A Novel Cleaning Chemistry for Efficient Removal of Intractable Biofouling

Severe silica scaling challenges in reverse osmosis systems are examined, with solutions presented through improved antiscalant selection and optimized clean-in-place (CIP) procedures. Dissolved silica concentrations exceeding 200 ppm in concentrate streams are identified as a threshold beyond which conventional antiscalants lose effectiveness, leading to scale deposits that reduce membrane permeability and salt rejection. Two case studies document the use of enhanced chemical and operational strategies to manage high-concentration brine silica, including antiscalant evaluation protocols and CIP formulation development.