SEITZ SUPRADISC II:
RATES FOR CIDER, MEAD AND OTHER CHALLENGING-TO-FILTER BEVERAGES
When it comes to filtering cider, mead and other colloidally challenging beverages like beer, we always revert back to the standard 40cm x 40cm filter sheet comparison. We recommend 1.5 to 2, 40cm x 40cm of our filter sheets to filter one barrel or 33 gallons of these types of beverages.
Your throughput for a standard wine will be significantly higher but will depend on a myriad of variables.
Therefore, you will be able to filter the following volumes before you reach the 17psi differential pressure limit for the first time. At that point it is time to perform your regeneration procedure to get the most throughput from your modules.
After filtering these volumes and performing a regeneration, you should be able to get about 65% of your first volume through before doing a subsequent regeneration and so on until a regeneration doesn’t bring the differential pressure down.
The guidelines for filtration speed, when choosing the size of your lenticular housing is as follows:
If you are getting higher or lower speeds than these, try to use a tighter or coarser grade media or skip a grade when you step down your filtrations from coarse to tight.
When your batches of challenging-to-filter products are larger than what you can filter in one go, before having to perform a regeneration, it may be time to size up with a bigger housing, or use multiple housings to handle those volumes. At some point it also becomes more cost effective to consider alternative filtration methods, for example crossflow or pressure leaf filtration for larger volumes, depending on the colloidal status of your beverage.