How to filter out black spots in ion-exchange membrane caustic soda
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There are extremely small particle-like black impurities in ion-exchange membrane caustic soda; may I ask what kind of equipment can be used to filter them out?
Let’s analyze it to see if a magnetic filter can be added
Black spot component: rubber, rubber that has corroded and fallen off from the battery cell gaskets.
We have been using filter bags made of PE material with a 1-micron specification for several years, consistently in 50% alkali systems.
Bag filters can be used; they have a large filtration capacity and a long cleaning cycle
It can be filtered using bag filters or metal sintered tubes; one filter element should be sufficient, with a mesh size of 200 to 300 being appropriate. Metal filters can be reused.
Which manufacturers produce metal sintered filter elements? Could you recommend some? Thank you!
We use magnetic filters, but their effectiveness isn’t very good
For denitration using membrane technology, a precision filter is usually required before the membrane is used; bag-type filters are an option – they work well and are easy to clean.