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LCLE-4040 RO membrane

Mastering Reverse Osmosis Maintenance: In-Depth Guide for Membrane Element Cleaning

In the realm of reverse osmosis (RO) systems, maintaining optimal membrane cleanliness is paramount for sustained performance. Our detailed guide unveils the general steps for cleaning RO membrane elements, ensuring your system operates at its best.

1. Pumping Clean, Chlorine-Free Water:

Begin by using a pump to transfer clean, chlorine-free RO product water from the designated cleaning tank (or a corresponding water source) into the pressure vessel. Allow the water to drain for a few minutes, setting the stage for a thorough cleaning process.

2. Preparation in a Controlled Environment:

In a clean box, prepare a solution using the clean product water. This step ensures that the cleaning liquid is free from contaminants, setting the foundation for an effective membrane cleaning process.

3. Circulating Cleaning Fluid:

Initiate the cleaning process by circulating the cleaning fluid within the pressure vessel. The duration of circulation can be preset, with an optimal time of 1 hour. Tailor the flow rates based on the pressure vessel size: 35-40 gallons/minute for 8-inch or 8.5-inch vessels, 15-20 gallons/minute for 6-inch vessels, and 9-10 gallons/minute for 4-inch vessels.

4. Post-Cleaning Maintenance:

Upon completing the cleaning cycle, drain and rinse the cleaning tank. Prepare for the next flush by filling the tank with clean product water. This meticulous post-cleaning routine ensures the system is ready for subsequent operation.

5. Final Flush and System Operation:

Utilize the pump once again to transfer clean, chlorine-free product water from the cleaning tank into the pressure vessel. Drain for a few minutes to complete the flushing process. Subsequently, run the RO system with the product water discharge valve open until the water is clean, devoid of foam or any cleaning agents. Typically, this phase lasts between 15 to 30 minutes.


By following these detailed steps, you’ll master the art of reverse osmosis membrane cleaning, contributing to enhanced system efficiency and prolonged membrane life.

Xi’an CHIWATEC Water Treatment Technology provide the RO membrane to clients both inland and oversea with more than 10years experience. We manufacture our own brand Daltonen RO membrane and we are also the official distributor of Dupont, Toray, CSM, Nitto, LG and Vontron RO membrane. Whatever product you need, we cold meet your requirement.

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