How are filter cakes removed from leaf filters?

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In leaf filters, which are used for batch-operated pressure filtration, the filter cake is removed by using a water spray or by applying air pressure to the filtrate line.1

Unlike some other types of filters that require the manual removal of the leaf assembly, leaf filters are designed to allow for efficient cake discharge without needing to remove the leaves from the vessel. Once sufficient cake has been deposited on the leaves, the pressure is removed and the vessel is opened to facilitate this cleaning process.1