Water treatment equipment uses reverse osmosis to obtain water, which is widely used in various membrane water treatment processes. Simple machinery and equipment can be directly called reverse osmosis devices, while complex machinery and equipment are called reverse osmosis systems. When using reverse osmosis equipment, scaling is inevitable, which not only cannot be eliminated but also affects the water treatment effect. What is the cause of scaling temperature in water treatment equipment? How can we deal with it?

When the source water is treated with RO reverse osmosis membrane, insoluble salts will remain in the membrane layer, producing solid deposits for precipitation. When the reverse osmosis machine equipment is running, the working pressure formed by low voltage flushing will also generate water, and the concentration of water on both sides will naturally increase, causing the salt concentration value to increase. The salt contains more precipitable substances, which will flash through the scaling climate over time. Therefore, only insoluble salts that cannot exceed the saturation limit can better avoid the formation of scaling. Among various factors, in design, it is highly likely that in order to better replace the concentrated water barrier, efforts will be made to ensure a low salinity of the concentrated water.

But the key insoluble salts that appear in pure natural water resources include: calcium bicarbonate, barium sulfate, calcium bicarbonate, calcium fluoride, strontium sulfate, and so on. When designing the RO control system, special attention should be paid to barium sulfate and strontium sulfate. An increase in the concentration of calcium bicarbonate and a decrease in the temperature of water can also lead to a decrease in the solubility of strontium sulfate.

In addition, in some pure natural water quality, due to human factors such as the addition of drugs, the solubility product constant of some carbonates is relatively low, such as phosphate ions, iron and aluminum, which can be integrated into the water. The solubility product constant of these carbonates is relatively low, which is very easy to cause scaling. Therefore, when adding chemicals to equipment (such as coagulants, coagulants, scale and corrosion inhibitors, acid and alkali, etc.), the harm of positive ion components introduced by human factors is considered.

Sometimes, there may even be a phenomenon where the different chemicals added interact with each other, leading to the precipitation of insoluble substances and staining of membrane components. When encountering this situation, when adding a variety of drugs, attention should be paid to the composition of these drugs. If necessary, the compatibility mode can be determined through experiments. In order to better maintain the reverse osmosis device and increase its service life, preparatory treatment will be carried out on the source water. After filtering with activated carbon or quartz sand, coarse particle residues can be filtered out, and then the ion exchange column can be replaced to soften and remove calcium and magnesium low-temperature plasma from the water, which can prevent scaling and temperature rise.

To avoid scaling at high temperatures, the filtration rate of purified water equipment should ensure that it is not too fast or too slow. There should be a certain amount of time and flow rate in the softener process. Only when the conclusion of the softener is good can the operation of the filter be excellent; In the operation of water flow, it is necessary to ensure that the water flow is uniform. Only when the water flow is uniform can the conclusion be considered excellent; During the operation of filter materials, attention should be paid to the particle size and uniformity of the filter materials. Overall, a reasonable arrangement of membrane treatment technology can further efficiently avoid the occurrence of scaling in water purification equipment.

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