SW30ULE-400i: High-Efficiency Low-Energy RO Membrane

1. Product Introduction

2. Application Scenarios

The SW30ULE-400i is widely used in various water treatment scenarios, and its application form is flexibly adjusted according to water quality requirements, water volume and energy-saving goals.

 First, municipal water purification. In urban water supply systems, the SW30ULE-400i can be used to treat surface water and groundwater, remove harmful impurities, improve water quality, and its low energy consumption advantage can reduce the energy cost of municipal water supply, which is suitable for large-scale urban water purification projects. 

Second, industrial pure water preparation. In electronics, pharmaceutical, food and beverage industries that require high-purity water, the SW30ULE-400i can stably produce pure water that meets industrial standards, with low energy consumption to reduce the production cost of enterprises. 

Third, groundwater treatment. In areas with high groundwater salinity or excessive heavy metal content, the SW30ULE-400i can effectively remove salt ions and heavy metals, provide safe drinking water for residents, and avoid secondary pollution. 

Fourth, boiler feed water treatment. In power plants and chemical enterprises, the SW30ULE-400i can treat boiler feed water, reduce water hardness and salt content, prevent boiler scaling, extend boiler service life, and reduce energy consumption caused by scaling. 

Fifth, reverse osmosis system upgrading. For existing RO water treatment systems with high energy consumption, the SW30ULE-400i can be directly replaced to achieve energy-saving upgrading without large-scale transformation of the system, saving transformation costs.

3. Technical Parameters

The technical parameters of theSW30ULE-400i directly determine its energy-saving effect, water production efficiency and adaptability, and the core technical parameters are as follows: 

First, operating pressure: the standard operating pressure is 1.5-2.5 MPa, which is 30-40% lower than that of conventional RO membranes, realizing ultra-low energy consumption operation. 

Second, water production flux: the standard flux is 28-32 LMH (liters per square meter per hour), which is 20-30% higher than that of conventional low-energy RO membranes, improving water production efficiency. 

Third, desalination rate: the standard desalination rate is ≥99.2%, which can reduce the TDS of raw water (500-5000mg/L) to below 50mg/L, meeting the standards of drinking water and industrial pure water. 

Fourth, membrane specifications: the SW30ULE-400i adopts 8040 standard specification, with a membrane area of 40-42 ㎡, suitable for medium and large-scale water treatment systems.

 Fifth, service life: under standard operation and maintenance conditions, the service life is 3-5 years, and the annual flux attenuation rate is ≤8%, ensuring long-term stable performance. 

Sixth, temperature adaptability: it can work stably in the temperature range of 5-45℃, adapting to the seasonal temperature change of raw water. 

Seventh, pH adaptability: it can operate normally in the pH range of 2-11, adapting to different raw water pH conditions.

4. Product Advantages

Compared with conventional RO membranes, the SW30ULE-400i has obvious core advantages, among which ultra-low energy consumption and high flux are the most prominent, and it also has comprehensive advantages in stability, anti-pollution and maintenance. 

First, ultra-low energy consumption. The standard operating pressure is only 1.5-2.5 MPa, which can reduce the energy consumption of the water treatment system by 30-40% compared with conventional RO membranes, greatly reducing the long-term operation cost. 

Second, high water production flux. The standard flux is 28-32 LMH, which can improve water production efficiency, reduce the number of membrane modules used, and save equipment investment cost. 

Third, stable performance. The modified polyamide composite material and optimized membrane structure design ensure that the desalination rate and flux remain stable under long-term operation, and the annual flux attenuation rate is ≤8%, avoiding frequent membrane replacement. 

Fourth, strong anti-pollution performance. The membrane surface is treated with anti-pollution coating, which can reduce the adsorption of colloids, organic matter and other impurities, extend the cleaning cycle to 4-6 months, reducing operation and maintenance workload. 

Fifth, wide adaptability. It can adapt to different raw water quality (low to medium salinity, different pH values) and temperature conditions, meeting the needs of various water treatment scenarios. 

