The spiral-wound membrane nanofiltration systems designed and supplied by Uberplants Italia represent an advanced technological solution for the selective treatment of water in both domestic and industrial applications. Nanofiltration technology lies between reverse osmosis and ultrafiltration, offering an optimal balance between permeate quality, energy efficiency and separation capacity. Spiral-wound membranes consist of filter sheets wound around a central support, ensuring a compact, high-performance design with a very large active surface area.

These systems operate at lower pressures than reverse osmosis, but are capable of removing low-molecular-weight organic compounds, divalent salts (such as calcium, magnesium and sulphates), pesticides, pharmaceutical residues, PFAS and heavy metals. At the same time, they allow some monovalent salts to pass through, a characteristic that makes them ideal for applications where complete demineralisation is not required, but rather the selective removal of pollutants.

Nanofiltration is widely used in the treatment of well water or surface water to make it safe for drinking, in the removal of micropollutants from wastewater and industrial effluent, and in water recovery and reuse processes, where it is important to improve water quality without completely removing the salinity. It is also used in the food and pharmaceutical industries for the fractionation of solutions and the concentration of products.