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
Membrane Model	Gals/Day	M³/Day	Size	Minimum Salt Rejection (%)	Stabilized Salt Rejection (%)	Specification Sheets
M-S2514A	150	0.57	2.5" × 14"	99.2	99.4
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
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

35.6

2.4

6.1

M-S2521A

53.3

2.4

6.1

M-S2540A

101.6

2.4

6.1

M-S4021A

53.3

3.9

9.9

M-S4040A

101.6

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%