AMI Seawater Membranes
Seawater Reverse Osmosis Membrane Elements

AMI Membranes offers high rejection and high productivity seawater reverse osmosis membranes designed for marine applications. These seawater membranes are ideal for seawater desalination in shipboard applications, watermakers, land-and-sea based desalinators.


Membrane Model Permeate Flow Rate Size Minimum Salt Rejection (%) Stabilized Salt Rejection (%) Specification Sheets
Gals/Day M³/Day

M-S2514A

150

0.57

2.5" × 14"

99.2

99.4

Specifications for 2.5" Seawater RO Membranes

M-S2521A

300

1.14

2.5" × 21"

99.2

99.4

M-S2540A 700 2.65

2.5" × 40"

99.2

99.4

M-S4021A 800 3.03

4.0" × 21"

99.2

99.4

Specifications for 4" Seawater RO Membranes
M-S4040A 1950 7.38

4.0" × 40"

99.2

99.4

Note:  Performance specifications based on 32,000 mg/l sodium chloride, 800 psi (5.5 MPa) applied pressure, 77ºF (25ºC) feed water temperature, pH 8 and  the following recovery rates:   M-S2514A - 2%, M-S2521A, M-S4021A - 4%, M-S2540A, M-S4040A - 8%.  Element permeate flow may vary ± 20%.

Seawater Desalinator Reverse Osmosis Membrane

DIMENSIONS- Sea water RO Membranes

Model No.
L
Inches Cm
I
Inches Cm
D
Inches Cm

M-S2514A

14 35.6 12 30 2.4 6.1

M-S2521A

21 53.3 19 48 2.4 6.1
M-S2540A 40 101.6 38 96 2.4 6.1
M-S4021A 21 53.3 19 48 3.9 9.9
M-S4040A 40 101.6 38 96 3.9 9.9

 

RECOMMENDED OPERATION CONDITIONS for Seawater Reverse Osmosis Membranes

  • Maximum Applied Pressure
1000 psi (6.9 MPa)
  • Maximum Feed Flow Rate 
18 GPM
  • Maximum Operating Temperature
113° F (45° C)
  • Maximum Feed Water Turbidity
1 NTU
  • Maximum Feed Water SDI (15min)
5
  • Chlorine Tolerance
< 0.1 PPM
  • Feedwater pH Range, Continuous Operation
2-11
  • Feedwater pH Range, Short-Term Cleaning (30 Mins.)
1-12
  • Single Element recovery
    • M-S2514A
    • M-S2521A, M-S4021A
    • M-S2540A, M-S4040A

2 %
4 %
8%

This page was last updated 08/04/08


 

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