The ULP/XULP series of membrane elements (TFC - Thin Film Composite) are made of Polyamide composite membrane materials, which can achieve the desired permeate water and high desalination rate under ultra-low/extreme-low pressure operation conditions. The operating pressure is 2/3 of the conventional composite membrane pressure, and the desalination rate can reach 99.3%. It can improve economic benefits, including reducing the investment cost of related pumps, pipelines, containers, and other equipment, as well as the operation cost of the whole reverse osmosis system.
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.

The BW series is an aromatic polyamide composite membrane element for brackish water desalination. It has the characteristics of high water production and good desalination performance. In addition, it has high performance in removing soluble salts, TOC, and SiO 2, and is especially suitable for the making of
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.

SW Series is an aromatic polyamide composite membrane element for seawater desalination. By optimizing the structure of the membrane element, this series of membrane elements can increase water production. Under the same water production requirement, the number of membrane elements can be reduced. It has the characteristics of low operating pressure, low equipment investment, good desalination performance, and stability. In particular, its high desalination rate ensures that drinking water can be obtained from seawater through first-order reverse osmosis.
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.

The NF Series of nanofiltration membrane elements can achieve high permeate water and excellent desalination performance. Therefore, it is suitable for large-scale industrial and municipal water treatment systems. In use, it shows excellent ability to remove pesticides, viruses, and bacteria. It has a high ability to remove natural organic substances and a medium ability to remove total hardness. Through innovative technology, the product has a stronger film surface, strong anti-oxidation performance, and the use of ultra-low pressure mode of operation can significantly improve the system and operational economy.

Runmo Inside-Out Ultra Filtration Membrane Elements

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.

Runmo Outside-In Ultra Filtration Membrane Elements

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.