There are three main types of faults in single-stage reverse osmosis equipment:

1. Reduced permeability of reverse osmosis equipment

2. The salt penetration rate of reverse osmosis equipment increases (desalination rate decreases)

3. Increased pressure drop in reverse osmosis equipment

There are many reasons that cause these malfunctions in reverse osmosis equipment. Identifying the root cause of these malfunctions is essential to implement maintenance and repair measures as soon as possible.

The common problems in single-stage reverse osmosis equipment are a decrease in desalination rate and a decrease in product water volume. If either or both of them slowly decrease, it may be a common phenomenon of dirt or scale production, which can be solved through appropriate cleaning; A sudden or rapid performance decline indicates that the processing system has encountered problems or improper operations. A problem has occurred and needs to be resolved as soon as possible. Delays may cause the reverse osmosis membrane to be unable to restore its original performance.

The prerequisite for discovering problems in a timely manner is to keep corresponding records. When it is found that the desalination rate and water production of the system have decreased, the instrument should be calibrated first to avoid misjudgment due to instrument reasons. These instruments include conductivity meters, flow meters, pressure meters, temperature meters, etc. Secondly, it is necessary to standardize the recorded operational data. Changes in temperature, influent TDS, recovery rate, service life, and water flux can all cause changes in desalination rate and water production. By calculating the standardized water production and desalination rate, and comparing them with the initial operating data, confirm whether the system has any faults.

The above is the cause of the malfunction of single-stage reverse osmosis equipment that we have introduced to you. During long-term operation, reverse osmosis equipment will gradually accumulate various pollutants on the membrane surface, such as colloids, microorganisms, inorganic scale, metal oxides, etc. These substances deposited on the membrane surface can cause a decrease in the performance of the reverse osmosis device. In order to restore the performance of the membrane, it is necessary to chemically clean and disinfect the membrane.

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