ULP21-2540 Low Pressure Brackish Water RO Membrane Element | Energy Saving RO Membrane
Introduction:The ULP21-2540 is a classic low-pressure energy-saving RO membrane belonging to the ULP ultra-low pressure series, focusing on solving the problems of high energy consumption, large equipment volume and high operating cost of traditional small water treatment equipment. Adopting advanced spiral-wound membrane structure and nano-level thin-film composite technology, the membrane surface is precisely optimized to reduce water flow resistance while ensuring interception accuracy. The integral reinforced membrane support layer effectively avoids membrane deformation and flux attenuation caused by long-term pressure operation. This model features a standard 2.5×40 inch compact size, which is suitable for various small skid-mounted pure water equipment, household and commercial integrated water purifiers, and laboratory water treatment devices. Compared with ordinary conventional RO membranes, ULP21-2540 can reach standard water production and desalination effects under 30% lower operating pressure, greatly reducing the load of high-pressure pumps and system power consumption. All products are strictly tested for water flux, salt rejection and pressure resistance before delivery, with stable and consistent quality, perfectly meeting the long-term operation needs of small and medium-sized brackish water purification projects.
We're here to help:
Easy ways to get the answers you need.
Product parameter:
To establish a complete stable and energy-saving water treatment purification system, our factory provides full-series industrial filtration supporting equipment and consumables, including high-precision Liquid Filters and fully automatic Self Cleaning Filter, which provide graded pre-filtration protection for all types of RO membrane systems and effectively reduce membrane fouling risks. The ULP21-2540 Low Pressure Brackish Water RO Membrane is a newly optimized energy-saving miniature reverse osmosis membrane element, specially developed for small and medium-sized commercial water purification and brackish water treatment projects. Different from traditional standard-pressure RO membranes that require high pump pressure, this ULP series membrane adopts upgraded low-resistance hydrophilic polyamide thin film composite material. It can maintain excellent salt rejection and stable water production flux under low operating pressure, effectively removing dissolved salts, heavy metal ions, water scale precursors, organic colloids and suspended impurities in well water, underground brackish water and surface water. With compact size, low energy consumption and long service life, it is the most cost-effective replacement solution for small-scale energy-saving pure water systems globally.
Working Principle
The ULP21-2540 low-pressure brackish water RO membrane follows the pressure-driven reverse osmosis separation principle. Under low and stable system driving pressure, raw brackish water flows evenly along the tangential direction of the spiral-wound membrane surface. The high-density polyamide active interception layer forms a nano-scale precise filtration barrier, which can effectively trap dissolved salt ions, calcium and magnesium scale ions, heavy metal substances, organic macromolecules and colloidal suspended solids in the raw water. Only water molecules and trace beneficial microelements can smoothly penetrate the membrane layer to form high-purity permeate water, while concentrated water containing a large amount of impurities and salts is discharged separately through the concentrated water channel. In actual system operation, cooperating with front-end matched Liquid Filters and Self Cleaning Filter for multi-stage precision pretreatment, it can effectively remove large-particle sediment, floating impurities and algae in raw water, stabilize feed water SDI value within the standard range, prevent membrane surface scratch and blockage, and maximize the stable operation cycle and comprehensive service life of the membrane element.
Technical Specifications
Item | Parameter |
|---|---|
Product Model | ULP21-2540 Low Pressure RO Membrane |
Membrane Type | ULP Ultra-low Pressure Brackish Water Thin Film Composite Membrane |
Product Size | 2.5 inch × 40 inch |
Effective Membrane Area | 5.1 ㎡ (55 sq.ft) |
Nominal Water Flux | 950 GPD |
Stable Salt Rejection Rate | ≥99.0% |
Standard Test Pressure | 150 psi (1.05 MPa) |
Max Operating Pressure | 41 bar (4.1 MPa) |
Max Feed Water TDS | 5000 ppm |
Operating Temperature Range | 5℃ – 45℃ |
Working pH Range | 2 – 11 (Support regular acid-base chemical cleaning) |
Feed Water SDI Requirement | ≤4.0 |
Core Advantages
Ultra-low pressure energy-saving operation:
Optimized membrane resistance design, normal water production and desalination can be completed under low driving pressure, which effectively reduces the operating load of high-pressure pumps, cuts system power consumption by 25%-30%, and greatly reduces long-term operating costs for users.
Stable high desalination performance:
Adopting high-precision polyamide composite layer, the stable salt rejection rate is as high as 99.0%. It can efficiently remove various dissolved salts and harmful impurities in brackish water and well water, ensuring long-term stable output of high-purity qualified water.
Excellent anti-fouling and easy-cleaning performance:
The membrane surface is modified with super hydrophilic technology, which reduces the adhesion of organic matter, colloids and scale substances. It is not easy to form dirt accumulation, reduces chemical cleaning frequency, and lowers daily maintenance difficulty and cost.
Compact and versatile installation:
Standard 2.5×40 inch industry universal size, lightweight and small in size. It is perfectly compatible with all mainstream 2.5-inch membrane pressure vessels, realizing plug-and-play direct replacement without equipment modification and pipeline adjustment.
High cost performance and wide adaptability:
It covers all small and medium-sized low-TDS brackish water treatment scenarios, with stable performance, long service life and competitive factory price. It is an ideal alternative to imported ultra-low pressure RO membrane elements.
Application Scenarios
Small and medium commercial pure water preparation for hotels, shopping malls, schools and office buildings
Underground well water, groundwater and rural brackish water drinking water purification projects
Small factory industrial process water, cleaning water and auxiliary production water treatment
Food, beverage and daily chemical small-scale production supporting pure water equipment
Laboratory miniature pure water equipment and water quality testing pretreatment system
Decentralized domestic water supply and small skid-mounted mobile water purification equipment
FAQ
Q1: What kind of raw water is ULP21-2540 suitable for?
A1: This membrane is specially designed for low and medium salinity brackish water, well water and surface water with TDS below 5000ppm. It is widely used in civilian and commercial water purification, not applicable for high-salinity seawater and heavily polluted industrial wastewater.
Q2: Why is ULP series membrane more energy-saving than ordinary RO membranes?
A2: ULP ultra-low pressure series adopts low-resistance hydrophilic membrane formula and structural optimization design. It can reach rated water flux under 1.05MPa low pressure, while ordinary membranes need 1.5MPa or higher pressure, realizing significant energy saving effect.
Q3: What pretreatment equipment needs to be matched?
A3: To ensure long-term stable operation of the membrane, it is necessary to support complete pretreatment equipment such as Liquid Filters and Self Cleaning Filter to control feed water SDI≤4, remove suspended solids and sediments, and avoid membrane surface damage and fouling.
Q4: Can it replace other brands of 2540 low-pressure membranes?
A4: 100% universal and interchangeable, fully consistent with international standard 2540 size and installation interface, no need to modify equipment, direct replacement and quick commissioning.
Q5: What is the service life of ULP21-2540 membrane?
A5: Under standard pretreatment, stable operating parameters and regular chemical cleaning maintenance, the comprehensive service life can reach 2–3 years, with low performance attenuation rate.
Related Products
Anti‑Fouling RO Membrane for Wastewater Reuse Treatment
High Salt Rejection RO Membrane for Brackish Water Treatment
Custom Reverse Osmosis Membrane for Water Treatment Solution
Low Pressure RO Membrane for Commercial Water Treatment Unit
Please fill in your procurement needs and contact information
