2026-08-19
Reverse osmosis membranes fail gradually, not suddenly, and the cause is almost always fouling rather than a defective element. This guide classifies the four fouling families – inorganic scaling, colloidal/silt, biofouling and organic/metal-oxide – explains the operating symptoms that warn you early (rising feed pressure, falling flux, climbing differential pressure), and details a correct cleaning-in-place (CIP) procedure with low- and high-pH steps, temperatures and soak times. We cover prevention through antiscalants, SDI control, recovery-rate limits and upstream UF pretreatment, plus the delivery lifecycle: factory testing of membrane elements, shipment inspection of pressure vessels, installation preparation of the CIP skid, and commissioning against customer recovery targets. A FAQ addresses how often to clean, when to replace, and how to tell scaling from biofouling.
Lithium battery wastewater/sewage
