Description

Vontron reverse osmosis membrane LP22-8040 ultra-low pressure aromatic poly-amide compound membrane element. Newly developed by Vontron Membrane Technology Co.Ltd. as the properties of low-pressure operation, high permeate flow and excellent desalination and is 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.

Applicable to desalination treatment of those water sources with NaCl lower than 2000 ppm, such as surface water, underground water, tap water and municipal water, ULP series membrane elements are mainly applicable to such as pure water, boiler water replenishment, foodstuff processing, and pharmaceutical production.

Being suitable for desalting such water sources as surface water (NaCl ≤10000ppm), 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 plants, and can be also applied to such brackish water applications, such as treatment of high-concentration saline waste water and production of beverage-purpose water.

Performance parameters of the membrane element:

• Active membrane area ft²(m²): 400 (37.2)
• Average permeate GPD(m³/d): 10500（39.7）
• Stable rejection rate %: 99.5%
• Min. rejection rate %: 99.3%

Testing conditions:

• Testing pressure: 225 psi (1.55Mpa)
• Testing solution temperature: 25˚C
• Concentration of testing solution (NaCl): 2000ppm
• pH value of testing solution: 7.5
• Recovery rate of single element: 15%

Operation limits & conditions:

• Max. working pressure: 600psi（4.14Mpa）
• Max. temperature of feed water: 45˚C
• Max. volume of feed water: 75gpm (17³/h)
• Max. feed water SDI₁₅: 5
• pH range of feed water during continuous operation: 2~11
• pH range of feed water during chemical cleaning: 1~13
• Residual chlorine concentration of feed water: <0.1ppm
• Max. pressure drop of single membrane element: 15psi (0.1Mpa)
• Max. pressure drop of single pressure vessel with six RO membranes: 50psi (034Mpa)