Copyright © 2026 Runmo, All rights reserved.
Menu
ULP/XULP series of membrane elements is suitable for desalination treatment of surface water, groundwater, tap water, and municipal water with salt content less than 2000 ppm. It is mainly used in various fields of industry, such as pure water, boiler recharge water, food processing, and pharmaceutical manufacturing.
It is mainly used in various fields of industry, such as pure water, boiler recharge water, food processing and pharmaceutical manufacturing.
| Model | Membrane ft2 (m2) | Average Permeate GPD(m3/d) | Stable Rejection % | Min. Rejection% |
| RM-XULP-4021 | 42(3.9) | 950(3.6) | 99.0 | 97.5 |
| RM-XULP-4040 | 85(7.9) | 2000(7.5) | 99.0 | 97.5 |
| RM-ULP-2521 | 16(1.5) | 300(1.13) | 97.5 | 97.0 |
| RM-ULP-2540 | 33(3.0) | 750(2.83) | 99.0 | 97.0 |
| RM-ULP-4021 | 42(3.9) | 950(3.6) | 99.0 | 98.0 |
| RM-ULPD-4040 | 85(7.9) | 2300(8.7) | 98.5 | 98.0 |
| RM-ULPH-4040 | 85(7.9) | 2000(7.6) | 99.0 | 98.5 |
| RM-ULP31-4040 | 89(8.3) | 1900(7.2) | 99.5 | 99.0 |
| RM-ULP-8040 | 400(37) | 10500(39.5) | 99.0 | 98.5 |
| Testing Pressure | 150 psi (1.03MPa)/100 psi (0.69MPa) |
| Temperature of Testing Solution | 25 ℃ |
| Concentration of Testing Solution (NaCl) | 1500ppm |
| pH Value of Testing Solution | 7.5 |
| Recovery Rate of Single Element | 15%(8040、4040、2540)；8% (4021、2521) |
| Max. Working Pressure | 600psi（4.14MPa） | Max. Feed Water SDI 15 | 5 |
| Max. Feed Water Flow | 75gpm（17 m 3 /h）For 8040 16gpm（3.6 m 3 /h）For 4040、4021 6.0gpm（1.4 m 3/h）For 2521、2540 | Max. Feed Water COD | 10ppm |
| Max. Feed Water BOD | 5ppm | ||
| Max. Feed Water TOC | 10ppm | ||
| Max. Feed Water Temperature | 45℃ | Residual Chlorine Concentration of Feed Water | ＜ 0.1ppm |
| Max. Feed Water TDS | 2000ppm | pH Range of Feed Water During Continuous Operation | 2 ～ 12 |
| Max. Feed Water Hardness | 60ppm | Max. Pressure Drop of Single Element | 15psi（0.1MPa） For8040、4040、2540 10psi（0.07MPa） For2521、4021 |
| Max.Turbidity NTU | 1 |
The main advantages of ultra low pressure RO membranes include:
These features make ULP membranes suitable for applications requiring energy-efficient reverse osmosis solutions.
The main difference between ULP RO membranes and standard RO membranes is the required operating pressure.
ULP membranes are designed to achieve effective water purification at lower pressure, while standard RO membranes typically require higher pressure to achieve similar separation performance.
Choosing the right RO membrane depends on feed water quality, required water quality, and system operating conditions.
ULP reverse osmosis membranes are widely used in:
They are especially suitable for projects requiring energy-saving reverse osmosis systems.
Yes. ULP membranes operate at lower pressure, which can help reduce energy consumption and decrease the investment requirements for pumps and related equipment.
By improving system efficiency, ULP reverse osmosis membranes provide a cost-effective solution for industrial water treatment applications.
For professional membrane selection and customized water treatment solutions, please Contact Us.
highly purified water in the electronics and power industries.
