Pressure Leaf Filter

Pressure leaf filters are batch filters using a round or rectangular wire frame (leaf) dressed with sewn filter cloths. The individual leaves are mounted on a manifold which is inside a vessel. Slurries or solutions to be filtered are pumped into the vessel and each leaf and filter cloth separate the solids from the liquids. The filter has to be cleaned using a sluice bar or hoses and the solids are dropped out. Generally the solids loading is light and the filter is used as a polishing or clean up filter, sometimes with a filter aid such as diatomaceous earth.

Because the cake discharge system is relatively ineffective, a good surface on the filtration side is critical. These filters require a fine balance of flow and efficiency to achieve reasonable life and to minimize the time required to achieve the desired turbidity of the solution. Most commonly used filter media are monofilaments with filter aid or felts without filter aid.

Your BWF sales engineer can help you develop a media to improve the performance of your pressure leaf filter. Or contact us on the internet.