Reverse osmosis equipment is an increasingly common water treatment equipment that is widely used. It mainly uses reverse osmosis membrane separation technology to remove most of the salt, bacteria, and viruses in the raw water, thereby ensuring water quality. Equipment failures are inevitable during use. Today, we will talk about common failures of reverse osmosis equipment

In order to meet the needs of users, achieve standard water quality, minimize pollution at all levels, extend the service life of the equipment, and reduce the maintenance workload of operators, reverse osmosis equipment takes water that meets national tap water standards as the source water in process design, and is equipped with pre-treatment systems such as medium filters, activated carbon filters, sodium ion softeners, precision filters, RO reverse osmosis host systems, ion exchange mixed bed (EDI electric desalination system) systems, etc.

There are three main types of faults in reverse osmosis equipment: reduced permeability, increased salt permeability (decreased desalination rate), and increased pressure drop. There are many reasons for these three faults, and it is necessary to identify the essence of the problem from these fault phenomena as much as possible, so as to implement maintenance and repair measures as soon as possible The common problems in reverse osmosis equipment are the decrease in desalination rate and the 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 decrease in performance indicates a problem with the processing system or improper operation. If a problem occurs, it 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 timely problem detection is to keep corresponding records. When a decrease in system desalination rate and water production is found, 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, the recorded operating data should be checked; Standardization Changes in temperature, influent TDS, recovery rate, service life, and water flux can all cause changes in desalination rate and water production. Standardized water production and desalination rate are calculated and compared with initial operating data to confirm that the system has * In the long-term operation of the reverse osmosis device, various pollutants such as colloids, microorganisms, inorganic scale, metal oxides, etc. will gradually accumulate on the membrane surface. The deposition of these substances on the membrane surface can cause a decline in the performance of the reverse osmosis device. In order to restore the performance of the membrane, chemical cleaning and disinfection of the membrane are necessary.

Generally, the decrease in desalination rate and the decrease in product water volume. If either or both of them slowly decrease, it may be caused by dirt or scale, and the problem can be solved through appropriate cleaning. If the performance drops suddenly or quickly, it is likely due to problems with the treatment system or improper operation. When problems occur, the following points should be achieved:

1. First, calibrate the instrument to avoid misjudgment due to instrument reasons, including conductivity meters, flow meters, pressure meters, temperature meters, etc

2. To perform" on the recorded operational data; Standardization Changes in temperature, influent TDS, recovery rate, service life, and water flux can all cause changes in desalination rate and water production. Standardized water production and desalination rate are calculated and compared with initial operating data to confirm that the system has *

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 will deposit on the membrane surface, causing a decline in the performance of the reverse osmosis device. Therefore, chemical cleaning and disinfection of the membrane are necessary

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