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ProMinent GmbH Products
Membrane Technology and Membrane Filtration - Nanofiltration
With nanofiltration, ions dissolved in water are held back to a lesser degree than with reverse osmosis. Typical salt retention rates are between approximately 80 - 85 %. Multivalent ions (e.g. Ca and Mg) are retained better than univalent ions (e.g. Na, K). Nanofiltration systems are often a good alternative to reverse osmosis systems because there is no need for time-consuming regular regeneration with large amounts of salts.