4040 RO Membrane

4040 Industrial RO Membrane

This world-class ultra low-pressure 4040 industrial ro membrane delivers high permeate flows and salt rejection at lower raw water pressures, compared to regular low-pressure membrane elements.  Suitable for brackish and bore water, however, a higher silt density index may require additional treatment.  It operates under approximately 2 thirds of the operating pressure of a regular low-pressure composite membrane and achieves a salt rejection rate of up to 98.0%.  The lower energy requirement decreases the equipment cost in particular pump rating and pressure rating of the membrane housing.

Active Membrane Area ft2(m2)	Average Permeate GPD(m3/d)	Stable Rejection Rate %	Min. Rejection Rate %
90 (8.4)	2400 (9.1)	99.0	98.5

 

 

 

TESTING CONDITIONS

• Testing Pressure……. 150 psi (1.03Mpa)


• Testing Solution Temperature……. 25 ℃


• The concentration of Testing Solution (NaCl)……. 1500ppm


• pH value of Testing Solution……. 7.5


• Recovery Rate of Single Element……. 15%

OPERATION LIMITS & CONDITIONS

• Max. Working Pressure……. 600psi（4.14Mpa)


• Max. Volume of Feedwater…… 16gpm（3.6 m³/h)


• Max. Temperature of Feed-water……. 45℃


• Max. Feed-water SDI₁₅……. 5


• pH Range of Feed Water during Continuous Operation……. 3～10


• pH Range of Feed Water during Chemical Cleaning……. 2～12


• Residual Chlorine Concentration of Feed Water……. ＜0.1ppm


• Max. Pressure Drop of Single Reverse Osmosis Membrane Element……. 15psi（0.1Mpa)


• Max. Pressure Drop of Single Pressure Vessel with Six RO Membranes……. 50psi（0.34Mpa）

Specification ULP11-4040

• Stable Rejection Rate: 98.0%


• Minimum Rejection Rate: 97.5%


• Average Permeated Flow: 2,800 gpd (9.1 m3/d)


• Active Membrane Area: 85 ft²


• Size: 4″ x 40 “

Operating Conditions

• Max.Working Pressure: 600 psi


• Max.Feedwater Flow: 16 GPM (3.6 m3/h)


• Max. Feedwater Temperature: 45C


• Max. Feedwater SDI: 5


• Residual chlorine Concentration of Feed Water: <0.1ppm


• pH Range of Feedwater during Continuous Operation: 3~1


• pH Range of Feedwater during Chemical Cleaning: 2~12


• Max. Pressure Drop of Single Membrane Element: 10psi( 68 kPa)

Commercial Applications

• Drinking water for restaurants


• Drinking water vending machines


• Aquarium water treatment


• Softened water for homes, hotels, commercial laundries, and car wash.


• Post-treatment of deionized water


• Pure water for pharmaceuticals, laboratories, and electronics


• Hemodialysis


• Oil/water separation


• Spot free rinse – window and solar panel cleaning


• Sterilizers and autoclaves ( additional Deionising stage may be required)