SW30HRI-400/34i: High-Efficiency RO Membrane

SW30HRI-400/34i: High-Efficiency RO Membrane

SW30HRI-400/34i is a high-efficiency industrial RO membrane element with a spiral wound structure, specially developed for high-salt, complex water quality and high-purity water demand scenarios. 

1. Product Introduction

SW30HRI-400/34i is a high-efficiency industrial RO membrane element with a spiral wound structure, specially developed for high-salt, complex water quality and high-purity water demand scenarios. It adopts high-purity aromatic polyamide composite membrane material, which is non-toxic, tasteless and free of harmful substance leaching, ensuring the safety of produced water. The membrane element adopts a standardized 8-inch design, with a compact structure and strong compatibility, which can be directly matched with most industrial RO water treatment systems. Unlike ordinary industrial RO membranes, SW30HRI-400/34i focuses on "high efficiency, stability and anti-pollution", integrating optimized flow channel design and precision coating technology, which can effectively reduce concentration polarization, slow down membrane fouling, and ensure stable performance during long-term operation. It is mainly used for industrial pure water preparation, deep water purification and sewage reuse, and can adapt to various complex water quality environments, providing reliable water purification support for various industrial fields.

2. Application Scenarios

SW30HRI-400/34i has strong adaptability and is widely used in various high-demand industrial water treatment scenarios, relying on its core advantages of high desalination rate and stable operation. First, industrial pure water preparation: applicable to electronic, pharmaceutical, chemical and other industries, used to prepare high-purity production water, ensuring that the water quality meets the strict requirements of production processes. Second, municipal sewage reuse: used in municipal sewage treatment plants to deeply treat secondary effluent, realize water resource recycling, and reduce water resource waste. Third, drinking water plant deep purification: used in drinking water plants to further remove salts, heavy metals and micro-pollutants in raw water, ensuring that the produced water meets national drinking water standards. Fourth, wine-making enterprises: used in brewing water purification, removing impurities and harmful substances in water, avoiding water quality problems affecting wine flavor and quality. Fifth, mechanical-electrical supporting water systems: used in cooling water, pure water preparation systems of mechanical and electrical equipment, protecting equipment from corrosion and scaling, extending equipment service life. In addition, it is also applicable to RO systems in gas pipeline supporting water treatment and emergency water purification equipment, providing professional water purification solutions for various scenarios.

3. Technical Parameters

The technical parameters of SW30HRI-400/34i are strictly formulated according to industrial water treatment requirements, fully reflecting its high-efficiency and stable performance characteristics, and the core parameters are as follows: membrane type is spiral wound aromatic polyamide composite membrane; specification is 8-inch (outer diameter × length: 8.0×40 inches, dry weight 22kg); nominal desalination rate ≥99.7%, bacteria rejection rate ≥99.99%, virus rejection rate ≥99.99%, organic matter rejection rate ≥99.2%; under standard conditions (25℃, 0.6MPa), water production flux is 400gpd (gallons per day), which is adjustable according to application scenarios; recommended operating pressure is 0.4-2.0MPa, operating temperature is 5-45℃, inlet water pH value is 2-11 (cleaning pH value is 1-12); inlet water Silt Density Index (SDI) ≤3, inlet water turbidity ≤0.5NTU; single membrane recovery rate is 20-30% (industrial); service life can reach 3-5 years under normal maintenance; cleaning cycle is 60-90 days, flux recovery rate after cleaning ≥98%; maximum withstand pressure is 3.0MPa, maximum pressure drop ≤0.10MPa.

4. Product Advantages

The core advantages of SW30HRI-400/34i are concentrated in high efficiency, stability, anti-pollution and long service life, which accurately solve the key pain points of industrial water treatment. First, ultra-high desalination rate: nominal desalination rate ≥99.7%, which can effectively remove salts, heavy metals and other harmful substances in water, ensuring that the produced water meets high-purity requirements. Second, stable flux: optimized flow channel design and precision coating technology reduce concentration polarization, ensure uniform water flow distribution, and the flux attenuation is less than 10% within one year of operation. Third, strong anti-pollution ability: the membrane surface adopts anti-pollution coating, which is not easy to adsorb organic matter and microbial slime, reducing fouling frequency and extending cleaning cycle. Fourth, long service life: high-quality membrane material and precision manufacturing process ensure stable performance under long-term industrial operation, service life up to 3-5 years, reducing membrane replacement costs. Fifth, strong compatibility: standardized 8-inch design, compatible with most industrial RO water treatment systems, easy to install and replace. Sixth, energy-saving and efficient: reasonable structural design reduces operating pressure, saves energy consumption, and improves water treatment efficiency.

5. Application Procedures

Combined with years of practical application experience, the application procedures of SW30HRI-400/34i are standardized and rigorous, ensuring safe and efficient operation. Pre-installation preparation: Check the integrity of the membrane element and the validity of the quality inspection report, confirm that the surface and sealing ring are not damaged; clean the system pipeline, remove impurities such as rust and sediment, and prepare installation tools and professional water quality monitoring instruments. Membrane element installation: Install it into the corresponding pressure vessel according to the specifications, ensure that the connection is tight and the direction is correct (water inlet and outlet cannot be reversed), and install the sealing ring to prevent water leakage. System commissioning: Turn on the power and water source, adjust the pressure to the recommended value (0.4-2.0MPa), adjust the flow rate to the standard range, run the system for 30-60 minutes, and check whether the desalination rate, water quality and other parameters meet the requirements. Normal operation: Regularly monitor the pressure, flux, desalination rate and water quality, and keep detailed records; if the pressure increases by 0.1MPa or the flux decreases by 15%, clean it in time. Membrane cleaning: Use professional cleaning solution (acidic or alkaline) according to the pollution type, circulate and clean at 25-35℃ for 30-60 minutes, rinse with clean water until neutral, then restart. Daily maintenance: After the system is shut down, rinse the membrane element for 5-10 minutes; regularly check the sealing ring, and properly store it in protective solution when not in use for a long time.

