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Low Energy RO Membrane
Low Energy Reverse Osmosis Membrane
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Low-energy Reverse Osmosis Membrane Elements

The JEC series does not increase flow rate by 'squeezing' the membrane to produce more water. Instead, it achieves low-pressure, high-quality, and stable water production without reducing desalination or increasing fouling, through hydrophilic modification and precise increase of membrane area, helping you save electricity, money, and maintenance.

98%-99%
Salt Rejection
116psi (0.8Mpa)
Operating Pressure
100 (9.29)
Effective Membrane Area Ft2
Applied Industries
Low-pressure or existing system upgrades (no need to replace the high-pressure pump)
Projects with limited space requiring a reduction in the number of membrane housings
Industrial or commercial water purification systems sensitive to operating energy consumption
Situations requiring good water quality but demanding a stable long-term water production rate

Low Energy RO Membrane Designed for Stable Low-pressure Operation

The JEC Series low energy RO membrane does not artificially force higher permeate flow by compromising structural integrity. Instead, it operates efficiently at an ultra-low pressure of 116 psi (0.8 MPa) while maintaining a high 98%–99% salt rejection rate. This design philosophy enables water treatment facilities to reduce electricity consumption, lower OPEX, and simplify maintenance routine.

By achieving high water flux through dual innovations in “hydrophilic modification + maximized active area,” the JEC Series produces water output per unit comparable to standard high-pressure products but at a drastically reduced driving pressure. It serves as an ideal choice for low-pressure systems, energy-sensitive industrial facilities, and retrofit projects that require performance upgrades without replacing existing high-pressure pumps.

Why Choose JOZZON JEC Low Energy RO Membrane

1. Hydrophilic Membrane Modification

Advanced hydrophilic modification of the desalination layer improves membrane permeability, allowing the membrane to produce water effectively at a lower operating pressure.

2. High-quality Desalination Without Sacrifice

The JEC series maintains 98%-99% salt rejection, ensuring that lower operating pressure does not come at the expense of core desalination performance.

3. Low-pressure Operation at 116 psi

With a rated operating pressure of 116 psi (0.8 MPa), JEC elements reduce the pressure required for RO operation and help lower electricity consumption.

4. Optimized Membrane Area

The effective membrane area is precisely increased to improve total water production without relying solely on excessive permeate flux per unit membrane area.

5. Stable Long-term Water Production

The balanced combination of membrane hydrophilicity and effective membrane area supports stable water production while avoiding unnecessary increases in fouling risk.

6. Energy-saving System Upgrade

JEC elements are suitable for upgrading existing RO systems where reducing operating pressure and energy consumption is a priority, potentially without replacing the existing high-pressure pump.

BWRO Membrane Element for Challenging Streams

How JEC Low Energy RO Membranes Achieve Lower Energy Consumption

JEC Low Energy RO Membrane
Β 

β–Ό

β–Ό
Parallel 1Chemical Innovation

Hydrophilic Modification
↓
Improved Permeability Reduces water transport resistance through polyamide layer.
Parallel 2Structural Design

Optimized Membrane Area
↓
Increased Effective Area Maximizes active filtration zone per element volume.
Β 
Β 

β–Ό

Operating Threshold

Lower Operating Pressure

116 psi / 0.8 MPa

Β 

β–Ό

Stable Water Production + Low Energy

JEC achieves the balance between permeability and membrane area rather than simply maximizing water production per unit membrane area.

Available Models

Component Model

Effective Membrane Area ft 2 (m 2 )

Water Production Flow Rate GPD(mΒ³ / d)

Stable Desalination Rate (%)

Minimum Desalination Rate (%)

JEC-4040

100 (9.29)

2500 (9.5)

99.0

98.0

JEC-4021

48 (4.46)

1000 (3.8)

98.0

97.0

Note: The standard test conditions for membrane elements are 0.8 MPa, which is the same as the performance of ordinary low-pressure membrane elements at 1.03 MPa.

Extreme Usage Conditions

Maximum Operating Pressure 600psi (4.14 MPa)
Maximum Influent Flow Rate 16 gpm (3.6 mΒ³/h)
Maximum Inlet Water Temperature 45℃
Maximum Influent SDI15 5
Influent Free Chlorine Concentration < 0.1 ppm
Influent ph Range During Continuous Operation 2~12

ph Range of Influent During Chemical Cleaning

(Short-term 30-minute Period)

1~13
Maximum Pressure Drop of A Single Membrane Element 15psi (0.1Mpa)

Test Conditions

Test Pressure 116psi (0.8Mpa)
Test Solution Temperature 25℃
Test Solution Concentration (NaCl) 1000ppm
Test Solution ph Value 7.5
Single Membrane Element Recovery Rate 15% (4040), 8% (4021)

Membrane Element Size

The units in the diagram are millimeters (inches).

Low-energy Reverse Osmosis Membrane Elements Structure
A=1016.0mm (40″), B=99.7mm (3.9″)
C=19.1mm (0.75″), D=26.7mm (1.05″)
Low-energy Reverse Osmosis Membrane Elements Structure
A=533.4mm (21″), B=99.7mm (3.9″)
C=19.1mm (0.75″), D=26.7mm (1.05″)

FAQ

Q1: What is a Low Energy RO Membrane?
A: A Low Energy RO Membrane is designed to achieve effective water production at a lower operating pressure, helping reduce the energy required for reverse osmosis operation.
Q2: What is the operating pressure of the JEC membrane?
A: The JEC series has a rated operating pressure of 116 psi (0.8 MPa), according to the provided product specifications.
Q3: Does the JEC membrane sacrifice salt rejection to reduce energy consumption?
A: No. The JEC series is designed to maintain 98%-99% salt rejection while achieving low-pressure operation through hydrophilic membrane modification and optimized membrane area.
Q4: How does JEC achieve low-pressure operation?
A: JEC combines hydrophilic modification of the desalination layer with a precisely increased effective membrane area. This improves permeability and overall water production without relying solely on excessive flux per unit area.
Q5: Can JEC membranes be used to upgrade existing RO systems?
A: They are particularly suitable for existing system upgrades where reducing operating pressure and energy consumption is a priority. System compatibility, pump capacity, feed water conditions, and operating requirements should be evaluated before replacement.
Q6: What applications are suitable for JEC Low Energy RO Membranes?
A: JEC elements are suitable for low-pressure or retrofit RO systems, space-constrained projects, and industrial or commercial water purification applications where energy efficiency and stable long-term water production are important.

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