What problems should be paid attention to when using large-scale industrial ultrapure water treatmen

What problems should be paid attention to when using large-scale industrial ultrapure water treatment equipment?

by:Ocpuritech     2021-06-10
What problems should be paid attention to when using large-scale industrial ultrapure water treatment equipment? Author: large industrial ultrapure water treatment equipment with the most advanced technology to produce ultra-pure water, the water industry to meet all the requirements of high water. Large-scale industrial ultrapure water treatment equipment is also becoming more and more widely used in the water treatment industry. Therefore, various problems in the operation of large-scale industrial ultrapure water treatment equipment have also attracted people’s attention. So what problems should be paid attention to when operating large-scale industrial ultrapure water treatment equipment? Temperature and reverse osmosis process, the temperature of the material and liquid The progress of the operation will be improved. Within a certain range, the increase in temperature will cause the viscosity of the material to decrease, which is conducive to the increase in the water production of reverse osmosis. Generally, when the temperature ÿ increases by 1℃, the water permeability of the membrane increases by about 2.7%. The water permeability of the membrane marked on the commercial membrane is generally the data value of the water temperature between 24 and 25 ℃, and the actual water permeability under the working condition temperature needs to be estimated by the correction coefficient. It should be noted that the operating temperature should not exceed the heat-resistant temperature of the film, otherwise the service life of the film will be affected. Operating pressure. During the reverse osmosis process, maintaining and increasing the operating pressure is beneficial to increase the water permeability, and because the membrane is compacted, the salt permeability will decrease. However, when the operating pressure exceeds a certain limit, the membrane's water permeability will decline and the membrane will age due to serious membrane compaction and deformation. Therefore, the appropriate operating pressure should be selected according to the actual treatment liquid and the pressure resistance of the selected reverse osmosis membrane. The cleaning effect of membrane modules Membrane fouling is a phenomenon that must occur during reverse osmosis operation that affects the normal operation of the system. Even if the feed liquid is pretreated before operation, the membrane fouling cannot be completely eliminated. After membrane fouling occurs, it will cause a decrease in water production and salt removal rate, and will have a great impact on the life of the membrane, and even cause a treatment system. Operation is paralyzed. Therefore, the membrane module needs to be cleaned regularly according to the actual situation. 1. The water inlet pipe needs to be flushed with filtered water before it can be connected to the edi module of the industrial ultrapure water equipment, otherwise the pipeline debris will enter the module due to the failure to clean, causing irreparable losses. 2. Slowly pressurize the module for one to two minutes to avoid damage caused by water hammer. Remember: Do not let the pressure of the module exceed the specified range. 3. Confirm that the flow of all kinds of water is sufficient, such as fresh water flow, concentrated water circulation flow of concentrated water discharge flow meter, etc. And to maintain the safe and normal operation of the linkage device. 4. Check the inlet water quality of the module, such as residual chlorine or other oxidants. The quality of the influent water must meet the influent index. 5. If the water inlet hardness is greater than 0.5ppm, or if other water inlet indicators fail to meet the requirements, the module will be damaged. At this time, it is necessary to take regular acid cleaning or thick water pipeline softening. 6. If the edi ultrapure water equipment has a salt pump system, then the composition and quality of the salt must be carefully checked and strictly required. The salt index can be referred to User manual. Long-term use of salt that does not meet the standard will cause damage to the membrane. 7. Please treat plastic pipe fittings and connections with care. This is the end of the introduction about what issues should be paid attention to when operating large-scale industrial ultra-pure water treatment equipment. Only by ensuring the stable operation of large-scale industrial ultra-pure water treatment equipment can the quality of water produced by large-scale industrial ultra-pure water treatment equipment be further guaranteed. Quality of products.
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