How to clean a clogged RO reverse osmosis membrane
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Our company has a reclaimed water recycling system, and the reverse osmosis membranes can no longer be used after operating for at most 48 hours, even under a pressure of up to 15 MPa. Methods such as alkaline cleaning and acid cleaning yield unsatisfactory results; the membranes get clogged again after operating for only a short time. Could someone who specializes in pure water or reclaimed water treatment please advise which method is most effective for cleaning?
What is the quality of the filter elements inside the security filter?
Did the decrease in water production occur suddenly, or gradually? It can’t be due to an accidental operation or physical contamination, right? As long as the membrane is not physically damaged, it can generally be restored to a good condition through chemical cleaning using specialized membrane cleaners. Feel free to add me on QQ: 284798253 for further communication. Please indicate that you are from Haichuan Online Forum. Thank you!
Remove the membrane module and subject it to large-scale ultrasonic cleaning; this can be tried.
If this problem occurs after only 48 hours of operation, you should give serious consideration to the quality of the water fed into the RO system; otherwise, the results after cleaning might be the same as this time, or even worse.
If the blockage occurs gradually, the quality of the raw water is a major factor; otherwise, there is a problem with the pre-treatment filtration equipment upstream. Cleaning also depends on whether it is scaling or other substances; the membrane supplier may need to remove and clean it, or cleaning agents for membranes can be purchased. Proper maintenance of the membrane is essential.
OP, why don’t you explain how the membrane system is doing now? How was it handled?
It’s not very complicated; you can just hire a professional cleaning company
It first depends on the properties of your raw water and what needs to be removed. Then, focusing on these membrane choices. Cleaning is also more targeted. Only in this way can the problem be solved fundamentally.
It first depends on the properties of your raw water and what needs to be removed. Then, focusing on these membrane choices. Cleaning is also more targeted. Only in this way can the problem be solved fundamentally.
Each type of water quality is different, which is why the film-washing method is tailored to specific conditions. In the past, after cleaning, the water production and pressure were normal, but after several hours of operation the pressure increased and the water output decreased. It happens over and over again; over time, the performance of the membrane gradually declines. It’s so annoying!