It is suitable for desalination treatment of surface water, groundwater, tap water, and municipal water with salt content less than 10,000 ppm. It is mainly used for industrial pure water of various scales, boiler feed water of power plants, and other industrial water. It can also be used for the treatment of brackish water applications such as high-concentration saline wastewater and beverage water manufacturing.In the
FR series, the surface of this membrane was treated by special technology, which changed the electric charge and smoothness of the membrane surface, increased the hydrophilicity of the membrane surface, thus reducing the contamination of pollutants and microorganisms on the membrane surface, and
achieving the purpose of reducing the contamination of membrane components and prolonging the service life.
It is mainly used in various fields of industry, such as pure water, boiler recharge water, food processing and pharmaceutical manufacturing.
SW series membrane elements are suitable for the treatment of seawater and brackish water with high concentration. They can be used for the treatment of seawater desalination, desalination of brackish water with high concentration, boiler feed water in power plants, wastewater reuse, concentration and recovery of high-value-added substances such as food and medicine, etc.
It is mainly used in various fields of industry, such as pure water, boiler recharge water, food processing and pharmaceutical manufacturing.
Using modified PAN material, the ultrafiltration membrane has outstanding separation performance, good oxidation resistance, thermal stability, good mechanical properties, and permanent hydrophilicity. Despite the advantages mentioned above, the disadvantage is that the anti-pollution performance is slightly worse. For this reason, we overcome the above shortcomings by modifying the materials and membranes, and making their performance more excellent. Membrane filament has high strength and a breakage rate of less than three thousandths:
Unique central pipe bracket with uniform filament distribution and smooth water flow can prolong the service life of the membrane filament; reliable performance, water washing, and medication washing will not affect the normal use of the membrane. According to the water quality conditions, full filtration and cross-flow filtration can be selected. Full-volume filtration has the advantages of energy saving and high water utilization rate; cross-flow filtration can discharge pollutants in time, reduce the times of membrane cleaning, and prolong the service life of membrane components. Compared with traditional filtration methods, this system has the advantages of high automation, small floor area (only 1/2 of traditional filtering methods), high filtration accuracy, unattended, and it is a good option for reverse osmosis pretreatment.
It is mainly used in various fields of industry, such as pure water, boiler recharge water, food processing and pharmaceutical manufacturing.
Polyvinylidene fluoride (PVDF) is used as the material, and its greatest characteristic is its high chemical stability. The chemical stability determines its outstanding antioxidant ability and acid and alkali resistance.
In order to ensure the normal operation of membrane components and stabilize water flux, it is necessary to clean the membrane regularly. The most effective method is oxidant cleaning. But oxidants can damage the membranes. The ability of polyvinylidene fluoride (PVDF) to withstand oxidants (sodium hypochlorite, etc.) is more than 10 times that of polyethersulfone, polysulfone, and other materials, thus greatly prolonging its service life. Polyvinylidene fluoride (PVDF) film also has strong flexibility. The results of the practical case investigation show that the PVDF film has the advantage of a minimum breakage rate. It has been more and more widely used in the field of sewage treatment. Sketch of characteristics of Runmo PVDF membrane module :
1. High antioxidant and cleaning resistance: High-quality polyvinylidene fluoride material determines the enhanced chemical stability of membrane products, and the high chemical stability of the membrane makes the membrane resistant to high concentration oxidant cleaning, thus effectively preventing microbial reproduction such as bacteria;
2. High Flux: High Porosity of Products, High Flux of Components;
3. High Strength: Good flexibility: Membrane wire has high strength and good flexibility. It is not easy to break during cleaning;
4. High pollution resistance: through hydrophilic modification, the product's pollution resistance is greatly improved;
5. Good Water quality : Ultrafiltration membrane has a small nominal aperture, so it can remove almost all suspended particles, microorganisms, colloids, pathogens and bacteria in the application of this product;
6. Long service life: Components usually adopt external pressure structure which is not easy to plug. They have larger filtering area and higher pollution interception, easy to clean, and more thorough. They can remove the fouling on the membrane surface in time, so that the service life of the membrane is longer.
It is mainly used in various fields of industry, such as pure water, boiler recharge water, food processing and pharmaceutical manufacturing.