SW30XHR-400i: 8-Inch High Desalination RO Membrane

1. Product Introduction

SW30XHR-400i  is a high-end composite reverse osmosis membrane specially developed for high-standard water treatment scenarios, with "ultra-high desalination rate, 8-inch large diameter and stable operation" as its core positioning. It adopts advanced interface polymerization technology and high-quality modified aromatic polyamide composite material, combined with optimized spiral wound structure design, which effectively makes up for the defects of low desalination rate and low water production efficiency of traditional RO membranes. The 8-inch diameter design is more suitable for large-scale water treatment systems, while the ultra-high desalination rate ensures that the produced water meets the strictest water quality standards. After long-term practical verification, it can maintain stable performance in complex water quality environments, and is a core component for high-standard water treatment projects in various industries.

2. Application Scenarios

SW30XHR-400i is widely used in high-demand water treatment scenarios due to its ultra-high desalination rate and 8-inch large-diameter advantage. In seawater desalination projects, it is applied to large-scale coastal desalination plants to efficiently convert seawater into drinking water and industrial water. In brackish water treatment, it is used in arid and semi-arid areas to treat underground brackish water, solving the problem of insufficient fresh water resources. In industrial production, it is the core component for ultra-pure water preparation in electronics, pharmaceuticals and semiconductor industries, ensuring the purity of production water. In municipal water supply, it is used to upgrade water treatment systems to improve the quality of tap water. In addition, it is also suitable for high-standard water purification scenarios such as laboratory water and medical water, showing strong applicability.

3. Technical Parameters

The technical parameters of SW30XHR-400i are optimized for ultra-high desalination and large-diameter characteristics: membrane diameter is 8 inches, effective membrane area is 400ft² (37.16m²); membrane material is modified aromatic polyamide composite membrane; membrane structure is spiral wound; operating pressure ranges from 5.0MPa to 8.0MPa; operating temperature is 5℃ to 45℃; pH adaptation range is 2.0 to 11.0, cleaning pH can reach 1.0 to 12.0; ultra-high desalination rate is ≥99.85%, boron rejection rate is ≥93.0%; membrane flux is 50-70 L/(m²·h) under standard conditions; service life is 4-5 years under normal maintenance; maximum inlet SDI15 is 5.0, maximum inlet turbidity is 1.0NTU; maximum inlet chlorine concentration is 0.1mg/L, ensuring stable operation in complex water quality environments.

4. Product Advantages

The core advantages of SW30XHR-400i are concentrated in ultra-high desalination rate and 8-inch large-diameter design, supplemented by stable performance and strong anti-fouling ability. First, ultra-high desalination rate of ≥99.85% can effectively intercept almost all salt ions and harmful impurities in water, ensuring the produced water meets high-standard requirements. Second, 8-inch large-diameter design increases the effective membrane area, improves water production efficiency by 30% compared with 4-inch membranes, and is more suitable for large-scale water treatment systems. Third, the optimized membrane surface modification technology enhances anti-fouling ability, reduces the adsorption of colloids and microorganisms, and reduces chemical cleaning frequency to once every 6-8 months. In addition, it has excellent chemical stability and mechanical strength, can withstand high-pressure operation, and maintains stable flux and desalination performance for a long time, with high economic benefits.

5. Application Procedures

The application procedure of SW30XHR-400i is standardized and easy to operate, which can be divided into six steps. First, conduct strict pretreatment of raw water, including filtration, sedimentation, disinfection and anti-scaling treatment, to remove large particles, colloids and microorganisms, avoiding membrane fouling and damage. Second, install the 8-inch membrane module correctly according to the system design, ensure tight pipeline connection and no leakage, and pay attention to protecting the membrane surface during installation. Third, start the water treatment system, adjust operating pressure, temperature and recovery rate to the standard range, and conduct 2-3 hours of trial operation to check system stability and water quality. Fourth, regularly monitor desalination rate, membrane flux, differential pressure and other indicators during formal operation, and record operation data. Fifth, conduct chemical cleaning in time when the membrane flux decreases by more than 20% to restore membrane performance. Finally, shut down the system regularly for maintenance, check the membrane module for damage, and replace aging parts if necessary.

6. Quality Standards

The production and detection of SW30XHR-400i strictly follow ISO 20466:2024 and national RO membrane standards, ensuring product quality and reliability. High-quality modified aromatic polyamide materials are selected, which are non-toxic, corrosion-resistant and meet environmental protection standards. Production is carried out in a 100-level clean workshop, and each link from material mixing, membrane casting, curing to cutting and packaging is strictly controlled and inspected. Finished products undergo strict tests including desalination rate, flux, anti-fouling performance and chemical stability. Each membrane is vacuum-sealed with protective liquid (≤1.0% sodium bisulfite) and tested qualified before leaving the factory, ensuring consistent performance of each product.

7. Working Principle

The working principle of SW30XHR-400i is based on reverse osmosis technology, optimized for ultra-high desalination performance. Under the action of high pressure higher than the osmotic pressure of the solution, the semi-permeable membrane selectively allows water molecules to pass through, while intercepting salt ions, heavy metals, colloids and other impurities that cannot pass through the membrane pores. Its ultra-small pore size (0.0001-0.001 microns) and modified surface charge repel charged impurities through electrostatic action, further improving the desalination effect. The 8-inch large-diameter design increases the contact area between the membrane and raw water, improves water production efficiency, and the whole process is chemical-free, energy-saving and environmentally friendly, which is an efficient high-standard water purification technology.

8. Future Prospects

With the continuous improvement of global water quality requirements and the expansion of large-scale water treatment projects, the demand for high-performance RO membranes such as SW30XHR-400i is growing. In the future, SW30XHR-400i will be further optimized: membrane modification technology will be upgraded to further improve desalination rate and anti-fouling ability; the 8-inch large-diameter design will be more compatible with intelligent water treatment systems, realizing real-time monitoring of membrane operation status and automatic maintenance. At the same time, it will be developed in the direction of low energy consumption, further reducing the operation cost of water treatment systems, and expanding application scenarios in more high-standard water treatment fields, making greater contributions to global water resource utilization.

9. Conclusion

SW30XHR-400i (8-Inch Diameter, Ultra-High Desalination Rate) stands out in the RO membrane field with its core advantages of ultra-high desalination rate and 8-inch large-diameter design, effectively solving the pain points of low desalination rate and low water production efficiency of traditional RO membranes. It has standardized application procedures, strict quality control and wide application scenarios, which can meet the high-standard water treatment needs of various industries. Its performance has been fully verified in practical projects, and it is recognized as a reliable high-end RO membrane product. With the continuous progress of technology, SW30XHR-400i will have broader development prospects, providing strong support for high-standard water treatment and water resource sustainable development.

10. Frequently Asked Questions (FAQs)