When the solid particles in the suspension are large and the particle size is uniform, the pores of the filter residue layer are relatively smooth, and the velocity of the filtrate passing through the filter residue layer is large. The application of agglomerating agents to gather fine particles into larger agglomerates is beneficial to increase the filtration speed.
For the suspension of solid particles with a fast sedimentation speed, apply the filter on the upper part of the filter medium to make the filtration direction consistent with the direction of gravity. The coarse particles first settle, which can reduce the clogging of the filter medium and the filter residue layer. Such as colloid) mixed with thicker solid particles such as diatomaceous earth, expanded perlite, etc., can make the filter residue layer become loose; when the viscosity of the filtrate is large, the suspension can be heated to reduce the viscosity. These measures can speed up the filtration rate.