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ULP（Ultra Low Pressure) Membranes
DownloadBrief Introduction
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.
Scope of Application
It is mainly used in various ffelds of industry, such as pure water, boiler recharge water, food processing and pharmaceutical manufacturing.
- ULP/XULP series of membrane elements performance
| Model | Membrane ft2 (m2) | Average Permeate GPD(m3/d) | Stable Rejection % | Min. Rejection% |
| RM-XULP-4021 | 42(3.9) | 950(3.6) | 99.0 | 97.5 |
| RM-XULP-4040 | 85(7.9) | 2000(7.5) | 99.0 | 97.5 |
| RM-ULP-2521 | 16(1.5) | 300(1.13) | 97.5 | 97.0 |
| RM-ULP-2540 | 33(3.0) | 750(2.83) | 99.0 | 97.0 |
| RM-ULP-4021 | 42(3.9) | 950(3.6) | 99.0 | 98.0 |
| RM-ULPD-4040 | 85(7.9) | 2300(8.7) | 98.5 | 98.0 |
| RM-ULPH-4040 | 85(7.9) | 2000(7.6) | 99.0 | 98.5 |
| RM-ULP31-4040 | 89(8.3) | 1900(7.2) | 99.5 | 99.0 |
| RM-ULP-8040 | 400(37) | 10500(39.5) | 99.0 | 98.5 |
- ULP/XULP series of membrane elements Testing Conditions
| Testing Pressure | 150 psi (1.03MPa)/100 psi (0.69MPa) |
| Temperature of Testing Solution | 25 ℃ |
| Concentration of Testing Solution (NaCl) | 1500ppm |
| pH Value of Testing Solution | 7.5 |
| Recovery Rate of Single Element | 15%(8040、4040、2540)；8% (4021、2521) |
- ULP/XULP series of membrane elements Operation Limits & Conditions
| Max. Working Pressure | 600psi（4.14MPa） | Max. Feed Water SDI 15 | 5 |
| Max. Feed Water Flow | 75gpm（17 m 3 /h）For 8040 16gpm（3.6 m 3 /h）For 4040、4021 6.0gpm（1.4 m 3/h）For 2521、2540 |
Max. Feed Water COD | 10ppm |
| Max. Feed Water BOD | 5ppm | ||
| Max. Feed Water TOC | 10ppm | ||
| Max. Feed Water Temperature | 45℃ | Residual Chlorine Concentration of Feed Water |
＜ 0.1ppm |
| Max. Feed Water TDS | 2000ppm | pH Range of Feed Water During Continuous Operation |
2 ～ 12 |
| Max. Feed Water Hardness | 60ppm | Max. Pressure Drop of Single Element | 15psi（0.1MPa） For8040、4040、2540 10psi（0.07MPa） For2521、4021 |
| Max.Turbidity NTU | 1 |
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