in the slurry and a cake is formed on the face of the discs. The disc then emerges to the drying zone, the liquid drains to a central barrel and to the vacuum receiver. Once the sector leaves the drying zone a snap or low pressure air blow is applied to discharge the cake.
Scraper blades on the side of each disc guide the cake to discharge chutes which are positioned between adjacent discs and are wide enough to avoid their clogging by the falling cake. A paddle type agitator located at the bottom of the tank maintains the slurry in suspension.