Sixth, easy replacement and maintenance. It adopts standard 8040 specification, which can be directly replaced with conventional RO membrane modules, and the maintenance process is simple, reducing maintenance costs.

5. Application Procedures

The correct application of theSW30ULE-400i is the key to giving play to its core advantages and ensuring the stable operation of the water treatment system. Combining my practical experience in project operation and maintenance, the specific application procedures are as follows: First, raw water pretreatment. Filter the raw water through quartz sand, activated carbon and ultrafiltration membrane to remove suspended solids, colloids, microorganisms and organic matter, ensure the inlet water turbidity is below 0.2 NTU, and avoid membrane pollution. Second, membrane module installation. According to the water treatment scale, correctly install the SW30ULE-400i membrane module, ensure the connection tightness, and avoid water leakage and pressure loss. Third, system debugging. After installation, flush the system with low-pressure fresh water first, then slowly increase the pressure to the standard operating range (1.5-2.5 MPa), and adjust the flux to 28-32 LMH to ensure stable operation and energy-saving effect. Fourth, daily operation and monitoring. Real-time monitor the operating parameters of the membrane (operating pressure, flux, desalination rate), and adjust the parameters in time according to the slight changes of raw water quality. Fifth, regular cleaning. When the membrane flux decreases by 10-15% or the operating pressure increases by 15%, use a professional cleaning agent to clean the membrane to remove scaling and pollution and restore membrane performance. Sixth, membrane replacement. When the service life expires or the desalination rate drops below 98%, replace the membrane module in time to ensure the ultra-low energy consumption and high-efficiency water purification effect.

6. Quality Standards

The SW30ULE-400i must comply with strict international and domestic quality standards to ensure its ultra-low energy consumption, high flux and safety. Internationally, it follows the ISO 9001 quality management system and ASTM D4516 (standard test method for reverse osmosis membranes); domestically, it complies with GB/T 30307-2013 "Reverse Osmosis Membrane Elements for Water Treatment" and GB/T 5749-2022 "Sanitary Standards for Drinking Water". The core quality standards include: First, the standard operating pressure is 1.5-2.5 MPa, and the error shall not exceed ±3%; the energy consumption per ton of produced water shall not exceed 1.2 kWh. Second, the standard flux is 28-32 LMH, and the error shall not exceed ±5%; the annual flux attenuation rate shall not exceed 8%. Third, the standard desalination rate must be ≥99.2%, and the desalination rate shall not drop below 98% during service life. Fourth, it must have strong chemical stability and can resist the corrosion of acid, alkali and other chemical substances, without damage. Fifth, the anti-pollution performance must meet the standard, and the cleaning cycle shall not be less than 4 months. Sixth, the membrane material must be non-toxic and harmless, and the produced water shall not contain harmful substances such as heavy metals, meeting the drinking water standard. Seventh, the product must have a complete quality inspection report, and the production process is traceable.

7. Working Principle

The working principle of the SW30ULE-400i is based on reverse osmosis separation technology, and its dual advantages of ultra-low energy consumption and high flux are mainly achieved through advanced membrane material modification and structure optimization. Under the action of external operating pressure (1.5-2.5 MPa), raw water flows through the membrane surface. The modified polyamide composite material of the SW30ULE-400i forms a dense and uniform selective separation layer, which only allows water molecules to pass through quickly, while firmly intercepting salt ions, colloids, organic matter and heavy metal ions in the water. The intercepted impurities form concentrated brine and are discharged from the system, and the passed water molecules are collected and treated to become high-quality pure water. The key to its ultra-low energy consumption is the optimized membrane structure design, which reduces the resistance of water molecules passing through the membrane, so that high water production flux and high desalination efficiency can be achieved under lower operating pressure, thereby greatly reducing energy consumption. In addition, the membrane surface is treated with anti-pollution coating, which reduces the adsorption of impurities, ensures long-term stable operation, and maintains the ultra-low energy consumption and high flux advantages.

