What are the precautions for the use of chemical reverse osmosis pure water equipment at high temperatures?
What are the precautions for the use of chemical reverse osmosis pure water equipment at high temperatures? Author: Chemical reverse osmosis water equipment should be run at room temperature, because in high temperature environment, the performance of the reverse osmosis membrane will be a great negative impact. When the water temperature rises, the salt rejection rate of the reverse osmosis membrane will decrease, which is inversely proportional. The reason is that in the fixed flow operation state, the increase of water temperature will reduce the viscosity and cause the increase of the water flow, which directly leads to the decrease of the operating pressure and ultimately the decrease of the salt rejection rate. Therefore, when the water temperature rises, we should take corresponding measures to adjust and maintain it according to the actual situation. In addition, the impact of high temperature is by no means limited to the drop in desalination rate. The increase in water temperature will enable some microorganisms to obtain a good growth and reproduction environment, and the equipment will be contaminated by microorganisms. Most bacteria are suitable for growth in water temperature of 15°C to 30°C. When the temperature rises, their metabolism and growth rate will increase. And when microorganisms enter the concentrated water section of the reverse osmosis system, the nutrients inside are the nutrients for its growth and reproduction. It can reproduce rapidly and form biofilms on the surface of the reverse osmosis membrane within a few days, which increases the entry and exit of the reverse osmosis system. The water pressure difference will not only reduce the desalination rate, but also reduce the water production, and the water produced will also be polluted. Precautions for the use of chemical reverse osmosis pure water equipment: 1. The filter element and ultrapure water equipment need to be cleaned or replaced on a regular basis. Because no matter what kind of material is used, the filter element will absorb a lot of impurities after a period of work, and it is easy to become a breeding ground for bacteria. In the life cycle of the ultrapure water machine filter element, the standard of regular replacement should be strictly implemented, and the subsequent maintenance service of the filter element should be standardized. The filter element is regularly replaced, cleaned and maintained to ensure the water quality of the ultrapure water machine. 2. Avoid direct sunlight. Regardless of any water treatment equipment, avoid direct sunlight during use. The ultrapure water equipment must be properly protected. If it must be placed on a balcony or a place where it may be exposed to direct sunlight, it is recommended to build a shade cover or baffle near the ultrapure water equipment. 3. Avoid close to high temperature or working in an environment where the temperature is too high. The temperature around the ultrapure water machine is too high, which will affect its service life. If the temperature is too high, the microorganisms in the water will multiply faster, which is not conducive to the use and storage of the ultrapure water machine. The normal working temperature of the RO membrane of the ultrapure water machine is below 45 degrees, too high will affect the normal operation of the RO membrane. 4. When the chemical reverse osmosis pure water equipment is found to be contaminated by microorganisms, measures should be taken immediately to clean the equipment. Environmental protection and environmental protection recommend using 0.1% NaOH solution for chemical cleaning. The cleaning environment is that the water temperature is lower than 30 degrees Celsius and the pH value is 11-12.
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