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Casa - Notícias - Proper Usage Guide for RO Reverse Osmosis Membranes: Purify Water & Extend Equipment Lifespan

Proper Usage Guide for RO Reverse Osmosis Membranes: Purify Water & Extend Equipment Lifespan

June 8, 2026
In water treatment systems, the RO reverse osmosis membrane serves as the core filtration component. It effectively removes dissolved salts, bacteria, heavy metals and other contaminants from water to guarantee safe drinking water.
However, improper use may lead to membrane fouling or damage, compromising water quality and shortening equipment service life. Today, we’ll share practical guidelines for RO membrane operation in plain language — professional yet easy to follow.

1. Correct Installation: Lay a Solid Foundation

Importance

Faulty installation may cause leakage or uneven pressure on the membrane, reducing its service life.

Operation Tips

  • Ensure tight sealing of membrane housings and firm pipe connections. Inspect O-rings before use.
  • Follow the official equipment manual strictly; do not modify the device on your own.

Professional Tip

RO membranes filter water via pressure difference. Keep the inlet water pressure within the standard range (generally 50-70 psi). Excessively high pressure will damage the membrane.

2. Regular Flushing: Prevent Fouling

Importance

Contaminants in water will accumulate on the membrane surface, causing clogging and lowering filtration efficiency.

Operation Tips

  • Flush the system for 1 to 2 minutes before or after each use to wash away residual substances.
  • Perform manual flushing of membrane assemblies once a week: shut down the equipment and open the flush valve.

Professional Tip

Regular flushing maintains membrane permeability and prolongs its lifespan. Increase flushing frequency if the raw water has high hardness or poor quality.

3. Routine Maintenance: Timely Cleaning & Replacement

Importance

Membranes will gradually age and get contaminated. Neglected maintenance will result in deteriorated water quality.

Operation Tips

  • Replace pre-filters (e.g., PP cotton filters) every 3 to 6 months to protect the RO membrane from large particle impurities.
  • Replace the RO membrane every 1 to 2 years (adjust the cycle according to local water quality and service hours).
  • Soak membrane assemblies with dedicated cleaning agents every six months to remove stubborn dirt.

Professional Tip

Monitor the TDS (Total Dissolved Solids) value of product water. A rise of over 10% indicates maintenance is required.

4. Operational Notes: Avoid Common Mistakes

Importance

Improper operations such as excessive pressure or high temperature can directly damage the membrane.

Operation Tips

  • Do not let inlet water temperature exceed 45°C, as high temperature will deform the membrane.
  • If the system is out of service for more than one week, perform thorough flushing before restarting.
  • Ensure the raw water source is clean to prevent sediment and chemicals from entering the system.

Professional Tip

RO membranes operate based on the osmotic pressure principle. A stable operating environment helps maintain optimal working efficiency.