Membrane elements 24 m³/h

The RO membrane element is a key part of the filtration unit needed to provide fine water purification. It removes not only salts and sediments but also bacteria and viruses. If you use a reverse osmosis filter, you should replace the worn membranes every 1-3 years. In the Ecosoft online shop, you can buy a membrane from various brands and of various specifications, suggested for different operating conditions.

The reverse osmosis membrane is a multilayer sheet made of thin-film polymers, which are designed for filtration efficiency. It allows only small water molecules to pass through it and efficiently blocks larger impurities.

The structure is complex and may vary. The standard version has three layers with different functions. The thinnest active layer removes salts, microorganisms, and other contaminants when water is forced by the high pressure through its tiny pores. Others are supporting layers that provide durability and stability to the whole membrane. The films are rolled around a permeate collection tube and work together. This structure is known as a spiral wound membrane element that is a key part of any RO filter.

A membrane for water treatment can be used in various filtration systems, not only in reverse osmosis filters. They differ in pore size and are divided into the following groups:

• microfiltration, suited for pre-treatment or wastewater filtration;
• ultrafiltration, sufficient for drinking water treatment;
• nanofiltration, removing organic matter, pesticides, and hardness for water softening;
• reverse osmosis (< 0.001), providing the finest purification.

The above types of water filtration membranes can be made from various materials, like PES, PVDF, Cellulose Acetate, etc. For RO filter membranes, polyamide is commonly used, which also breaks down into two types:

• Thin-film composite membranes. They are durable and efficient, and allow for high water flow.
• Cellulose triacetate membranes. They are used to treat water with disinfection byproducts. To prevent early wear caused by contact with chlorine, they should be frequently cleaned.

However, regular maintenance of membrane elements of any type is crucial to ensure their consistent performance. To extend the longevity of this delicate and important part, the system can include pre-filtration units with other filtration materials, like activated carbon, mineral clinoptilolite, calcium carbonate, etc.

In our catalogue, you’ll find membranes with different performance parameters. Above all, consider the following ones:

• Salt Rejection Rate. Measures the percentage of removed contaminants. Membranes in our shop have 99.0%, 99.2%, 99.5%, 99.7% rejection.
• Permeate Flow Rate. Shows the membrane productivity: how much purified water is produced. We offer models that produce 3.8 m³/day, 9.5 m³/day, or even 42.0 m³/day.
• Recovery Rate. Shows how much feedwater is converted into purified water. The typical range is 75%–85%.
• Maximum operating pressure and temperature. These are the highest levels that a membrane can handle without being damaged. Typically, these parameters are 41 bar and 45 °С, respectively.

Other operating conditions can also restrict the choice. They include free chlorine tolerance, a pH range for operational and chemical cleaning modes, etc. The performance parameters affect the price. You will find the details in each product description on our website.

Choose the membrane element that complies with the filtration system and your operating conditions, like treated water quality. The active area is important and can vary from 2.6 m² to 41 m² or more. The higher the salt rejection, the purer the water after filtration. A low recovery rate results in increased water consumption due to higher wastewater generation, which is not a beneficial option for any enterprise. Energy consumption is another factor to consider. It’s better to prefer cost-effective membranes with high rejection rates, low energy consumption, and high recovery rates.

On our website, you can order all you may need for RO filtration systems and membrane replacement. We offer filters of various types, iron softeners, RO membrane elements, accessories, and consumables, including our patented filter media ECOMIX. Moreover, the offer tailored to unique needs is available. To discuss the details, please contact us.