6. Quality Standards

SW30HRI-400/34i strictly follows international and domestic industrial quality standards and quality management systems, ensuring that each product meets high-performance requirements. Internationally, it complies with ISO 9001 quality management system certification, ASTM D4516-00(2020) test certification, NSF international drinking water safety certification and WHO drinking water quality certification. Domestically, it meets GB/T 30307-2013 "Reverse Osmosis Membrane Elements for Water Treatment", GB/T 5749-2022 "Sanitary Standards for Drinking Water" and GB/T 17219-2025 "Hygienic Safety Evaluation of Drinking Water Transmission and Distribution Equipment, Protective Materials and Water Treatment Materials". Core quality requirements: Membrane material meets industrial-grade standards, no harmful substances leached; nominal desalination rate ≥99.7%, flux recovery rate after cleaning ≥98%; each unit is subjected to 60 minutes of stable testing before leaving the factory, including performance parameter verification and structure integrity detection; the membrane has no deformation or water leakage under maximum pressure; each batch of products has a unique quality inspection code and test report, which is fully traceable.

7. Working Principle

SW30HRI-400/34i realizes high-precision water purification based on the reverse osmosis principle, combined with advanced membrane material technology and optimized spiral wound structure. Osmosis is a natural phenomenon in which water molecules spontaneously flow from a low concentration solution to a high concentration solution. Reverse osmosis applies a pressure greater than the osmotic pressure (0.4-2.0MPa) on the high concentration side (raw water side), forcing water molecules to pass through the semi-permeable membrane (pore size only 0.1 nanometers) to the low concentration side (produced water side), while retaining salts, heavy metals, bacteria and other harmful substances. The high-purity aromatic polyamide composite membrane of SW30HRI-400/34i has a dense and uniform structure, ensuring high desalination rate and purification efficiency; the optimized spiral wound structure makes the water flow evenly distributed on the membrane surface, reducing concentration polarization, slowing down membrane fouling, and ensuring stable flux and performance consistency during long-term operation.

8. Future Prospects

With the increasing emphasis on water resource recycling and industrial water quality requirements, SW30HRI-400/34i, with its core advantages of high efficiency, stability and anti-pollution, has broad development prospects. In the future, it will further optimize membrane material and structural design, improve desalination rate and flux, and reduce energy consumption, adapting to more complex water quality environments. It will also realize intelligent upgrading, integrating Internet of Things and sensor technology to realize real-time monitoring of membrane performance, automatic reminder of cleaning and replacement, and improve operation and maintenance efficiency. At the same time, it will expand application scenarios to new energy, environmental protection, medical and other emerging fields, providing high-quality water purification support for green industrial development. In addition, it will promote the standardization of industrial RO membranes, guide the industry to develop in the direction of high efficiency, energy saving and environmental protection, and make greater contributions to global water resource recycling.

9. Conclusion

SW30HRI-400/34i is a high-performance industrial RO membrane element integrating high desalination rate, stable flux, strong anti-pollution ability and long service life, which fully complies with international and domestic strict quality standards. It adopts high-purity aromatic polyamide composite membrane material and optimized spiral wound structure, which can effectively remove various harmful substances in water, provide stable and qualified produced water, and solve the key pain points of industrial water treatment such as unstable water quality and frequent membrane fouling. Widely applicable to industrial pure water preparation, municipal sewage reuse, drinking water plant deep purification, wine-making enterprises and mechanical-electrical supporting water systems, it ensures the normal operation of water treatment systems, reduces operation and maintenance costs, and becomes a core choice for modern industrial water treatment. With its excellent performance and wide adaptability, it will play a more important role in the field of industrial water treatment in the future, helping to promote the green, sustainable and standardized development of the water treatment industry.

10. Frequently Asked Questions (FAQs)

Q1: What is the core feature of SW30HRI-400/34i? A1: Its core feature is ultra-high desalination rate (≥99.7%) and stable flux, with strong anti-pollution ability and long service life, which can stably operate in complex industrial water quality environments and provide high-purity produced water.

Q2: What is the service life of SW30HRI-400/34i, and how to extend it? A2: The service life is 3-5 years under normal maintenance. Regularly clean the membrane element according to the fouling situation, keep the operating parameters within the recommended range, avoid long-term contact with strong oxidants, replace the damaged sealing ring in time, and properly pretreat the raw water to effectively extend the service life.

Q3: What is the applicable raw water TDS range of SW30HRI-400/34i? A3: It is mainly applicable to raw water with a TDS of 1000-10000mg/L, such as industrial wastewater, groundwater and municipal secondary effluent, and can adapt to slight fluctuations in salt content, which is suitable for most industrial water treatment scenarios.

Q4: Can SW30HRI-400/34i be used in household water purifiers? A4: No. SW30HRI-400/34i is an 8-inch industrial RO membrane, which is designed for industrial water treatment systems. It is not compatible with household RO water purifiers (usually 1812/2012 specifications), so it is not suitable for household use.

Q5: How to confirm the authenticity and quality of SW30HRI-400/34i? A5: Each SW30HRI-400/34i membrane element is equipped with a unique quality inspection code, which can be queried on the official quality inspection platform to verify the authenticity and quality; at the same time, each batch of products is accompanied by a formal test report, which can be used to confirm the performance parameters.