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Use pressure UF trend data to plan cleaning
Record permeability, temperature, cycles and recovery to plan UF cleaning on a consistent basis.
HOSON WATER editorial ·
Establish a baseline before judging a trend
Record clean-system flow, feed temperature, transmembrane pressure and the filtration cycle configuration at commissioning. Keep readings at a consistent point in the cycle where possible. Changes in temperature and production setpoint can alter pressure independently of fouling. Use the supplier’s normalization method where it applies and document conditions that fall outside it.
Use recovery to narrow the investigation
Trend conditions immediately before and after routine backwash and approved chemical cleaning. A gradual rise that recovers after backwash points to a different operating response from a decline that persists after cleaning. Review inlet quality, air entrainment, valve positions and instrument health before adjusting cleaning frequency. Follow the module’s specified cleaning limits and waste-handling plan.
Agree when to call for support
Document escalation thresholds for loss of output, unusual pressure, suspected membrane damage or unacceptable filtrate. Send the support team a time history with the operating sequence and recent changes. This gives the engineer evidence to recommend further inspection or testing.