How to identify the quality of membranes in purified water equipment? It can be divided into "three steps"
Release time：2024-09-26click：0
Purified water equipment is mainly used in the production and cleaning of various ultrapure materials, reagents, laboratories, biological experiments, electronic products, etc. In recent years, with the advancement of environmental protection concepts, more and more industries, including the pharmaceutical industry, have attached great importance to water quality. The application of purified water equipment has gradually broadened, and the requirements for the filtration effect of purified water equipment have become more stringent.
According to the working principle of purified water equipment, in simple terms, the source water is turned into pure water. The source water enters the various levels of purification systems of the pure water machine equipment to filter out water impurities. , organic matter, inorganic matter, symbolic gases and other insoluble matter, the source water enters the membrane of the pure water equipment after passing through the filter elements at all levels. The reverse osmosis membrane can remove various residues remaining in the water, and only allows water molecules to enter through the membrane pores. Stage treatment, through ion exchange technology, allows the ions in the water to pass through the action of positive and negative electrodes to meet the ionized water standards that people need.
In purified water equipment, the reverse osmosis membrane is the core component, which can effectively remove impurities such as colloids, microorganisms, and dissolved salts in the water.
It is worth mentioning that as a special separation membrane material, reverse osmosis membrane has the advantages of low investment cost, low energy consumption, high separation efficiency, advanced technology, and wide application. It was initially used in It was used in the aerospace industry and was later gradually extended to civilian and industrial applications. Currently, reverse osmosis membranes have been widely used in medicine, food, beverages, seawater desalination and other fields.
It is understood that the quality of the reverse osmosis membrane in purified water equipment will affect the filtration effect, so the selection of the membrane is very critical. So, how should users identify the quality of membranes in purified water equipment? What issues should you pay attention to when purchasing a reverse osmosis membrane? Some technical personnel from purified water equipment manufacturers suggested that it can be divided into "three steps".
Take a look. When looking at the film, users should check whether it is complete and fresh. "Due to some external factors, the purified water reverse osmosis membrane may be incomplete." The technician said.
Second smell. It is understood that if affected by production and external factors, the membrane may deteriorate, and some may emit a strange smell. If stored improperly for a long time, the purified water reverse osmosis membrane may also have adverse effects. Therefore, users can further identify the quality and badness of the film by smelling it.
Three tests. Inspection is also one of the most effective ways to identify purified water reverse osmosis membranes. It is reported that the water that comes out of a good-quality reverse osmosis membrane has no impurities, no salt, and no minerals.
"Prepare a reverse osmosis membrane with high salt rejection rate and water flux. The higher the membrane, the bettergood. The higher the desalination rate means the ultra-thin desalination layer on the membrane surface is denser. "Technicians said that users can focus on testing the desalination rate and water flux.
In addition, reverse osmosis is a membrane separation technology driven by pressure, so it has certain requirements on flexibility and mechanical strength. For higher requirements, good reverse osmosis membranes generally have strong heat resistance and pressure resistance, and users can check this.
If it is used in special environments, Users also need to test the membrane's resistance to physical, chemical, and microbial erosion, and observe whether it has good oxidation resistance and hydrolysis resistance.
Generally speaking, users are choosing reverse osmosis. You need to exercise more judgment when applying the film, and consider all aspects. Generally speaking, if you choose well-made materials and have exquisite workmanship, the quality will be better and the service life will be longer
(Original title: How to. How to identify the quality of membranes in purified water equipment?
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