8. Future Prospects

With the increasing demand for energy conservation and environmental protection in the global water treatment industry and the continuous upgrading of water treatment technology, the SW30ULE-400i will have broader application prospects and development space. First, performance optimization. Continue to optimize membrane materials and structure, further reduce the operating pressure to 1.2-2.2 MPa, increase the flux to 32-35 LMH, and enhance the dual advantages of ultra-low energy consumption and high flux. Second, intelligent operation and maintenance. Integrate with the Internet of Things and sensor technology to real-time monitor the membrane's flux, operating pressure, desalination rate and other parameters, automatically adjust operating parameters, and realize intelligent early warning and maintenance. Third, application scenario expansion. Develop small-sized modified models based on the SW30ULE-400i, adapting to small-scale water treatment scenarios such as rural areas, small enterprises and outdoor emergency water supply, expanding the application scope. Fourth, cost reduction. With the improvement of production technology, the cost of membrane materials will be further reduced, promoting the popularization and application of the SW30ULE-400i in more water treatment projects. Fifth, green integration. Combine with renewable energy such as solar energy and wind energy, further reduce the carbon emission of the water treatment system, conforming to the global low-carbon development trend.

9. Conclusion

The SW30ULE-400i is a high-performance RO membrane with dual core advantages of ultra-low energy consumption and high flux, which plays an irreplaceable role in the modern water treatment field. It adopts advanced membrane material modification and structure optimization technology, breaking the bottleneck of high energy consumption in traditional RO membrane operation, and can achieve high water production flux (28-32 LMH) and high desalination rate (≥99.2%) under ultra-low operating pressure (1.5-2.5 MPa), with energy consumption per ton of water ≤1.2 kWh. The SW30ULE-400i is widely used in municipal water purification, industrial pure water preparation, groundwater treatment and other scenarios, providing energy-saving, stable and high-quality water support for industrial production, municipal life and emergency water supply. Its performance and quality are affected by technical parameters, application procedures and maintenance level, so it is necessary to formulate targeted application and maintenance schemes according to the actual water treatment scenario. With the continuous progress of membrane technology and the increasing demand for energy conservation and environmental protection, the SW30ULE-400i will be more efficient, energy-saving and intelligent, promoting the healthy development of the water treatment industry and making greater contributions to water resource utilization and energy conservation and emission reduction.

10. Frequently Asked Questions (FAQs)

Q1: What is the SW30ULE-400i, and what are its core advantages? A1: The SW30ULE-400i is a high-performance low-energy RO membrane, whose core advantages are ultra-low energy consumption (operating pressure 1.5-2.5 MPa, energy consumption per ton of water ≤1.2 kWh) and high flux (28-32 LMH), which can stably achieve high-efficiency water purification and reduce operation costs. Q2: What is the applicable water quality of the SW30ULE-400i? A2: It is suitable for raw water with TDS ranging from 500-5000mg/L, such as surface water, groundwater, industrial wastewater and other low to medium salinity water. Q3: What is the service life of the SW30ULE-400i? A3: Under standard operation and maintenance conditions, the service life is 3-5 years, and the annual flux attenuation rate is ≤8%. Q4: Why can the SW30ULE-400i achieve high flux while ensuring ultra-low energy consumption? A4: It adopts modified polyamide composite material and optimized membrane structure design, which reduces the resistance of water molecules passing through the membrane, so that high water production flux can be achieved under lower operating pressure, thereby reducing energy consumption. Q5: What factors will affect the energy-saving effect and flux of the SW30ULE-400i? A5: The main factors include raw water quality, operating parameters (pressure, flux), pretreatment effect and membrane fouling. Q6: How to maintain the SW30ULE-400i to ensure its long-term ultra-low energy consumption and high flux? A6: Do a good job in raw water pretreatment to avoid membrane pollution; monitor operating parameters in real time and keep them within the standard range; clean the membrane regularly to remove scaling and pollution; avoid sudden pressure changes during startup and shutdown.