Regeneration Guidelines

Regeneration Guidelines for SS 316L Elements

1. Remove the filter element from the housing after depressuring it and remove gaskets/'O' rings from the element. The element should be thoroughly washed to remove excess fluid and acidity/alkalinity.
2. In case the residue on the element is slimy/oily, the elements need solvent treatment. This could be achieved by using a suitablr solvent like IPA, EDC, MDC etc. depending on the nature of th cake. Necessary precaution should be taken to avoid any fire/health hazard during this stage.
3. The degreased element should then be dipped in hot alkaline solution containing 15% NaOH and 5% Na₂CO₃at almost 100°C for 1 - 2 hours.
4. Remove the element and rinse with water to remove alkalinity.
5. This element should then be dipped in dilute HNO₃ (15% conc.) at 85°C for 30 minutes.
6. This element should later be rinsed with clean water washed with filtered water which has been filtered to a level finer than the micron rating of the filter element.
7. Element should then be dried in an oven at about 105°C.
8. The element is now ready for installation and should be fitted by putting new gaskets/'O' rings.

You are requested to ensure that proper safety precautions are followed while handling of both elements as well as alkalies/acids during regeneration.