LP2540 Low Pressure Brackish Water RO Membrane | Standard Commercial Desalination Element
Introduction:To build stable and reliable pretreatment protection for commercial water purification systems, our factory provides full-series filtration equipment and consumables including high-precision Liquid Filters and automatic Self Cleaning Filter, which effectively intercept suspended solids and reduce membrane fouling risks. The LP2540 low pressure brackish water RO membrane is a standard-grade commercial reverse osmosis element developed for conventional brackish water and well water treatment scenarios. Adopting classic polyamide thin film composite technology, this 2.5×40 inch standard membrane maintains stable desalination performance under conventional low operating pressure. It can efficiently remove dissolved salts, heavy metal ions, colloidal impurities and organic pollutants in medium and low TDS raw water. With balanced flux, stable rejection and strong water quality adaptability, it serves as the most mainstream cost-effective replacement solution for small and medium-sized commercial RO water treatment systems.
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Product Introduction
The LP2540 low pressure RO membrane is a classic standard brackish water purification element in our commercial membrane product line, positioned for general-purpose small and medium water treatment projects. Different from ULP ultra-low pressure and XLE extra-low energy membranes that focus on extreme energy saving, the LP2540 model focuses on balanced performance, high stability and wide adaptability, perfectly matching most conventional commercial RO skids and well water desalination equipment. In actual water treatment operation, stable pretreatment support is essential to extend membrane service life. Professional pretreatment equipment such as Liquid Filters and Self Cleaning Filter can effectively filter large particle sediments and turbidity substances in raw water, avoid mechanical scratches and surface contamination of the membrane, and ensure long-term stable operation of the LP2540 membrane element. With standard 2.5 inch × 40 inch industry size, universal compatibility and mature and stable formula technology, this membrane has become the preferred conventional replacement membrane for engineering contractors and water treatment maintenance companies.
Product Overview
Most rural drinking water renovation, hotel commercial water use and small factory process water projects adopt conventional low-pressure RO systems, which do not require ultra-low pressure energy-saving design, but pursue stable water production rate, consistent desalination effect and low failure rate. The LP2540 low pressure RO membrane is designed for such universal working conditions. It adopts high-purity polyamide thin film composite structure, with uniform membrane pore distribution and high filtration precision. It can stably cope with fluctuating raw water quality such as underground well water, surface brackish water and tap water. Compared with high-pressure membrane elements, it has lower operating energy consumption; compared with ultra-low pressure membranes, it has stronger anti-interference ability to complex water quality and more stable long-term performance. All products pass strict factory pressure resistance test and water quality detection, with qualified rate close to 100%, meeting the long-term continuous operation needs of various general commercial water treatment projects.
Working Principle
The LP2540 low pressure brackish water RO membrane operates based on mature pressure-driven reverse osmosis separation principle. Under stable low system driving pressure, raw water flows uniformly along the tangential direction of the spiral-wound membrane surface. The dense polyamide active filtration layer forms a precise nano-level interception barrier, which can fully trap dissolved salt ions, calcium and magnesium scale components, colloidal suspended solids, organic macromolecules and trace microbial pollutants in raw water. Only pure water molecular groups can penetrate the membrane layer to form qualified purified water, and the concentrated water containing intercepted impurities is discharged separately. Cooperating with front-end graded pretreatment composed of Liquid Filters and Self Cleaning Filter, it can effectively control feed water SDI within the standard range, reduce membrane surface load, avoid early fouling and flux attenuation, and maximize the stable operation cycle of the membrane element.
Technical Specifications
Item | Parameter |
|---|---|
Product Model | LP2540 Standard Low Pressure RO Membrane |
Membrane Type | Low Pressure Brackish Water Thin Film Composite Membrane |
Product Size | 2.5 inch × 40 inch |
Effective Membrane Area | 55 sq.ft (5.1 ㎡) |
Nominal Water Flux | 900 GPD |
Stable Salt Rejection Rate | ≥98.8% |
Standard Test Pressure | 150 psi (1.05 MPa) |
Max Operating Pressure | 41 bar (4.1 MPa) |
Max Feed Water TDS | 6000 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
1. Balanced and stable comprehensive performance:
Adopting mature classic membrane formula, it has balanced water flux and salt rejection, no extreme performance attenuation, stable water quality output throughout the operation cycle, and is suitable for most general commercial water treatment scenarios.
2. Wide raw water adaptability:
It can adapt to multiple water sources such as well water, brackish water, surface water and tap water, with a maximum feed TDS of 6000ppm, stronger tolerance to medium and low salinity raw water than ultra-low energy membranes.
3. Excellent operational stability:
Reasonable pressure bearing design, not easy to deform under long-term low-pressure operation. The membrane structure is stable, with low fouling rate and long continuous operation cycle.
4. Universal interchangeability:
Strictly in accordance with international standard 2540 size, fully compatible with all mainstream 2.5-inch membrane pressure vessels, realizing plug-and-play direct replacement without equipment modification.
5. High cost performance for mass engineering:
Mature process, stable quality and competitive factory price. It is the most suitable conventional replacement membrane for bulk engineering projects and long-term cooperative water treatment companies.
Application Scenarios
Rural drinking water improvement and underground well water desalination purification projects
Commercial pure water equipment for hotels, schools, office buildings and shopping malls
Small and medium-sized factory production auxiliary water and cleaning water preparation
Light industrial brackish water treatment and circulating water purification system
Conventional skid-mounted RO water treatment equipment and decentralized water supply projects
Water pretreatment and advanced purification of slightly polluted surface water
FAQ
Q1: What is the positioning difference between LP2540 and ULP/XLE series membranes?
A1: LP2540 is a standard low-pressure universal membrane, focusing on stability and wide adaptability. ULP is ultra-low pressure energy-saving type, XLE is extra-low energy type. LP2540 is more suitable for conventional working conditions with general water quality and no strict energy-saving requirements.
Q2: Can LP2540 replace ordinary imported 2540 low-pressure membranes?
A2: Yes, the size, interface and operating parameters are fully universal, which can directly replace all mainstream brand standard 2540 low-pressure RO membrane elements.
Q3: What pretreatment is required for LP2540 stable operation?
A3: It is necessary to configure complete pretreatment systems 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 accumulation.
Q4: What is the service life of LP2540 low pressure membrane?
A4: Under standard pretreatment and normal operating conditions, the comprehensive service life can reach 2–3 years, with stable performance and low attenuation.
Q5: Is LP2540 suitable for high TDS brackish water?
A5: It supports raw water TDS up to 6000ppm, which is superior to XLE ultra-low energy membranes. It is the best choice for medium salinity brackish water conventional treatment projects.
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