The LNDM series nanofiltration membrane elements are high-performance membrane products meticulously crafted using advanced separation technology, designed specifically for efficient, selective separation and water softening. Nanofiltration technology operates between ultrafiltration and reverse osmosis, effectively retaining multivalent ions, organic matter, and some monovalent salts. It significantly reduces hardness and organic pollutants while maintaining high water flux and lower operating pressure. This product series, with its stable separation performance, broad applicability, and optimized operational economy, serves as an ideal core component for fields such as advanced drinking water purification, material separation/concentration, and special wastewater treatment.
Efficient Selective Separation: Capable of efficiently removing multivalent ions (hardness components like calcium, magnesium), organic matter (e.g., pesticides, pigments), bacteria, and viruses from water, while maintaining a higher passage rate for monovalent salts (e.g., sodium chloride), achieving selective softening and purification.
High Rejection Rate and Stability: Offers a standard rejection rate as high as 98%-99%, with reliable and stable performance, ensuring long-term compliance of product water with strict application requirements.
Broad Application Adaptability: Suitable for various feed water conditions, widely applicable from brackish water softening and high-quality drinking water preparation to specific material separation and recovery.
Optimized Operational Economy: Compared to reverse osmosis, nanofiltration membranes typically operate at lower pressures, helping to reduce system energy consumption and operational costs.
The LNDM series nanofiltration membrane elements, with their unique separation characteristics, are an ideal choice for the following applications:
High-Quality Drinking Water and Beverage Water Preparation: Deeply removes organic matter, pesticide residues, odors, and partial hardness from water, improving taste while retaining beneficial minerals, producing safe and healthy premium drinking water.
Industrial Water Softening and Pretreatment: Serves as a softening unit for boiler feed water or process water, effectively preventing scaling and protecting downstream equipment; or acts as pretreatment for RO systems, reducing the organic fouling burden.
Material Separation and Recovery: Used in industries like food, pharmaceuticals, and bioengineering for specific separation processes such as sugar solution desalting, dye desalting, antibiotic concentration, and purification.
Special Wastewater Treatment and Resource Recovery: Used for advanced treatment of complex wastewater like landfill leachate and electroplating wastewater, selectively separating and recovering valuable components to achieve wastewater resource recovery and emission reduction.
We provide complete nanofiltration membrane elements and system technical support. Based on your specific water quality and treatment goals, we can recommend the most suitable model and process solution to help you achieve efficient and economical water treatment objectives.
| Series | Model | Standard Water Production | Salt Rejection | NaCl Permeate Flow* |
| LNDM | LNDM40-4A | 10000 GPD (37.9 m³/d) | 99% | 400 gpd (1.5 m³/d) |
| LNDM40-3B | 15000 GPD (56.8 m³/d) | 98% | – | |
| LNDM40-4A (Note) | 2000 GPD (7.5 m³/d) | 99% | 90 gpd (0.34 m³/d) | |
| LNDM40-3B (Note) | 2400 GPD (9.1 m³/d) | 98% | – | |
| LNAM | LNAM40-5D | 8000 GPD (30.3 m³/d) | – | – |
| LNAM40-4D | 9000 GPD (34.1 m³/d) | – | – | |
| LNAM40-3D | 12000 GPD (45.4 m³/d) | – | – |
Note: 1. Some model parameters appear repeated in the table. Please refer to the latest technical manual or consult for actual selection.
2. Detailed parameters such as NaCl permeate flow may vary by specific model and test conditions.
*3. The LNAM series is a standard high-productivity series. Specific separation performance should be referenced in detailed specifications.*
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A: You receive comprehensive water treatment services including detailed system documentation, operator training, warranty coverage, and access to our technical support team. We also offer optional annual maintenance contracts for long-term industrial water system support.
A: We maintain strategic inventory of critical water treatment spare parts. For urgent needs, we expedite shipping to minimize your RO system maintenance downtime. Our support team manages parts identification and logistics.
A: We prioritize emergency cases. For critical issues halting operation, we provide initial response within 4-8 business hours and work relentlessly to resolve problems, leveraging remote diagnostics for water treatment maintenance.
A: Yes. We offer comprehensive training during water plant commissioning, covering normal operation, routine water treatment maintenance, and basic troubleshooting procedures.
A: Absolutely. Our systems feature modular design. We can reassess needs and provide retrofit solutions or capacity expansions through our water treatment services to adapt to changing conditions.
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