SUEZ Water - Water Technologies & Water

Nanofiltration (NF) Membranes

Nanofiltration membrane specifically developed for seawater sulfate removal

The SUEZ family of nanofiltration (NF) membranes is optimized with flux and rejection ideal for a wide range of process separations, concentrations, and water treatment applications. Divalent and multivalent ions are preferentially rejected by the membrane, while monovalent passage is dependent on feed concentration and composition. The membranes are available in an assortment of robust constructions designed to perform in extreme conditions.

    Overview

    Explore SUEZ Nanofiltration (NF) Membranes 

    Dairy DK

    Dairy DK, or dairy processing, NF membrane elements are used in food-related processes requiring stringent sanitary procedures. Typical applications include deacidification and demineralization of whey or UF permeate and lactose desalting. 

     

     

    Dairy DL

    Dairy DL, or dairy processing, NF membrane elements are used in food-related processes requiring stringent sanitary procedures. Typical applications include deacidification and demineralization of whey or UF permeate and lactose desalting. 

     

    DK

    DK high rejection NF elements generally are used for dye removal/concentration, metals recovery, sodium chloride diafiltration, sulfate removal, and bio-chemical purification. 

     

    DL

     

    The DL series comprises industrial high flow NF membrane elements. Typical applications include dye removal/concentration, sodium chloride diafiltration, metals recovery, and bio-chemical purification.  

     

    Duracon

    The Duracon NF membrane elements are engineered for use in food-related processes requiring stringent sanitary procedures and customarily are used for processing sugar solutions in food-related processes. Typical applications for the Duracon NF1 series include demineralization, deacidification, and sugar concentration. Typical applications for the Duracon NF2 series include mono-saccharides purification

     

    HL Series

    The HL series of NF membrane elements have a molecular weight cutoff of 150-300. Typical applications are water softening, partial water softening in municipal and industrial markets, color removal, and reduction of THM formation potential. 

     

    MUNI NF Series

     

    The Muni NF provides a cost effective and low pressure nanofiltration alternative to standard reverse osmosis treatment. Typical application is municipal drinking water plants. Performance is characterized by hardness reduction, color removal, and organic pollutants reduction (such as the precursors to THM). 

     

    Seawater Sulfate Removal (SWSR) 

    The SWSR NF-series membrane features a 300 Dalton molecular weight cut-off and is an absolute barrier for any suspended matter including particles, colloidal silica, and bacterial matters. The SWSR membrane is recognized for its low fouling properties and is designed to produce consistently low sulfate water for injection. 

     

    Vinopro

    Vinopro nanofiltration membrane elements are characterized by an approximate molecular weight cutoff of 150-300 Dalton for uncharged organic molecules. Typically used for grape sugars concentration, oak extract fractionation, alcohol and acidity reduction, and wine adjustment.  

     

    Applications

    Nanofiltration membranes are used in a variety of applications such as: 

    • Lactose/ Whey Demineralization 
    • Sugar Processing 
    • Maple Syrup Processing 
    • Wine Processing & Alcohol Adjustment 
    • Bio-Chemical Purification  
    • Sulfate Removal from Seawater and other Process and Waste Streams 
    • Municipal Pretreatment 
    • Water Softening 
    • Metals Recovery 
    • Dye Removal and Concentration 
    • Demineralization and Concentration of Organic Solutions