Why do plate-and-frame filter presses require relatively little floor space?

The plate-and-frame filter press is highly efficient in terms of spatial requirements because it provides the most filtering area per unit of floor space compared to other filter types.1

This design achieves a high surface-area-to-footprint ratio by stacking multiple plates and hollow frames—which hold the caked solid matter—within a compact, supported assembly. Because the filtering surfaces are layered vertically and compressed together, the system maximizes the available area for filtration without requiring an expansive horizontal layout. While this configuration is space-efficient and cost-effective in terms of capital investment, it is a batch-operated process that typically requires manual labor for loading and unloading the filter cake.21