VONTRON XLP11-4040 Membrane Element
Brief Introduction
XLP11-4040 – Newly developed by Vontron Technology Co., Ltd. XLP series of extremely low-pressure aromatic polyamide compound membrane elements can work under ultra-low pressure to reach as high permeate flow and salt rejection as regular low-pressure membrane element can, and is applicable to desalination of surface water and underground water. It operates under approximately half the operating pressure of a regular low-pressure composite membrane and achieves a salt rejection rate of up to 99.0%, which can decrease the investment costs for such relevant facilities as pump, piping, and container, etc. and the operating cost for the RO system, thus increasing the economic efficiency. Being suitable for the desalination treatment of those water sources with low salinity not requiring high salt rejection such as surface water, underground water, tap water, and municipal water, which have a salt concentration lower than 1000 ppm, XLP series of membrane elements is particularly applicable to the second-pass desalination with two-pass RO system, and is mainly applied to numerous applications of various scales, such as pure water production, boiler water replenishment, foodstuff processing, and pharmaceutical production.
| Model | Active Membrane Area ft2(m2) |
Average Permeate GPD(m3/d) |
Stable Rejection Rate % |
Min. Rejection Rate % |
| XLP11-4040 | 90（8.4） | 2000（7.6） | 98.0 | 97.5 |
| Testing Conditions |
Testing Pressure Testing Solution Temperature Concentration of Testing Solution (NaCl) pH value of Testing Solution Recovery Rate of Single Element |
100 psi (0.69MPa) 25˚C 500ppm 7.5 15% |
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| Operation Limits & Conditions | Max. Working Pressure Max. Volume of Feedwater Max. Temperature of Feedwater Max. Feedwater SDI15 pH Range of Feedwater during Continuous Operation pH Range of Feed Water during Chemical Cleaning Residual Chlorine Concentration of Feed Water Max. Pressure Drop of Single Membrane Element Max. Pressure Drop of Single Pressure Vessel with Six RO Membranes |
600psi(4.14MPa) 16gpm（3.6 m3/h） 4˚C 5 3~10 2~12 <0.1ppm 15psi (0.1MPa) 50psi (0.34MPa) |
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