What happens to the reverse osmosis membrane of small and medium RO pure water treatment equipment t

What happens to the reverse osmosis membrane of small and medium RO pure water treatment equipment that needs to be cleaned?

by:Ocpuritech     2021-06-27
What happens to the reverse osmosis membrane of small and medium RO pure water treatment equipment that needs to be cleaned? Author: pure water has come of age, more and more industrial or small and medium enterprises choose to use RO water treatment equipment, increased use of RO water treatment equipment for small and medium users, many users use, because they do not Correct use or inadequate maintenance of small and medium RO pure water treatment equipment, etc., cause failure of the small and medium RO pure water treatment equipment. The reverse osmosis membrane of small and medium RO pure water treatment equipment needs to be cleaned after some conditions occur to restore its performance. The following environmental protection editor will introduce what happens to the reverse osmosis membrane of small and medium RO pure water treatment equipment that needs to be cleaned. 1. Cleaning of reverse osmosis membrane components of small and medium-sized RO pure water treatment equipment: When the following conditions occur in the system operation, chemical cleaning operations should be carried out: (1) The water output of the device is reduced by 5~ compared with the initial operation (after the last cleaning) 10%. (2) The desalination rate of the device is reduced by 5-10% compared to the initial operation (or after the last cleaning). (3) When the pressure difference of each section of the device is increased by 1 time compared with the initial operation (or after the last cleaning). (4) If the device is out of service for a long time and protected by formaldehyde, before the system restarts. When one of the above four conditions occurs, the reverse osmosis membrane should be cleaned. There are two cleaning methods, namely low-pressure water flushing (0.3Mpa) or chemical cleaning. Generally, try to clean with low-pressure water, and use chemical cleaning when good cleaning effect cannot be obtained. When cleaning with chemicals, it is recommended to use acidic cleaning fluid for inorganic fouling pollutants; for microorganisms or organic pollutants, it is recommended to use alkaline cleaning fluid. The cleaning frequency is directly related to the water quality of the system: when SDI15<3, the cleaning frequency is about once every quarter; when SDI15 is about 5, the cleaning frequency may double, reaching every one to two months once. 2. Shutdown and maintenance of reverse osmosis membrane modules: The reverse osmosis system of small and medium-sized RO pure water treatment equipment should be flushed before being deactivated. If possible, the product water of the reverse osmosis system should be used for flushing, and conditions are not allowed. In the case of circumstance, water can be used for delayed self-closing flushing. After flushing the reverse osmosis system, if the outage period is less than 1 month, it needs to run for 0.5-1 hour a day; if it is not used continuously for more than 1 month, it needs 1% formalin prepared by the product water of the reverse osmosis system Soak the reverse osmosis membrane with the solution, and replace the protection solution every six months. Before replacing the protection solution, drain the old solution, rinse and run the system for 3-4 hours. This is the end of the introduction about what happens to the reverse osmosis membrane of the small and medium RO pure water treatment equipment that needs to be cleaned. I hope it will be helpful to everyone. In order to ensure the normal operation of the reverse osmosis membrane, it is necessary to regularly treat the small and medium RO pure water treatment equipment. The reverse osmosis membrane is cleaned. Before cleaning, determine the contamination of the reverse osmosis membrane and choose the correct method to clean it.
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