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Why can the manual loading and unloading of a filter press increase labour costs?

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The manual loading and unloading of a filter press increases labour costs because it is a batch-operated process that requires significant human intervention.1

Unlike continuous filtration systems, a plate-and-frame filter press must be physically opened to separate the plates and manually cleared of the accumulated filter cake once the filtration cycle is complete. This requirement for manual handling becomes particularly labour-intensive and costly as the size of the filter press increases.1