XLP Series of Membrane Element
Brief Introduction
XLP series of extremely low pressure aromatic polyamide compound membrane element newly developed by Vontron Technology Co., Ltd. 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 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 deslination treatment of those water sources with low salinity not requiring high salt rejection such as surface water, underground water, tap water and municipal water, etc. which have a salt concentration lower than 1000 ppm, XLP series of membrane element is particularly spplicable 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, etc.
Specifications and Major Properties
Model
Active Membrane Area
ft2(m2)
Average Permeated Flow
GPD (m3/d)
Stable Rejection Rate (%)
Minimum Rejection Rate (%)
Testing Conditions: Testing Pressure…………………………………100 psi (0.69Mpa)
Temperature of Testing Solution ……………..…25 ℃
Concentration of Testing Solution (NaCl)…….. 500ppm
pH Value of Testing Solution ……………….….7.5
Recovery Rate of Single Membrane Element….15%
Max. Working Pressure………………………….………. 600psi(4.14Mpa)
Max. Feedwater Flow……………………………………16gpm (3.6 m3/h)
Max. Feedwater Temperature…………………….………45℃
Max. Feedwater SDI………………….…………………..5
Free Chlorine Concentration of Feedwater………………<0.1ppm
pH Range of Feedwater during Continuous Operation…..3~10
pH Range of Feedwater during Chemical Cleaning………2~12
Max. Pressure Drop of Single Membrane Element……. 15psi (0.1Mpa)
Dimentions of Membrane Element
All dimentions are shown in: millimeter (inch).

Important information

1. Any specific application must be limited within the extreme operating conditions. We strongly recommend you to refer to the latest edition of technology manual and design guide prepared by Vontron Technology Co., Ltd., or consult experts proficient in membrane technology. In case the customer fails to follow the operating conditions as specified in this manual, Vontron technology Co., Ltd. will assume no liability for all results.
2. The permeate flow listed in the table is the average value. The permeate flow of single membrane element is within a tolerance not exceeding ±15% of the nominal value.
3. All wet-type membrane elements have been strictly tested before leaving the factory, and have been treated with the solution of 1.0% sodium hydrogen sulfite (an antifreeze solution of 10% propanediol required in winter) for storage purpose, then sealed with plastic bag in vacuum, and further packed in carton boxes. In order to prevent the breeding of microbes during short-time storage, transportation and system standby, we recommend you to soak the membrane elements with protective solution (prepared with RO filtered water) containing 1.0% sodium hydrogen sulfite (foodstuff-purpose).
4. Discard the RO-filtered water produced during the first one hour after system start-up.
5. During storage time and run time, it is strictly prohibited to dose any chemical medicament that may be harmful to membrane elements. In case of any violation in using this kind of chemical medicament, Vontron Technology Co., Ltd. assumes no liability for any outcome incurred herefrom.
LP Series of Membrane Element
Brief Introduction
The LP (low pressure) series of aromatic polyamide compound membrane element developed by Vontron Technology Co., Ltd. has the properties of low-pressure operation, high permeate flow and excellent desalination and are applicable to desalination of brackish water. Besides, it is particularly applicable to fabrication of high-purity water for electronic industry and electric power industry owing to its excellent performance in removing soluble salts, TOC, SiO2, etc.
Being suitable for desalting such water sources as surface water, underground water, tap water and municipal water, etc., LP series is mainly applicable to treatment of various industrial water such as industrial-purpose pure water, boiler water replenishment in power plant, and can be also applied to such brackish water applications as treatment of high-concentrated saline wastewater and production of beverage-purpose water.
ULP Series: Ultra-low Pressure Compound RO Membrane Element
1. ULP Series of Membrane Element
Brief Introduction
ULP series of ultra-low pressure aromatic polyamide compound membrane element newly developed by Vontron Technology Co., Ltd. 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 2 thirds of the operating pressure of regular low-pressure composite membrane, and achieves a salt rejection rate of up to 99.5%, 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 desalting treatment of those water sources with salt concentration lower than 2000 ppm, such as surface water, underground water, tap water and municipal water, etc., ULP series membrane elements are mainly applicable to numerous applications of various scales, such as pure water, boiler water replenishment, foodstuff processing, and pharmaceutical production, etc.

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