And How They Work DryVac filter presses are among the most efficient dewatering devices and they continue to be used when the highest cake solids are required.
Conditioned sludge is pumped into a series of fixed-volume chambers.
Each chamber is lined with a filter cloth to retain the solids. During the filling phase, free water is released and passes through the cloth. As the chamber fills with solids, pressure builds and the consolidation phase begins. During consolidation, terminal pressure is reached and filtrate flow rate declines. The plates are supported on a structural frame with a shifting mechanism to separate or accordion the plates one at a time.