Energy-efficient low-pressure reverse osmosis ELP series membrane elements
Detailed description
(1) Product Positioning
ELP-series membrane elements are suitable for desalination of surface water, groundwater, and municipal tap water with a salt content of 2,000 mg/L or less, and are widely used in applications such as bottled water production, boiler feedwater, and the preparation of high-purity water in the semiconductor industry.
(2) Product Features
The ELP series membrane elements operate at approximately two-thirds the pressure of conventional brackish‑water membranes, with a desalination rate of 99.5%, and can achieve the same high water production and high desalination performance as conventional brackish‑water membranes under ultra‑low operating pressures.
(3) Product Performance
| Model number | Average water production GPD(m 3 /d) |
Stable desalination rate (%) |
Minimum desalination rate (%) |
Effective membrane area ft 2 (m 2) |
Inlet grid thickness (mil) |
| ELP-8040 | 10500 (39.8) | 99.5 | 99.2 | 400 (37.2) | 31 |
| ELP-8040-440 | 12000 (45.4) | 99.5 | 99.2 | 440 (40.9) | 28 |
| ELP-4040 | 2400 (9.0) | 99.5 | 99.2 | 85 (7.9) | 31 |
(a) Standard test conditions: 1500 ppm NaCl, 150 psi (1.03 MPa), 25°C, pH = 7–8, recovery rate of 15%.
(b) The water production of a single membrane element may vary within a range of ±15%.
(c) Operating and Cleaning Limits
| Maximum operating pressure | 600 psi (4.14MPa) | Permitted free chlorine concentration | ˂ 0.1 ppm |
| Maximum inlet water temperature | 45℃ | Influent pH range during continuous operation | 3~10 |
| Maximum inflow rate | 17.0 m³/h (8040), 3.6 m³/h (4040) | pH range of the feed water during chemical cleaning | 1~12 |
| Maximum water intake | 5 | Maximum allowable pressure drop per single membrane element | 15 psi (0.1 MPa) |
Keywords: Energy-efficient low-pressure reverse osmosis ELP series membrane elements
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