How does the reverse osmosis membrane of the ultrapure water treatment equipment for small and mediu

How does the reverse osmosis membrane of the ultrapure water treatment equipment for small and medium-sized industries increase the use time?

by:Ocpuritech     2021-06-18
How does the reverse osmosis membrane of the ultrapure water treatment equipment for small and medium-sized industries increase the use time? Author: With industrial development, the industry standard for water has been improved, small and medium industrial ultrapure water treatment equipment is equipment in order to meet the industrial production of pure water and water required for manufacture. Small and medium-sized industrial ultrapure water treatment equipment needs to be maintained during long-term use, so as to ensure the stable operation of small and medium-sized industrial ultrapure water treatment equipment. Why does the life of reverse osmosis membrane of small and medium-sized industrial ultrapure water treatment equipment shorten? Everyone knows that reverse osmosis membrane is a very important component in small and medium-sized industrial ultrapure water treatment equipment. Any problem with reverse osmosis membrane will affect the overall equipment. The operation has an impact, and many errors in the operation will also cause harm to the reverse osmosis membrane, which will shorten the life of the reverse osmosis membrane of the ultrapure water treatment equipment in small and medium-sized industries. So are it all caused by the wrong operation? 1. The method of shutting down the ultrapure water treatment equipment in small and medium-sized industries is incorrect. A. The rapid pressure drop when shutting down is not thoroughly flushed. Because the concentration of inorganic salts on the concentrated water side of the membrane is higher than that of the raw water, it is easy to scale and pollute the membrane. B. Wash with pretreatment water with chemical reagents. Water containing chemical reagents may cause membrane fouling during equipment shutdown. 2. Inadequate monitoring of residual chlorine in ultra-pure water treatment equipment in small and medium-sized industries 1. If the dosing pump fails or the chemical solution fails, or the membrane is damaged by residual chlorine when the activated carbon is saturated. 2. Damage to membrane performance caused by improper cleaning and incorrect cleaning methods. 3. Improper operation of ultrapure water treatment equipment in small and medium-sized industries causes membrane damage. In the ultrapure water treatment equipment in small and medium-sized industries, residual gas runs under high pressure, and the formation of air hammer will damage the reverse osmosis membrane. There are usually two situations: A. After the equipment is emptied, when the equipment is re-run, the gas is not exhausted and the pressure is increased quickly. The remaining air should be exhausted at a pressure of 2 to 4 bar, and then the pressure should be gradually increased. B. When the joint between the pretreatment equipment and the high pressure pump is not well sealed or leaks (especially the microfilter and its subsequent pipeline leaks) when the pretreatment water supply is insufficient, if the microfiltration is blocked, the sealing is not good. In good places, some air will be sucked in due to the vacuum. 4. Inadequate maintenance of ultrapure water treatment equipment for small and medium-sized industries leads to micro-pollution. This is a common problem in the use of composite polyamide membranes. Because polyamide membranes have poor resistance to residual chlorine, they have not correctly added chlorine and other disinfectants during use. In addition, users do not pay enough attention to the prevention of microorganisms, which can easily lead to microbial contamination. This is the end of the introduction about why the life of reverse osmosis membranes of small and medium-sized industrial ultrapure water treatment equipment will be shortened. When using the equipment, pay more attention to the above issues, so as not to affect the life of reverse osmosis membranes.
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