Reverse Osmosis And Nanofiltration -

Fouling, or the accumulation of contaminants on the membrane surface, is the "Achilles' heel" of these systems, requiring robust pre-treatment (e.g., UF, chlorination, pH adjustment).

Uses dense, high-pressure membranes to reject almost all dissolved salts (monovalent/divalent), organic compounds, and microorganisms (>99% rejection). It is the standard for seawater/brackish water desalination. Reverse Osmosis and Nanofiltration

An intermediate process between Ultrafiltration (UF) and RO, often called "membrane softening". It operates at lower pressures, allowing some monovalent ions (e.g., sodium, chloride) to pass while effectively removing multivalent ions (e.g., calcium, magnesium) and larger organic molecules. Key Performance Factors Fouling, or the accumulation of contaminants on the

Modern membranes utilize thin-film composite (TFC) structures, with emerging materials like graphene oxide (GO), carbon nanotubes (CNTs), and biomimetic materials showing promise for higher permeability and chemical resistance. Primary Applications An intermediate process between Ultrafiltration (UF) and RO,