Nanofiltration membranes are designed to remove divalent ions, which cause water hardness (Calcium and Magnesium). Therefore, they are also referred to as softening membranes.
Typically, NF membrane have higher permeability than brackish-water membranes and comparable rejection of bivalent ions (i.e., Ca, Mg, Mn, Fe, SO4), large organic molecules and of pathogens (bacteria, protozoa, and viruses).
However, Nanofiltration membranes have a lower rejection of monovalent ions (Sodium, Chloride, Boron etc) compared with brackish-water membranes or seawater membranes. Their looser membrane technology reduces the capacity to reject most monovalent salts but are capable of delivering a higher filtered water, hence nanofiltration systems operate at lower feed pressure than reverse osmosys sistems.
REVERSE OSMOSIS DESALINATION
IRON AND MANGANESE FILTERS
Here to help with our commercial and industrial water treatment solutions
Please fill up the following form and we will get back within the next 48 hours.