How to reduce high differential pressure across a FilmTec BW30 / SW30 RO membrane train
A rising normalized differential pressure across the RO train means feed channel fouling. Perform a low-pH citric acid CIP to dissolve inorganic or biological deposits. If that does not work, plan for element replacement.
~180 min6 steps
How to diagnose low permeate flow and recovery decline on a FilmTec BW30 / SW30 RO system
Normalized permeate flow declining 10% or more below baseline means membrane scaling or biofouling. Review antiscalant dosing, check SDI, and plan a high-pH CIP to recover flux.
~150 min6 steps
How to investigate salt rejection decline and high permeate conductivity on a FilmTec BW30 / SW30 RO system
Rising permeate conductivity means a membrane element has been physically damaged, oxidized, or has a sealing defect. Sample each pressure vessel's permeate individually to locate the problem vessel.
~120 min6 steps