Preventive Maintenance & Membrane Cleaning Guide for Commercial RO Plants

Maximizing Commercial RO Plant Efficiency

Commercial RO plants installed in schools, colleges, hospitals, corporate offices, and restaurants handle heavy daily water production. Without systematic preventive maintenance, bio-fouling, silica scaling, and iron precipitation rapidly ruin expensive membranes.

Critical Daily & Weekly Maintenance Checklist

1. **Daily Logbook Parameters**: Record inlet pressure, vessel pressure drop ($Delta P$), permeate flow, concentrate flow, and product water TDS.
2. **Pre-filter Pressure Drop**: Replace 5-micron cartridge filters whenever $Delta P$ exceeds 0.8 bar ($kg/cm^2$).
3. **Anti-Scalant Dosing Calibration**: Check chemical tank levels daily and calibrate stroke pump frequency to prevent calcium sulfate precipitation.

When to Perform CIP (Clean-In-Place) Chemical Wash

A CIP membrane wash is required when: - Permeate flow rate decreases by 10 – 15%. - Normalized salt passage increases by 10 – 15%. - Trans-membrane pressure drop increases by 15%.

• **Low-pH Acidic Wash (Citric Acid / HCl solution)**: Removes calcium carbonate, iron oxidation, and mineral scale.
• **High-pH Alkaline Wash (Na-EDTA / NaOH solution)**: Cleans organic slime, silt, bio-fouling, and colloidal silica.

Schedule a comprehensive commercial RO plant inspection with Yuvanthika Aquacare & Solar Care Systems in Karur today!