As the core component of reverse osmosis equipment, reverse osmosis membrane elements efficiently intercept dissolved salts, heavy metals, bacteria, and other impurities in water with nano - level filtration accuracy. With excellent performance and long - life advantages, they become the key guarantee for high - quality pure water production in various industries.
Reverse osmosis membrane is an artificial semipermeable membrane with certain characteristics made by simulating biological semipermeable membrane,and it is the core component of reverse osmosis technology.The principle of reverse osmosis technology is that with the action of higher than the osmotic pressure of the solution,these substances and water are separated according to the fact that other substances cannot pass through the semi-permeable membrane.
Raw Water Pretreatment: The raw water first passes through pretreatment systems such as quartz sand and activated carbon to remove large - sized impurities, residual chlorine, and organic matter, reducing turbidity and providing suitable inlet conditions for the membrane elements.
High - pressure Osmosis: The pretreated water is pressurized to 1.0 - 1.5MPa by a high - pressure pump and flows into the membrane element from the inlet end under pressure. Water molecules pass through the membrane pores to form produced water, while dissolved salts, colloids, bacteria, viruses, and other impurities are retained on the membrane surface.
Separation of Produced Water and Concentrated Water: The pure water that passes through the membrane is collected inside the membrane element as produced water and is output from the produced water end; the concentrated water that does not pass through carries impurities and is discharged from the concentrated water end.
Automatic Flushing Maintenance: The equipment regularly initiates a flushing program, using produced water to flush the membrane surface in the reverse direction to remove attached pollutants and maintain the high desalination rate and flux of the membrane elements.
| Key Advantages | Description |
|---|
| Ultra - precise Filtration Performance | Membrane pore size is only 0.0001μm, with a dissolved solids (TDS) interception rate ≥99% and a heavy metal ion removal rate >98%. |
| High Water Flux Design | The water production capacity of a single 4040 - type membrane element reaches 0.8 - 1.2m³/d, meeting the efficient water production requirements of different - scale equipment. |
| Anti - pollution Technology | Adopts anti - pollution composite membrane materials with a smooth surface and strong chemical stability, reducing the risk of organic matter and microbial adhesion. |
| Long Lifespan and Low Attenuation | Under normal conditions, the service life exceeds 3 years, and the annual desalination rate attenuation is <1%, ensuring long - term stable operation. |
| Standardized Adaptability | Follows industry standard specifications such as 8040 and 4040, and is compatible with mainstream reverse osmosis equipment, facilitating installation and replacement. |
| Industry | Application Scenarios | Core Value |
|---|
| Electronics & Semiconductor | Ultra - pure water production for chip etching and wafer cleaning | Removes nano - level impurities, ensures the precision of electronic processes, and improves chip yield. |
| Pharmaceutical Manufacturing | Production of injection water and pharmaceutical purified water | Effectively removes pyrogens, endotoxins, and heavy metals, meeting GMP standards and ensuring drug safety. |
| Food and Beverage | Purification of water for bottled water and dairy product production | Enhances product taste and quality stability, extends shelf life, and reduces the risk of equipment scaling. |
| Seawater Desalination | Freshwater supply for islands and ships | Converts high - salinity seawater into potable freshwater, solving water shortage problems. |
How to determine if the reverse osmosis membrane element needs to be replaced?
When the water production capacity decreases by 30%, the desalination rate drops below 90%, or the operating pressure continues to rise and cannot be restored by flushing, it is recommended to replace the membrane element.
Can membrane elements filter viruses?
Yes. The pore size of reverse osmosis membranes is much smaller than the size of viruses (virus diameter >0.02μm), and the virus removal rate can reach over 99.99%.
How to maintain membrane elements during long - term shutdown?
Fill the membrane housing with protective liquid (sterilized pure water containing bactericides), close the inlet and outlet valves, and replace the protective liquid every 30 days to prevent microbial growth.
Reverse osmosis membrane elements serve as the core technical support for pure water production in various industries, thanks to their nano - level separation accuracy, efficient and stable performance, and wide applicability. Whether in the electronics and pharmaceutical fields with strict water quality requirements or in seawater desalination scenarios addressing water shortages, stable and reliable water purification can be achieved through reasonable selection and maintenance. In the future, with the development of new materials and intelligent technologies, reverse osmosis membrane elements will continue to optimize filtration efficiency and anti - pollution capabilities, providing better water treatment solutions for more sectors.
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1.Reverse Osmosis Equipment
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